7240 Tech Manual

CMD Storage Systems

TitanTM 7240 SeriesRAID ControllerFibre Channel Arbitrated Loop

/ Ultra160 Low Voltage Differential SCSI

Technical ManualMarch 14, 2002 � Version 1.3

MAN-207240-000

Trademarks and CopyrightSilicon Image, CMD, CMD Technology, CMD Titan, CRD-7240 and CRA-7240 are trademarks of Silicon Image, Inc. All other product and companynames are trademarks or registered trademarks of other manufacturers.

© Copyright 2001 by Silicon Image, Inc. All rights reserved.

Silicon Image reserves the right to make changes to this manual and theequipment described in this manual without notice. Silicon Image hasmade all reasonable efforts to ensure that the information in this manualis accurate and complete. Silicon Image will not be liable, however, for anytechnical or editorial errors or omissions made in this manual, or for inci-dental, special, or consequential damage of whatsoever nature, resultingfrom the furnishing of this manual, or operation and performance ofequipment in connection with this manual.

Statement of License LimitationsSilicon Image, CMD Storage Systems is licensed under patents by EMCwhich contain claims directly applicable to controllers. The purchase ofthis controller product does not expressly nor impliedly license the pur-chaser to combine or use the product in combination with any otherproducts or components which combination would be covered by EMCpatent claims applicable to RAID subsystems. As used herein, controllersmeans a single or multi-processor device or group of functionally interre-lated devices operable to physically and/or logically configure a plurality ofphysical mass storage devices as one or more independently accessiblearrays, and to control the communication of data between the array(s) andhost(s) or client(s) in a predetermined RAID format or other formats. RAIDsubsystems means a storage subsystem including one or more arrays ofphysical mass storage devices, and one or more controllers associatedtherewith.

CMD Storage Systems2 7240 Series Technical Manual Rev. 1.3

1. Technical Overview 1-1Titan 7240 Series General Description 1-1

2. Physical and Operational Specifications 2-1Product Specifications 2-1Dimensions 2-1Electrical Specifications 2-1

Power Requirements 2-1SCSI Interface 2-1Fibre Channel Interface 2-1Ethernet Interface 2-1Serial Interface 2-1UPS Status Inputs 2-2

Environmental Specifications 2-2Ambient Room Temperature 2-2Relative Humidity 2-2Ventilation 2-2Airflow Direction 2-2

Agency Approvals 2-3Cache Specifications 2-4Queue Depth 2-4

3. Considerations Before Installation 3-1Storage Considerations 3-1

Disk Drive Interface Requirements 3-1Fibre Channel Considerations 3-2

Fibre Channel Type 3-2Cable Distance 3-2

Fibre Channel Configurations 3-3Fibre Channel Topologies 3-3Point-to-Point 3-3Arbitrated Loop 3-3Arbitrated Loop with a Hub 3-5

Hubs and Switches 3-5Hubs 3-5Fibre Channel Switch 3-5

Power Considerations 3-6Power Management Strategy 3-7Power Protection for the CRD-7240 3-7Power Protection with a site UPS or Series Connecting of UPS Systems 3-7Selecting a UPS 3-7

Power Terminology 3-8UPS Sizing Guidelines 3-9

3CMD Storage Systems

7240 Series Technical Manual Rev. 1.3

T a b l e o f C o n t e n t s

Connecting the UPS Status Cable to the CRD-7240 3-10APC - Smart-UPS 3-12Intellipower 3-12Liebert - PowerSure Series 3-12Liebert - UPStation GXT Series 3-13MGE - EX Series 3-13MGE - ESV+ Series 3-14

LVD SCSI Cabling Considerations 3-14LVD Bus Basics 3-15LVD Mechanical Structure 3-15EMI Control 3-17

4. CRD-7240 Installation and Integration 4-1Physical Installation 4-1

CRD-7240 Components List 4-1CMD Interoperability Program & Qualified Components List (QCL) 4-2SNMP Support (MIB Information) 4-2Unpacking your CRD-7240 4-2Installing DIMMs (Cache Memory) 4-3Installing the CRD-7240 into an enclosure 4-5

Cabling the CRD-7240 4-5Fibre Channel 4-6SCSI 4-7Serial or Ethernet 4-7Power (including UPS status connection) 4-8Cabling Order 4-8Backplane 4-9EMI Control 4-9

5. CRA-7240 Installation and Integration 5-1Physical Installation 5-1

CRA-7240 Components List 5-1CMD Interoperability Program & Qualified Components List (QCL) 5-2SNMP Support (MIB Information) 5-2Unpacking your CRD-7240 5-2Installing DIMMs (Cache Memory) 5-3Installing the CRD-7240 into an enclosure 5-5

Cabling the CRD-7240 5-5Fibre Channel 5-6SCSI 5-7Serial or Ethernet 5-7Power (including UPS status connection) 5-8Cabling Order 5-9Backplane 5-9EMI Control 5-9


6. VisionTM Storage Management Utility Software and Titan Firmware 6-1Vision Storage Management Utility Installation 6-1User�s Manual and Storage Management Utility (SMU) Manual 6-2RMS Password and Initial Settings 6-3

A. Appendix A-1Updating Firmware Using Hyperterminal A-1CRD-7240 Configuration Examples A-9

5CMD Storage Systems


Titan 7240 Series General DescriptionThe Titan 7240 Series is a high-performanceopen systems series of RAID controllers. Theyprovide high data availability and high dataintegrity by employing Redundant Array ofIndependent Disks (RAID) technology andredundant field replaceable units (FRUs). TheCRA-7240 consists of a 2U x 19� rack-mountable form factor that houses one ortwo removable 7240 RAID controllers,power supplies, fans, Fibre Channelhubs, and a control panel.The CRD-7240consists of a compact full height 5¼ diskform factor that houses one or tworemovable CRD-7240 RAID controllers,fans, and a control panel.

Both 7240 base configuration�s consists of 2 Fibre Channel ArbitratedLoop (FCAL) host channels and 4 Ultra160 LVD Wide SCSI drive chan-nels. In a single controller configuration, they provide a high performancefault-resistant solution. With dual controllers, they provide a high perform-ance fault-tolerant configuration offering hot-swappable, active-activecontroller operation, and automatic failover and AutoRebind

TM(failback).

Controller insertion and removal is simplified through a heavy-dutylever/handle assembly on the front of each controller assembly. This han-dle provides leverage to make the process nearly effortless, and securesan inserted controller in place.

In a redundant controller configuration, each controller communicates withits counterpart through a dedicated signal path included in the 7240 chas-sis frontplane. Because the controllers are hot-swappable, a failedcontroller can be replaced without powering down the RAID subsystemand interrupting operation. A simple procedure allows the user to removethe failed controller and insert a replacement controller.

While other controller manufacturers may offer hot-swappability, mostrequire a trained user to manually reconfigure the new controller to theoperational state prior to a failure. In contrast, when a replacement con-troller is inserted into either 7240, AutoRebind technology returns theredundant configuration to the setup-state it was in prior to the failure.AutoRebind restores the controller to its previous Active / Active or Active/ Passive configuration, the previous device load balancing scheme, andall other user preferences that existed prior to the event that initiated thefailover. This feature greatly simplifies the process of controller replace-

1 . T e c h n i c a l O v e r v i e w

1-1CMD Storage Systems


ment and eliminates the need for highly-trained personnel to be on call toreconfigure the subsystem should a failure occur.

Fibre Channel and SCSI interface signals, power and control signals areinterfaced through the backplane (CRA-7240 includes Fibre CHannelhubs which connect directly to the backplane). Redundant controller(failover) signals are interfaced through the frontplane. No additional cableconnections to the controller are required.

CMD Storage Systems1-2 7240 Series Technical Manual Rev. 1.3



Product Specifications

Dimensions� CRA-7240 - 11.125" deep (including front panel), 17" wide, 3.5" high� CRD-7240 - 10.78" deep (including front panel), 5.75" wide, 3.4" high� ORD-7240 - 9.5" long, 5.5" wide, 1.25" high

Electrical Specifications

Power Requirements� CRA-7240

AC voltage input - 90 to 264 VAC - auto rangingFrequency - 47 to 63 HzPower consumption - 1 Amp @ 115 VAC Max

0.5 Amp @ 240 VAC Max

� CRD-7240 +5 VDC @ 10 Amps (redundant configuration), +12VDC @ 0.4 Amps

� ORD-7240 +5 VDC @ 10 Amps (redundant configuration)

SCSI InterfaceProvides 4 LVD Ultra160 (160 MB/sec) SCSI portsUtilizes high density VHDCI (.8mm) SCSI connectorsLVD terminators integral on the backplane

Fibre Channel InterfaceProvides two 1.0625-gigabit ports per controller board

� CRD-7240 utilizes 3-pin header interface connections (PTP)

� CRA-7240 HSSDC Copper, GBIC Passive Copper, Active Copper,GBIC Shortwave Optical, Longwave Optical (GBICs are user supplied)

Ethernet Interface10Base-T/ with RJ45 connection per controller boardHalf/Full Duplex operationUser-defined IP addressUser-defined Gateway address

Serial InterfaceRS-232

2. Physical and Operational Specifications


UPS Status InputsInputs are active low CMOS inputs pulled up to +3.3V with a 10K Ohmresistor. The inputs are intended to be driven with a "dry" relay closure oropen collector driver to Signal Ground. See page 3-10 for cable wiringinstructions.

Signal Name Type Polarity Specifications

AC Loss CMOS Input 0V = AC Loss Min. Voltage = -0.4V3.3V = AC OK Max. Voltage = 4.5V

Input Current = -350mA (nominal)

Low Battery CMOS Input 0V = AC Loss Min. Voltage = -0.4V3.3V = AC OK Max. Voltage = 4.5V


Presence CMOS Input 0V = UPS Present Min. Voltage = -0.4V3.3V = No UPS Present Max. Voltage = 4.5V


Environmental Specifications

Ambient Room TemperatureOperating 0 to 40 degrees CelsiusNon-operating -40 to 60 degrees CelsiusTemperature Gradient 10 degrees Celsius/hour

Relative HumidityOperating 10% to 85% (non-condensing)Non-operating 5% to 90% (non-condensing)

VentilationEnclosure must be adequately ventilated by ensuring front and backsurfaces are not restricted.

Airflow DirectionFront to Back



Proper airflow is critical to maintaining performance. The following rulesshould always be obeyed:

� Never leave the front door panel (connected to the controllers)open longer than necessary to perform replacement of FieldReplaceable Units (FRUs).

� Always ensure the controller front door panel is closed andsecure when FRU replacement is complete. When the controllerfront door panel is open, airflow across the controller(s) is com-pletely eliminated. This will result in elevated controllertemperatures which may, over time, cause a system shutdown.

� When placing the CRD-7240 canister in the enclosure, theremust be no obstructions in the airflow path.

� Regenerative heating should be avoided when possible.Preheated air exhausted from other equipment must not bedrawn into the airflow.

Agency ApprovalsWhen the CRD-7240 is installed in a properly-shielded enclosure, it, alongwith the CRA-7240 conforms to all Class A electromagnetic interference(EMI) emission standards as regulated bythe following agencies:

� Federal Communications Commission(FCC) (USA)

� Voluntary Control Council forInterference (VCCI) (Japan)

� European Community (CE) (Europe)� Bureau of Standards, Metrology and

Inspection (BSMI) (Taiwan)

This Class A digital apparatus mets allrequirements of the CanadianInterference-Causing EquipmentRegulations.

Cet appareil numerique de la classe Arespecte toutes les exigences duReglement sur le materiel brouilluer duCanada.

Refer to chapters 3 and 4 for EMI controlinformation.

Note: The CRD-7240 front door panel must beinstalled to complete the RF shield across the frontof the CRD-7240 canister.

Warning: This equipment has been tested and foundto comply with the limits for Class A digital devicepursuant to Part 15 of the FCC Rules. These limitsare designed to provide reasonable protectionagainst harmful interference when the equipmentis operated in a commercial environment. Thisequipment generates, uses, and can radiate radiofrequency energy and, if not installed and used inaccordance withthe instruction�s manual, maycause interference to radio communications.Operation of this equipment in a residential area islikely to cause interference in which case the userwill be required to correct the interference at hisown expense.

The user is cautioned that changes and modifca-tions made to the equipment without the approvalof the manufacturer could void the user�s authorityto operate the equipment. It is suggested that theuser use only shielded and grounded cables toensure compliance with FCC Rules.

Cache Specifications72-bit ECC SDRAM DIMM

Standard Intel PC100 compatible except maximum overall module height: 1.38"Capacity: 32 - 512MBtac at CAS latency of 2: 6 nsStandard nomenclature: PC100-222-620

Queue DepthCommands supports up to 64 commands per LUNLUNs supports up to 32 LUNs




Storage Considerations

Disk Drive Interface Requirements

The 7240 Series RAID controllers support SCSI disk drives that conform to:

ANSI X3.277-1996 Information Technology - SCSI-3 Fast-40 ANSI X3T10/1142M 1998/04/13 Rev 20b SCSI Parallel Interface-2 (SPI-2)

ANSI specifications are outlined above.The SPI-2 specification for Ultra160requires the use of Low Voltage Differential(LVD) as the physical connection with pro-vision for backwards compatibility with LVDconnections running at Ultra2 SCSI rates.In addition, terminators at the ends of SCSI channels must also be LVD.The CRD-7240 does support a mixture of Ultra160 and Ultra2 devices con-nected to the SCSI channels, with the restriction that the SCSI channel willtransfer data at a rate directly related to the device type connected.

3 . C o n s i d e r a t i o n s B e f o r e I n s t a l l a t i o n

Note: For optimum performance, SCSI Ultra160requires the use of approved disk drives and diskdrive enclosures in addition to using the highestquality cables and terminators available (see page4-2).


Fibre Channel ConsiderationsSince its introduction in 1996 as a 100MB/sec disk interface protocol,Fibre Channel has rapidly grown as its aggressive advances in datathroughput speeds are the accepted basis for Storage Area Networks(SANs).

Fibre Channel TypeThe CRD-7240 connects to the Host System using Fibre Channel cableusing copper 3-pin header technology (PTP).

The CRA-7240 includes two Fibre Channel hubs to connect to the HostSystem. There are two types of Fibre Channel hubs, HSSDC and GBIC.There is also a DB-9 Interface card if so desired. GBICs are not supplied,but may be purchased as either Copper (Active or Passive with eitherHSSDC or DB-9 connectors) or Optical (Shortwave or Longwave).

The considerations as to which cable, and which connector to use shouldinclude future expansion, necessary cable distance, reliability, and cost.

Cable DistanceCertain physical requirements dictate the type of Fibre Channel cable andtechnology should be used. The length of cable between two Fibre Channelnodes is one of the most important considerations. The shorter the distance,the greater the options. While required Fibre Channel cable lengths aredefined by ANSI, the following table serves as a guideline as to the cable dis-tance and technology specified:

Cable Type Technology Maximum Cable LengthCopper 3-pin header (PTP) 13 meters (for CRD-7240)

Copper Passive Copper 13 meters(for CRA-7240) Active Copper 30 meters

HSSDC 30 meters

Optical Shortwave Optical 500 meters(for CRA-7240) Longwave Optical 10 kilometers*



Fibre Channel ConfigurationsTo properly select the correct Fibre Channel configuration for any givenapplication, factors including flexibility, accessibility and performance mustbe considered.

Fibre Channel TopologiesTopology defines how components of a network are connected. FibreChannel supports two (2) topologies which offer various benefits: Point-to-Point and Arbitrated Loop. Point-to-Point topology is a single connectionbetween two devices, with all bandwidth devoted exclusively to thosedevices. Arbitrated Loop topology offers limited connections with sharedperformance. A loop not connected to any Fibre Channel switch is calleda Private Loop, otherwise it is considered a Public Loop.

Point-to-PointPoint-to-Point is the simplest topology with two Ports (suchas a Host and RAID controller) connected. This topologyhas limited applications and has no expansion capability. Itcan serve as a high speed interface between two pointsover long distances. The communication is full duplex so a 1 gigabit/secondlink delivers 200MB/s of dedicated bandwidth. Because no additional devicesare necessary, a Point-to-Point configuration is a lower-cost solution.

Arbitrated LoopTraditional I/O channels are buses: tunnels that allowone thing through at a time. But in Arbitrated Loop topol-ogy there are two connections between any two devices:the outbound half of the loop going from the transmittingdevice to the receiving device, and the inbound half goingfrom the receiver back to the sender and completing theloop. These are actually physically separate connections,and Fibre Channel allows for separate communicationsbeing in process on each half at the same time. This capability, called fullduplex communication, can be used to make Fibre Channel more efficientthan traditional buses. A typical parallel SCSI subsystem can do about15,000 to 19,000 single sector operations per second. An FC-interfacedsubsystem using the same model drives can do 30,000 single sector oper-ations per second for the same kind of I/O's, simply by taking advantageof this full duplex feature. Vendors are now delivering products with somedegree of full duplex support.

L_Port

L_Port

L_Port

L_Port

Tx

Tx

Tx

Tx

Rx

Rx

Rx

Rx


Five fundamental aspects of FC-AL architecture give it distinct advantagesover other interface technologies:

1. Absolute device addressing. A subsystem developer can use either aworldwide unique address built into every FC device; or an absoluteaddress based on the physical location into which the drive is plugged. Inneither case does the drive address ever change during operation.Therefore, if an I/O request is queued in a peripheral, it can be executedand the results returned regardless of the status of any other device in theloop.

2. Multiple device failure support. FC-AL can tolerate any number ofdevice failures, and can support fully hot-pluggable RAID on a single loop.It would be not fault-tolerant if the loop broke, but it could provide completeprotection against loss of data, including the extra protection of a hot spareor even RAID "6" dual-level parity protection. Any number of drives canbe added during operation as easily as a single drive can be added.

3. Transmission distance. FC-AL can connect to peripherals up to 10 kmaway. This makes possible instant mirroring of on-line storage at a remotesite. This is particularly attractive to companies and organizations that arecritically dependent on their data. If the primary system should fail (suchas in an earthquake) the remote site would be immediately ready to takeover processing because the data on the remote storage is always an up-to-date copy of the data on the now-unusable primary system.

4. Non-adjacent communications. FC-AL devices are not limited only tocommunication with immediately-neighboring devices. This makes it easierto manage large, enterprise-wide configurations. With IPI-2, SMD or dualport parallel SCSI in mainframe configurations, it is common practice tohave one adapter be the primary controller for some drives and the other forthe remaining drives. FC-AL maintains and builds on this capability.

5. Parallel SCSI mechanical compatibility. FC-AL has built-in accommo-dation for hot-plugging, eliminating the power surge and arcing problemsthat plague power supply design in arrays. Particularly attractive to devel-opers of parallel SCSI is the fact the drive can plug directly onto thebackplane with no extra electronics in the drive chassis, reducing the drivehot-plugging problem to little more than a simple mechanical housing orpair of guide rails. Moreover, since Fibre Channel disk drives use a 40-pinversion of the parallel SCSI SCA blindmate connector, a subsystemdesigned for parallel SCA can be adapted to Fibre Channel with no sig-nificant mechanical changes.



Arbitrated Loop with a HubAn arbitrated loop with a hub performs in a manner simi-lar to an arbitrated loop, except that the hub provides loopresiliency if any device fails. Because Fibre Channelloops can be connected port to port, if a device fails, theloop is broken and accessibility is lost to all devices on theloop. The Fibre Channel hub overcomes this problem bycreating a star configuration similar to that which can beused with a LAN. If any of the links fail, the hub discon-nects the port and �heals� the loop to guarantee its resiliency.

Hubs and Switches Hubs and switches are used to connect elements of a storage system(hosts, controllers, disk drives and other devices) to each other in varioustopologies.

HubsA hub is a network device used to guarantee the loop resiliency of an arbi-trated loop, as shown in the above diagram. If a device fails on an arbitratedloop, the loop is broken and accessibility to all devices on the loop is lost. Ahub prevents this problem by creating a star configuration similar to thatwhich can be used with a LAN.

Hubs use Port Bypass Circuits (PBCs) to detect when different devicesare installed onto the network and then automatically assembles thesedevices into the loop. More importantly, hubs detect failures and auto-matically restructure the loop to bypass the down connection.

Fibre Channel SwitchAn Arbitrated Loop does not fit all applications due to lim-ited connections and bandwidth. A switch is a networkdevice which creates point-to-point and loop topologiesbetween individual data network elements on an "as-needed" basis.

The Fibre Channel Switch overcomes this constraintallowing point-to-point and loop topologies to be connect-ed into a Fabric. The Fabric is loosely woven connectionswhich can be configured for specific applications.

Switched Fabric

N_Port N_Port NL_Port

F_Port F_Port FL_Port

L_Port

L_Port

L_Port

L_Port

Tx

Tx

Tx

Tx

Rx

Rx

Rx

Rx

Tx

Tx

Tx

Tx

Rx

Rx

Rx

Rx

Hub


The Fibre Channel ANSI specification identifies classes of service whichcan be used to tailor the connection;

� Class 1 is a dedicated connection service� Class 2 is a guaranteed delivery service� Class 3 is a datagram service, no guaranteed delivery� Class 4 is a guaranteed bandwidth service� Class 6 is a dedicated unidirectional service

The Fibre Channel switch has two methods of operation;frame and circuit switching. The frame switching methodis used for class 2, 3 and 4 while circuit switching is usedfor class 1 and 6. The circuit switch is a physical con-nection between ports while the frame switch creates avirtual connection utilizing buffering between ports. Theswitch will support all topologies and can configure eachport for point-to-point (Fabric port or F_Port) or loopoperation (Fabric Loop port or FL_Port). This allows low

-cost loop-only devices to become part of the Fabric (Public Loop).

The Fibre Channel Switch is used for applications that require increasedbandwidth, connections and delivery service beyond loop or point-to-pointconfigurations. The switch is highly flexible and easily configured makingit the choice for enterprise-level applications.

When a node has data to transfer, it tells the switch which node it wants tosend to. The switch makes the connection to the requested destination node,and the data is transferred. This occurs totally independent of any other datatransfer activity: since each node has both transmit and receive ports, allnodes in a switch-based network can conduct data transfers at any time.

Power ConsiderationsAll Titan RAID Controllers have a unique architecture that, in the event ofa power failure, dumps the contents of its internal memory to a non-volatilehard disk. This ensures the data will be protected and available oncepower is restored.

An Uninterruptible Power Supply (UPS) is required for all 7240 Series con-trollers. The UPS keeps the system powered long enough for thecontroller to write its internal memory to a specified area of a hard disk(usually no more than 5 minutes). The UPS provides a signal to the 7240indicating line power has failed and informing the controller about the con-dition of the UPS batteries.

Another Titan architecture power management benefit is that most UPSsystems are highly reliable and have many sophisticated features likepower line monitoring, data logging, early warning alarms, etc.

Ports Supported Ports Not Supported N_Port NL_Port E_Port FL_Port F_Port L_Port



Power Management StrategyBecause the Titan architecture uses a power management strategy whichdoes not rely on failure-prone battery power sources, reliance is placed onUPS power and a designated dump partition where data can be routed inthe event of a power failure. The dump partition can be any one logicaldevice of any RAID level, or a JBOD.

Power ProtectionThe 7240 must be connected to a UPS system to prevent data loss dur-ing a power failure. The UPS status inputs provide the 7240 system withearly warnings regarding UPS conditions.

Power Protection with a site UPS or Series Connecting of UPS SystemsThe UPS inputs will not be required if the entire system is backed up on asite UPS. However, if there is any chance of failure for the site UPS, asecond local UPS will be required to protect the RAID sub-system.

If the site where any 7240 is being installed is equipped with a site-wide UPSsystem or backup generator, great care must be taken when selecting a UPSto be connected in series with the site-wide system. There are a number ofcompatibility issues that can potentially cause problems. The FacilitiesManager should be consulted before selecting a local UPS for the 7240.

UPS models are listed at the end of this section indicating which are suit-able for series connection to a site-wide system. This does not guaranteethe system will work with any site UPS. The manufacturers of both theUPS systems should be contacted for known incompatibilities, as well asthe Facilities Manager for the site.

Selecting a UPSWhen selecting an Uninterruptible Power Supply (UPS) there are many fac-tors that must be considered. Geographical and physical location is animportant factor as some areas are prone to certain types of power problems:

� Blackouts - a complete loss of power� Sags (also called brownouts) - line voltage dips below the nominal

voltage � Surges - line voltage rises above nominal voltage� Transients / Noise - distortions of the line voltage waveform

It is a good idea to understand what types of problems are most common,how often they occur, and how long they last. Some UPS systems canhandle a blackout well, but do not offer good protection from brownouts.

Some buildings have backup generators or a site UPS, but a local UPSsystem is deemed necessary due to reliability or switching issues. Thecombination of a site UPS feeding a local UPS system can be unstable. In


these cases extra care must be taken to insure the local UPS is compati-ble with the larger system.

Most good UPS systems have digital outputs to indicate that power hasfailed and alarm signals to indicate the state of the batteries. Many alsohave software included for monitoring the incoming AC Line for the aboveconditions and logging the data, shutting down computer systems grace-fully, etc.

Power TerminologyMost UPS manufacturers rate their systems in Volt Amps (VA). Some alsoinclude a rating in Watts (W). There is an important difference betweenthe two ratings.

Power Factor (FP) is defined as the ratio of active power to apparentpower. Apparent power is defined as the Root Mean Squared (RMS)value of the voltage waveform multiplied by the RMS value of the currentwaveform (expressed in VA). This is a measure of the total averagepower.

The active power is defined as the RMS value of the voltage waveformmultiplied by the RMS value of the "in-phase" component of the currentwaveform (expressed in W). This component of the power is responsiblefor producing the heat generated by electronic components.

The Power Factor gives an indication ofwhat fraction of the apparent power is dueto the active power. A purely resistive load(such as a heater or light bulb) has a

power factor of 1 (Power Factors can not be greater than 1). Electronicdevices (such as switching power supplies) do not draw sinusoidal cur-rents and usually have power factors on the order of (0.6 to 0.8).

Example 1� Power Factor = 1� A 220V @ 1 Amp resistive heater will have an apparent power of

220VA and an active power of 220W.

Example 2� Power Factor = 0.7� A switching power supply with a power factor of 0.7 and rated at

120VAC @ 4 Amps will have an apparent power of 480 VA and anactive power of 480 * 0.7 = 336 Watts.

Most UPS systems are not designed to deliver their full rated power (VA)into purely resistive loads. They are typically designed for power factorsas low as 0.6. This means that a UPS rated for 400VA could only supply240 Watts of active power.

Note: These are approximate guidelines. Please usethe disk drive and enclosure manufacturers' valuesfor more exact power estimates.



Care must be taken that the load does not exceed either of the power rat-ings, the apparent power rating (VA) or the active power rating (W). SomeUPS manufacturers do not give a specification of rated power in Watts. Ifthe rating cannot be obtained, the worse case power factor of 0.6 shouldbe used to calculate wattage rating.

Example 3� A UPS system is rated at 1000VA and no active power is specified. It

would be safe to assume that the active power rating is 600 W.

UPS Sizing GuidelinesWhen selecting a UPS system for use with any 7240, the power require-ments for the shutdown mode must be determined.

1. Determine the number of disk drive enclosures that will be connectedto the UPS. Systems utilizing a dump area may not require the entiredisk array to be connected to the UPS. If the disk array consists of mul-tiple disk enclosures, only the disk enclosure that contains the drive(s)mapped as "dump area" need to be powered by the UPS. The otherenclosures should be direct connected to utility power. If the disk arraycontains only one drive enclosure, it should be powered by the UPS.

If there are plans to increase the array size in the near future, andthose drives need to run off of the UPS, they should be included inthe power estimate so the UPS will be sized correctly to handle them.

2. Determine the power required by the drive enclosures. Most disk drivesdraw about 10 Watts under average conditions. However, 16 Wattsshould be used for sizing the UPS. This is because the new 10,000-RPM disk drives actually draw this much peak power when active, andduring an emergency shutdown, the drives will be very active.

The following are some typical numbers for the power required fromvarious components, be sure to use the manufacturer's specificationswhen possible:

Disk Drive ! 16 Watts (Be sure to use the power specified for an active drive, not the idle spec).

5" Axial Cooling Fan ! 12 Watts3½" Axial ! 6 WattsEnclosure Electronics ! 5 Watts

Equation for Total Watts(# Drives * 16W) + (# 5" Fans * 12W) + (#3.5" Fans * 6W) + (Enclosure) + (60W 7240 Series) = Total Watts


Take the sum of all the UPS powered drives, fans, enclosure powerand the 60W required by the 7240. The result is the continuouspower required by the RAID subsystem. If the host or any otherloads are connected to the same UPS, this additional power require-ment must be included.

Total the number of drives in each enclosure, then multiply the num-ber of drives by 16 Watts. Add about 12W for each 5� axial coolingfan, and use 6W for each 3.5� axial or small squirrel cage fan. Addanother 5W for any local drive enclosure displays or environmentalcontroller. Add the sum of all the UPS-powered drives, fans, andenclosure power to the 60W required by the CRD-7240.

Examplex10 Drives, x2 5" Fans, 5W Enclosure Electronics

(10 * 16W) + (2 * 12W) + (5W) + (60W) =(160W) + (24W) + (5W) + (60W) = 249 Watt Load

At this point the size of the UPS may be determined. The activepower that the UPS will need to supply has been calculated in Watts.If the UPS manufacturer only provides a Volt Amp (VA) rating, thepower calculated is converted to VA by dividing the active power(Watts) by the worse case power factor of 0.6.

Example� The required power in VA = 249 Watts / 0.6 = 415 VA Load

Example� The minimum VA rating for the UPS = 415VA * 1.25 = 519VA Rated

UPS minimum.

Current estimates place the CRD-7240 shutdown time at about 5 minutesworst case. A typical hold up time for aUPS is about 12 inutes at a 60 to 80%load. Actual UPS holdup time will varyfrom one manufacturer to another so makesure this time is a guaranteed minimumtime, not a theoretical maximum.

Connecting the UPS Status Cable to the CRD-7240The 7240 requires four signal connections for each UPS Status port. TheCRD-7240 UPS ports on the backplane are 4-pin male connectors; J8 andJ16. The CRA-7240 UPS ports on the backplane are DB-9 connectors.The qualified UPS vendors all supply simple open collector or dry contactrelays for signaling the 7240 of a change in UPS status. While other moresophisticated features may be supported by qualified UPS suppliers, there isno standardization amongst the various vendors, therefore these featuresare not supported through the 7240 UPS interface. A direct connectionbetween the UPS and host is required if it is desirable to access these addi-tional UPS capabilities.

Note: A UPS should not be operated at more than80% of its rated capacity as this will cut its run timeby more than 50%. Be conservative when deter-mining UPS requirements.



(An adapter cable is supplied to interface the CRD-7240 backplane to the DB9 bulkhead connector onthe disk enclosure.)

The type of UPS interface used on the 7240 is commonly called an "AS400" interface by many UPS ven-dors. The required UPS port signals for the CRD-7240 are:

Pin Number Signal Description

Pin 2 (CRD) AC Fail Active low connection indicating the loss of AC input power to the UPS. Pin 2 (CRA DB-9)

This signal is a 3.3V CMOS input with a 10K pull-up resistor to 3.3Volts. This signal will beshorted to ground by the UPS when the input AC power to the UPS is removed.

Pin 4 (CRD) Presence Active low connection indicating the presence of a UPS. This signal is a 3.3V CMOS input withPin 3 (CRA DB-9) a 10K pull up resistor to 3.3 Volts. This signal will be shorted to ground by the UPS when the

cable is connected to the UPS. It is not recommended to use a shield or AC ground for this sig-nal as the UPS may not connect these signals to DC ground internally. The presence signalmay be connected to any normally closed side of one of the other signal relays to make a con-nection to ground. (This is because presence is assumed true because of the redundantconnection created by any other UPS alarm condition).

Pin 3 (CRD) Signal Ground This is the signal ground between the UPS and the CRD-7040.Pin 4 (CRA-DB-9)

Pin 1 (CRD) 2 Min. Warning Active low signal used to indicate the UPS batteries are almost exhausted. This signal is aPin 5 (CRA DB-9) 3.3V CMOS input with a 10K pull-up resistor to 3.3 Volts. This signal will be shorted to ground

by the UPS when the backup battery has about two minutes of power left.

Pins 5-9 No connection

P1 UPS Cable Mating Connector, 9-pin(DB9 - Male)

UPS CableCRD-7240

Intra-EnclosureUPS Cable

CRD-7240 UPS Cable Diagram

4-Pin DB9M DB9F UPS Conn.

P2 UPS Backplane, 4-pin(Amp 102241-2 (4-pin polarized housing))

AC_Fail Input

Presence Input

Ground

Enclosure

CRD-7240

UPS

Low Batt Input(2 min. Alarm)

4

3

1 5

3

2 2

4

CRD-7240 INTRA-ENCLOSURECABLE ONLY


Cabling Instructions for Various UPS Systems for7240 Series Controllers

The following diagrams detail the connec-tions for the cable from the enclosurebackplane to each specific UPS.

APC - Smart-UPS Model numbers: SU700RMNET, SU1000RMNET, SU1400RMNET,SU2200RM3U, SU3000RMSU.

APC units must be equipped with theoptional Smartslot relay I/O module,AP9610.

Intellipower*** Suitable for series connection ***Model numbers: IQ-650, IQ-800, IQ-1100, IQ-1500

7000 Series UPS Interface,9-pin DB9 (female)

AC_Fail Input

AC_Fail COM

Low Batt COM

AC_Fail N.O.

Low Batt N.O.

Presence Input

Ground

Ground

Ground

Low Batt Input

UPS Connector,DB25 (male)

2

3

4

5

1

24

23

2

15

14


AC_Fail Input

AC_Fail COM

Low Batt COM

AC_Fail N.O.

Low Batt N.O.

Presence Input

Ground

Ground

Ground

Low Batt Input


2

3

4

5

7

4

2

6

15

14

Note: Systems capable of series connection are soindicated. Pins that are not shown are not con-nected (open).

Caution: When using an APC UPS, the UPS Self-Test must be disabled.



Liebert - PowerSure Series*** Suitable for series connection ***

Model numbers: PS700RM-120, PS1000RM-120, PS1400RM-120, PS2200RM-120

Liebert Systems must be equipped with the Intellislot AS400 Card option.

Liebert - UPStation GXT Series*** Suitable for series connection ***

Model numbers: GXT700, GXT1000, GXT1500, GXT2000, GXT3000

Liebert Systems must be equipped with the Intellislot AS400 Card option.


AC_Fail Input

Low Battery Common

Other Common

AC_Fail N.O.

Low Batt N.O.

Presence Input

Ground

Summary Alarm N.C.

Signal Ground

Low Batt Input


2

3

4

5

16

6

7

9

17

11


AC_Fail Input

Low Battery Common

Other Common

AC_Fail N.O.

Low Batt N.O.

Presence Input

Ground

Summary Alarm N.C.

Signal Ground

Low Batt Input


2

3

4

5

16

6

7

9

17

11


MGE - EX Series

Model numbers: EX10, EX15, EX20, EX30.

MGE Systems must be equipped with the 8902AS Relay Interface Cardoption.

MGE - ESV+ Series

Model numbers: ESV8+, ESV11+, ESV14+, ESV22+.

MGE Systems must be equipped with the 8902AS Relay Interface Cardoption.


AC_Fail Input AC_Fail N.O.

Low Batt N.O.

Presence Input

Ground

AC Fail N.C.

Ground (COM)

Low Batt Input


2

3

4

5

9

4

5

7


AC_Fail Input AC_Fail N.O.

Low Batt N.O.

Presence Input

Ground

AC Fail N.C.

Ground (COM)

Low Batt Input


2

3

4

5

9

4

5

7



LVD SCSI Cabling ConsiderationsLVD Bus BasicsThe Low Voltage Differential (LVD) SCSI interface takes advantage of thebenefits of differential signaling without the high power requirements ofHigh Voltage Differential (HVD) signaling. A differential interface offershigher noise margins, common mode noise rejection, reduced EMI, andsupports longer cables.

The lower signal voltages and higher transfer rates used for the LVDinterface require careful design of backplanes and cables to maintainsignal integrity. The following is a description of the factors that affectcable quality and signal integrity.

In general, when the delay of a signal along the signal path approachesthe rise and fall times of the signal, it must be treated as a transmissionline. With typical cable delays of 1.5nS per foot and rise times as fast as1nS, LVD SCSI certainly meets these requirements. Any of the followingissues can render the interface inoperable:

� Impedance discontinuities� Excess stub length� Improper nodal spacing� Excess capacitive loading at stubs

LVD Mechanical StructureThe LVD bus has additional requirements that prevent the use of equip-ment designed for use in the single ended environment. This is especiallytrue of drive enclosures, where some may include all the differential sig-nals but not keep the pairs properly referenced to each other formaintaining differential impedance. Differential impedance is dependenton coupling between the SIG(+) and SIG(-) wires or traces. Because ofthis, the geometry of the wires or PCB traces is critical.

On Printed Circuit Boards in backplanes, peripherals, etc., the impedancemust be controlled by precise spacing between the wires in a differentialpair, the spacing between the pairs and the distance from the groundplane. Routing the SIG(+) and SIG(-) on opposite sides of a plane layereffectively eliminates any coupling between the conductors and will resultin a large impedance mismatch.

In cables the physical position of one wire relative to the other effects theimpedance. The manufacturer of the wire must maintain the relationshipbetween the two wires of a differential pair and the relationship of the dif-ferential pairs to the shield, while keeping the differential pairs fromcoupling to each other.

ConnectorsSince all connectors used for SCSI appear as impedance discontinuitiesthe only hope of improving their performance is to reduce the size or num-ber of them on the bus. To reduce the quantity of connectors avoidsplitting the bus among multiple (split bus backplane) enclosures. Checkthe enclosure manufacturer for segmented backplanes or other connectorintensive solutions. While cable loops between the drive bays improve thenode spacing issue, they tend to have many more connectors on the bus.To reduce the physical size of the connector, the .8mm VHDCI connectorstandard can be used as a smaller, less distorting interface.

WireThe most important factor in a quality SCSI cable is the wire itself. Consistentimpedance is the best indicator of quality. After testing many different sam-ples of LVD cable, one can easily see the difference between a low and highquality cable based on impedance variation. To meet the demands of LVDSCSI it is recommended that only cable suppliers listed below be used.

Recommended Cable Types and ConnectorsTesting done by Silicon Image, CMD Storage Systems indicates that cablesmanufactured by Madison Cable Corporation and C&M, and connectorsmanufactured by Honda, are significantly better than the other vendors test-ed. Madison�s UniversalTM SCSI Cable series of products meet therequirements for LVD as well as Single-ended and HVD configurations.

While other vendors may list the same AWM style number or UL StyleNumber, they are not necessarily the same quality. Other cable supplierswill be qualified as they become available.

The following are some sample part numbers:

Cable with solid conductors are more fragile and should only be used inapplications where the cables will not be subject to excessive mechanicalstress.


Sample Madison Part Numbers

P/N 68KBK00045 Madison - 34 pair 30AWG Stranded Universal SCSI Cable - AWM Style 20276

P/N 68KBK00046 Madison - 34 pair 30AWG Solid Universal SCSI Cable - AWM Style 20276

P/N 68KBK00048 Madison - 34 pair 28AWG Solid Universal SCSI Cable - UL Type CL2 / FT4

P/N 68KBK00049 Madison - 34 pair 28AWG Stranded Universal SCSI Cable - UL Type CL2 / FT4

P/N 57317 C&M SCSI 160 Cable

EMI Control for CRD-7240 The serial and UPS connections within an enclosure housing the CRD-7240 are relatively static and may use unshielded cables internally.However, at a minimum, external connections should use a shielded bulk-head connector and shielded external cables.

Use care when routing any unshielded internal cables so they are not bun-dled with, placed in contact with, or routed parallel with any high-speedcable. This is especially important in the case of the unshielded PTP con-nectors used for intra-cabinet Fibre Channel connections. These type ofFibre Channel cables must be routed away from, and shielded from, anyand all other interfaces that leave the enclosure (such as but not limitedto: serial and UPS cables). Be sure to size your internal Fibre Channelconnections correctly, as loops of extra Fibre Channel wire will easily cou-ple into the surrounding cables and excessive EMI will conduct andradiate from these other external cables.



This page left blank intentionally.




This chapter refers to the CRD-7240 only. For CRA-7240 Installation andIntegration, see Chapter 5.

Physical Installation

CRD-7240 Components ListThe standard CRD-7240 includes the following already installed:

1 - CRD-7240 Chassis canister with either black or beige front door panel (including 2 fans)

1 - or 2 - (depending on configuration) Controller Boards (including Fibre Channel Daughter Boards)

1 - Frontplane (on dual controller configuration only)

Included but not installed:1 - Accessory Kit which includes:

8 - #6-32 x 3/16� (pan head, Phillips) Mounting Screws1 - CD-ROM with SMU application and PDF files of the User�s

Manual and SMU Manual3 - Serial cables for communication (2 intra-enclosure, 1 external)1 - UPS Status Cable (intra-enclosure)

Not included but necessary (must be customer supplied):Cache memory (DIMMs)SCSI Terminators (LVD)SCSI CablesFibre Channel CablesPower CablesUPS Cables (external, customized for chosen UPS)Ethernet Cables (if applicable for communications)

For information regarding necessary components that are not included,see CMD Interoperability Program & Qualified Components List(QCL) on following page.

4. CRD-7240 Instal lat ion and Integrat ion


CMD Interoperability Program & Qualified Components List (QCL)Silicon Image, CMD Storage Systems has always qualified different com-ponents ensuring compatibility. With the introduction of the Titan family ofRAID controllers, the scope of the qualification program significantlyexpanded. Components on the Qualified Components List (QCL) nowinclude, but are not limited to:

� Ultra160 LVD SCSI disk drives� Ultra160 LVD SCSI disk drive enclosures and their SAF-TE and SES

reporting modules� Dual In-line Memory Modules (DIMM)� Uninterruptible Power Supplies (UPS)� Fibre Channel-to-PCI host bus adapters� Fibre Channel-to-Sbus host bus adapters� Fibre Channel hubs� Fibre Channel switches

Silicon Image, CMD Storage Systems Development Engineering andDesign Assurance personnel have established functional testing criteriaand formal test plans for each component tested. Test plans are continu-ally refined using field experience and feedback ensuring the testing beingperformed provides the best possible interoperability.

The QCL is posted on the Partner Access portion of the CMD web site(www.cmd.com).

SNMP Support (MIB Information)CMD provides a fully compliant MIB for use with SNMP. The MIB can bedownloaded from each Titan Controller product page inside the PartnersAccess portion of the CMD website, www.cmd.com.

Unpacking your CRD-7240 Unpack the CRD-7240 with care. Keep all packing materials in case theyare needed at a later time.

1. Open box top.2. Carefully remove CRD-7240 from box.3. Remove foam end caps.4. Remove Accessory Kit (cables, screws, etc.) and CD-ROM (in jewel

case) from box.



Installing DIMMs (Cache Memory)The CRD-7240 is not shipped with mem-ory factory installed. The cache on theCRD-7240 controller board uses one ortwo standard DIMMs, allowing for up to 1 gigabyte of read/write memo-ry (0.5 gigabyte when mirrored).

In a single controller configuration, you may install one DIMM or two asnecessary, but the inside slot (J9) must be populated first.

In a dual-controller configuration, Mirrored Caching is enabled. Thisrequires equal amounts of memory to be installed in both Cache 0 (J9)and Cache 1 (J10) on each board. Additionally, for the controller boards tobind successfully, both boards must have the same amount of memoryinstalled.

DIMM Installation1. Open and remove front door panel by gently pulling down the front

panel latch lever located to the right of the System Status indicators.This unlocks the front door panel from the canister allowing the frontdoor panel to be opened. Then disengage the hinge tabs on the leftside of the front door panel from the slots in the CRD-7240 canister.Finally, remove the front door panel.

2. Remove frontplane (if dual controller configuration).

3. Gently pull handle forward and down. This will disengage the con-troller board from the backplane connectors. DO NOT FORCE. Letthe handle do the work.

4. Slowly pull the controller board out of the CRD-7240 canister.

HingeTabs andSlots

CAUTION: DIMM modules can be destroyed by elec-trostatic discharge (ESD). Observe all anti-ESDshop practices before touching a DIMM module.


5. After removing the controller board from the CRD-7240, make surethat the ears on the DIMM slots are in the open position.

6. Insert DIMM module into slot for Cache 0 (J9). Pushing the DIMMmodule all the way into the slot automatically closes the ears.

7. Insert the same amount of DIMM into slot for Cache 1. (This ismandatory for dual controller configuration, but is optional for a singlecontroller.)

8. Slide controller board completely into canister until handle engages.

9. Gently push handle up and back. This will engage the backplane con-nectors and lock the controller board into place. The handle shouldsmoothly lock into place with no excessive force required. If excessiveforce appears necessary, pull controller board back two inches andthen slide it back in.

10.If this is a dual controller configuration, repeat steps 3 through 9 for thesecond controller board.

11.If this is a dual controller configuration, install the frontplane by slidingthe guideposts into the guides and pushing frontplane until engaged.

12.Replace the front door panel by first placing the hinge tabs on the leftside of the front door panel into their respective slots in the CRD-7240 canister. Swing the front door panel into place until the latchtab on the front panel latch lever locks the door in position. Make sure

that the latch is completely flush with thefront panel side. This will engage thefront panel circuit board connectors totheir connections on the ControllerBoard(s) and the cooling fans shouldstart running. DO NOT FORCE.

Ear Open

Ear Closed

Caution: When CLOSING the front doorpanel, DO NOT hold the front panellatch in the open position.

J9(Cache

J10(Cache



Installing the CRD-7240 into an enclosure.The CRD-7240 installs into any standard tower orrackmount enclosure, occupying one full-height drivebay (3.4� H x 5.75� W) in either a horizontal or verticalorientation. The following drawing denotes the loca-tions of the holes for the eight mounting screws.

Tools RequiredInstallation of the CRD-7240 into an enclosure requires the 8 suppliedmounting screws, a small Phillips head screwdriver, and a grounding wriststrap.

1. Remove enclosure covers in accordance with enclosure manufacturerinstructions.

2. If necessary, install bulkhead connector for �CRD-7240 Intra-Enclosure UPS Cable� (see page 3-11).

3. Slide CRD-7240 into selected enclosure drive bay.

4. Use a Phillips head screwdriver toinstall eight #6-32 x 3/16� mountingscrews.

Caution: Screws driven into the CRD-7240 sides shallbe no longer than 3/16�. Longer screws can makeit impossible to remove FRUs, or may damage thecircuitry inside the CRD-7240.

.82

2.06

9.78

3.40

3.13

.86

1.67

6-32 MOUNTING HOLES8 PLACES

3.12 AVERAGE SERVICE LOOP6-32 MOUNTING HOLES

8 PLACES (4 EACH SIDE) Mounting Holes(4 each side)


Cabling the CRD-7240With the CRD-7240 installed into any stan-dard tower or rackmount enclosure, somecabling will be contained strictly inside theenclosure, such as the Power Input. Somecabling may be contained within the enclo-sure or may also be cabled to the enclosurebulkhead, such as a SCSI cable. Whileother cabling will need to be attached at theenclosure wall through the use of a shieldedbulkhead connection, such as FibreChannel.

The CRD-7240 requires the following cables to operate properly:

Fibre ChannelEvery CRD-7240 controller includes a Fibre Channel daughter board.Each daughter board supplies two Fibre Channel ports, 0 and 1. The con-nectors for each Fibre Channel port are located on the backplane andcomprised of both a transmission (Tx or Out) and a reception (Rx or In).Refer to the backplane diagram for Fibre Channel port layout.

A Fibre Channel cable will need to have two 3-pin header connectors(PTP) on one end, and will combine the receive and transmit signals intoone DB-9 connector on the other end to be mounted to the enclosurebulkhead.

PowerInput

EthernetLAN0

EthernetLAN1

SerialPort 0

SerialPort 1

UPSStatusInput

PowerInput

SCSICH3

SCSI CH2

SCSI CH2

SCSI CH4

SCSI CH5 Fibre Channel C0 & C1

Caution: It is recommended to use sufficient strainrelief for all cables. Excess stress on cables maydamage the cables, connectors, and/or back-plane causing an unreliable connection andpossible loss of data and loss of access to data.Strain relief also protects against damage thatoccurs from unintentional pulling on, or trippingover, cables. Please contact your rack manufac-turer for cable strain relief accessories.



The Fibre Channel 3-pin header connectors Transmit (Tx) and Receive(Rx) designations on the controller backplane are with respect to the CRD-7240. The cable, on the other hand, may be labeled with respect to eitherthe controller OR the device end.

It is critical for the proper operation of theCRD-7240 to understand how the cablewas labeled, either with respect to con-troller or the device end.

For example, if the cable were labeled with respect to the device end, thenthe cable labeled Transmit will connect to the controller backplane con-nector labeled Receive (Rx). But if the cable were labeled with respect tothe controller, then the cable labeled Transmit will connect to the controllerbackplane labeled Transmit (Tx).

SCSIThe CRD-7240 has four SCSI channels at ports 2, 3, 4 and 5 (see back-plane diagram). Each channel can accommodate up to 14 SCSI drives.Each SCSI bus must be terminated with an LVD terminator on the end ofthe bus away from the CRD-7240. The CRD-7240 has an internal termi-nator on the backplane (see page 3-1).

Although technology continues to improve, length of cable (especiallySCSI) should always be considered. It is always best to use as short acable as possible. In any case, the maximum cable length is 12 meters.

EthernetPorts

SerialPorts

RxC0-CH0

RxC1-CH0

RxC1-CH1

TxC0-CH1

Tx

Tx

Tx

Rx

PowerInputs

UPSStatusInputs

CH4 CH2

CH2

CH3

CH5

= Pin #1

Caution: Fibre Channel cables need to be carefullysized. Do not use excessively long Fibre Channelcable as the extra cable in the enclosure will injectEMI causing noise in the other interfaces.


Because each SCSI channel supports up to 14 SCSI drives, the cablingmay or may not be completely intra-enclosure, depending on the needs ofthe end user and the capacity of the enclosure. A SCSI bus may includecabling to the enclosure bulkhead to allow additional drives to be used.

Serial or EthernetThe RMS workstation communicates to the CRD-7240 through either two(for redundancy purposes) Serial Comm or Ethernet ports. The intra-

enclosure serial cables used from thebackplane to the bulkhead are included,along with one serial cable for use fromthe bulkhead to the workstation.

For Ethernet, use typical Ethernet cables with RJ45 �telephone-type� jacks.If the workstation has only one available Ethernet connection, then it maybe necessary to use an Ethernet hub to connect the two Ethernet cablesfrom the controller to a single Ethernet cable to the workstation.

Power (including UPS status connection)The CRD-7240 provides connectors for two separate power supplies.Each power supply should be connected to an Uninterruptible PowerSupply (UPS). Also necessary, is a UPS Status cable to be connectedfrom the controller backplane to the enclosure bulkhead, and then fromthe bulkhead to the UPS.

The UPS keeps the system powered long enough for the controller to writeits internal memory to a designated dump partition (this is usually no morethan 5 minutes). The UPS provides a signal to the CRD-7240 that indi-cates that line power has failed and also informs the controller about thecondition of the UPS batteries.

An intra-enclosure status cable is provided with the CRD-7240, along withthe necessary information for both another intra-enclosure cable to bemade along with necessary cables from the bulkhead to the UPS (seepages 3-6 through 3-14).

Note: When dressing the cables inside the enclosure,keep the Serial or Ethernet cables apart from theFibre Channel cables as much as possible.



Cabling Order Because the initial cabling should be completed before turning on anypower to the CRD-7240 or any component, there is no set pattern as toorder of cabling.

BackplaneWith the exception of failover communications between the two controllersin a dual-controller configuration, all power and control signals are inter-faced through the backplane.

EMI Control The front panel display provides an EMI curtain for the front of the con-troller assembly. This front shield is provided by the front panel displayPCB to the outer enclosure through connections between the copper fin-gers around the perimeter of the display. The fan door on the inside of thefront panel display has a conductive gasket attached to the PCB to com-plete the shield behind the cooling fans.

As with any high-speed multi-bus controller, the potential for driving noiseinto the chassis and out on the interface cables is very real. To avoid prob-lems, use good shielding techniques on the entire enclosure. Manyinstallations might shield the controller adequately, but fail to close the 6"slots between drive bays in the same enclosure. All cables leaving theenclosure must be attached to bulkhead connectors mounted to the enclo-sure wall. These bulkhead connectors must tie to the cable shields for


both the internal and external cables for all Fibre Channel and SCSIbusses.

This page left blank intentionally.

This chapter refers to the CRA-7240 only. For CRD-7240 Installation andIntegration, see Chapter 4.

Physical Installation

CRA-7240 Components ListThe standard CRA-7240 includes the following already installed:

1 - CRA-7240 enclosure with either black or beige controller front door panel (including 2 fans)

1 or 2 - (depending on configuration) Controller Boards (including Fibre Channel Daughter Boards)

1 - Frontplane (on dual controller configuration only)2 - Power Supplies2 - Fibre Channel Hubs or DB-9 Interface boards

Included but not installed:Accessory Kit which includes:4 - #10-32x6.33mm (pan head, Phillips) Bracket Screws4 - #10-24x12.7mm (pan head, Phillips) Rail Mounting Screws1 - CD-ROM with SMU application and PDF files of the User�s

Manual and SMU Manual1 - Serial cable for communication 2 - Cable clamps

Not included but necessary (must be customer supplied):Cache memory (DIMMs)Fibre Channel GBICs (if applicable)SCSI Terminators (LVD)SCSI CablesFibre Channel CablesPower CablesUPS Cables (external, customized for chosen UPS)Ethernet Cables (if applicable for communications)

For information regarding necessary components that are not included,see CMD Interoperability Program & Qualified Components List(QCL) on following page.



5. CRA-7240 Instal lat ion and Integrat ion

CMD Interoperability Program & Qualified Components List (QCL)Silicon Image, CMD Storage Systems has always qualified different com-ponents insuring their compatibility. With the introduction of the Titanfamily of RAID controllers, the scope of the qualification program has beensignificantly expanded. Components on the Qualified Components List(QCL) now include, but are not limited to:

� Ultra160 LVD SCSI disk drives� Ultra160 LVD SCSI disk drive enclosures and their SAF-TE and SES

reporting modules� Dual In-line Memory Modules (DIMM)� Uninterruptible Power Supplies (UPS)� Fibre Channel-to-PCI host bus adapters� Fibre Channel-to-Sbus host bus adapters� Fibre Channel hubs� Fibre Channel switches

Silicon Image, CMD Storage Systems Development Engineering andDesign Assurance personnel have established functional testing criteriaand formal test plans for each component. Test plans are continuallyrefined using field experience and feedback ensuring the testing beingperformed provides the best possible interoperability.

The QCL is posted on the Partner Access portion of the CMD web site(www.cmd.com).

SNMP Support (MIB Information)Silicon Image, CMD Storage Systems provides a fully compliant MIB foruse with SNMP. The MIB can be downloaded from each Titan Controllerproduct page inside the Partners Access portion of the CMD website,www.cmd.com.

Unpacking your CRA-7240 Unpack the CRD-7240 with care. Keep all packing materials in case theyare needed at a later time.

1. Open box top.2. Carefully remove CRA-7240 from box.3. Remove foam end caps.4. Remove Accessory Kit (cables, screws, etc.) and CD-ROM (in jewel

case) from box.


Installing DIMMs (Cache Memory)The CRA-7240 is not shipped with mem-ory factory installed. The cache on theCRA-7240 controller board uses one ortwo standard DIMMs, allowing for up to 1 gigabyte of read/write memo-ry (0.5 gigabyte when mirrored).

In a single controller configuration, you may install one DIMM or two asnecessary, but the inside slot (J9) must be populated first.

In a dual-controller configuration, Mirrored Caching is enabled. Thisrequires equal amounts of memory to be installed in both Cache 0 (J9)and Cache 1 (J10) on each board. Additionally, for the controller boards tobind successfully, both boards must have the same amount of memoryinstalled.

DIMM Installation1. Open and remove controller front panel by gently

pulling down the front panel latch lever located to theright of the System Status indicators. This unlocks thefront door panel from the canister allowing the frontdoor panel to be opened. Then disengage the hingetabs on the left side of the front door panel from theslots in the CRA-7240 removing the controller frontdoor panel.

2. Remove frontplane (if dual controller configuration) bypulling straight out.

3. Gently pull handle forward and down. This will disengage the con-troller board from the backplane connectors. DO NOT FORCE. Letthe handle do the work.

4. Slowly pull the controller board out of the CRA-7240 enclosure.



CAUTION: DIMM modules can be destroyed by elec-trostatic discharge (ESD). Observe all anti-ESDshop practices before touching a DIMM module.

Lever

Frontplane

5. After removing the controller board from the CRA-7240, make surethat the ears on the DIMM slots are in the open position.

6. Insert DIMM module into slot for Cache 0 (J9). Pushing the DIMMmodule all the way into the slot automatically closes the ears.

7. Insert the same amount of DIMM into slot for Cache 1. (This ismandatory for dual controller configuration, but is optional for a singlecontroller.)

8. Slide controller board completely into canister until handle engages.

9. Gently push handle up and back. This will engage the backplane con-nectors and lock the controller board into place. The handle shouldsmoothly lock into place with no excessive force required. If excessiveforce appears necessary, pull controller board back two inches andthen slide it back in.

10.If this is a dual controller configuration, repeat steps 3 through 9 for thesecond controller board.

11.If this is a dual controller configuration, install the frontplane by slidingthe guideposts into the guides and pushing frontplane until engaged.

12.Replace the controller front door panel by placing the hinge tabs onthe left side of the front door panel into their respective slots. Swingthe front door panel into place until the latch tab locks the door inposition. Make sure that the latch is completely flush with the front

panel side. This will engage the frontpanel circuit board connectors to theirconnections on the Controller Board(s)and the cooling fans should start running.DO NOT FORCE.


Ear Open

Ear Closed

Caution: When CLOSING the front doorpanel, DO NOT hold the front panellatch in the open position.

J9(Cache

J10(Cache

Installing the CRA-7240 into a RackThe CRA-7240 installs into any standard rack. First, attach the suppliedbrackets to each side of the the CRA-7240, then mount the CRA-7240 tothe front rails of the rack.

Tools RequiredInstallation of the CRA-7240 into a rack requires the 2 suplpied brackets, 4supplied bracket screws, 4 supplied rail scerws, a small Phillips head screw-driver, and a grounding wrist strap.

1. Attach brackets to CRA-7240 using 4 10-32x6.33mm supplied screws.

2. Attach CRA-7240 to rails using 4 10-24x12.7mm supplied screws.Use all 4 screws as the CRA-7240 was designed to only need frontmounting.

Cabling the CRA-7240Power and Fibre Channel cabling for the CRA-7240 is connectedthrough the front of the unit and can be routed to the back if desired.To open the enclosure front door, press the lock button loctaed nearthe center of the unit. The door is spring loaded and should openautomatically. If desired, both the Power Cables and Fibre ChannelCables may be routed directly out the front with the door left open (orpermanently removed).

Power CablesThe CRA-7240 comes with 2 power cablesflexible enough to be easily routed belowthe handle of the bottom power supply,through Cable Clamp #1, and out the backof the unit.

Fibre ChannelThe CRA-7240 comes with two hub boards (either GBICCopper, GBIC Optical or HSSDC), or 2 DB-9 HostInterface cards, depending on which configuration waspurchased.

If a GBIC version of the hub board waspurchased, the GBICs will have to beinstalled. This is done by simply slidingthe GBIC into the opening until a con-nection is made.

Fibre Channel cables should be routedthrough Cable Clamp #2, and out theback of the unit.



Unit Front

Lock button

Cable Clamp #2

Cable Clamp #1

10-32x6.33mmscrews

Note: Cable clamps do not ship installed and may beplaced where ever the user desires. The followingposition is recommended.

SCSIThe CRA-7240 has four SCSI channels at ports 2, 3, 4 and 5. Each chan-nel can accommodate up to 14 SCSI drives. Each SCSI bus must beterminated with an LVD terminator on the end of the bus away from theCRA-7240. The CRA-7240 has an internal terminator on the backplane.

Although technology continues to improve, length of cable (especiallySCSI) should always be considered. It is always best to use as short acable as possible. In any case, the maximum cable length is 12 meters.

Serial or EthernetThe VisionTM Storage Management Utility (SMU) workstation communi-cates to the CRA-7240 through two (for redundancy purposes) SerialComm or Ethernet ports.

For Ethernet, use typical Ethernet cables with RJ45 �telephone-type� jacks.If the workstation has only one available Ethernet connection, then it maybe necessary to use an Ethernet hub to connect the two Ethernet cablesfrom the controller to a single Ethernet cable to the workstation.

Power (including UPS status connection)The CRA-7240 provides connectors for two separate power supplies.Each power supply should be connected to an Uninterruptible PowerSupply (UPS). Also necessary, is a UPS Status cable.

The UPS keeps the system powered long enough for the controller to writeits internal memory to a designated dump partition (this is usually no morethan 5 minutes). The UPS provides a signal to the CRA-7240 that indi-cates that line power has failed and also informs the controller about thecondition of the UPS batteries.


CH. 5 CH. 3

CH. 4

LAN 0 SER 0SER 1

UPS 0UPS 1

LAN 1CH. 2

The UPS cable from the backplane to the UPS must be specially made(see pages 3-6 through 3-14).

Cabling Order Because the initial cabling should be completed before turning on anypower to the CRA-7240 or any component, there is no set pattern as toorder of cabling.

EMI Control The controller front display panel provides an EMI curtain for the front ofthe controller assembly. This front shield is provided by the front paneldisplay PCB to the enclosure through connections between the copper fin-gers around the perimeter of the display. The fan door on the inside of thefront panel display has a conductive gasket attached to the PCB to com-plete the shield behind the cooling fans.

The backplane is enclosed in an EMI shield as well.

The metal front door in front of the power supplies and Fibre Channel hubsmay be removed without impeding EMI performance.



VisionTM Storage Management Utility (SMU) InstallationIncluded with the Titan RAID Controller is the VisionTM StorageManagement Utility (SMU) supplied on a CD-ROM shipped in the acces-sory box. SMU may be installed on any the following platforms:

� Microsoft Windows 95, 98, 2000, or NT 4.0� Sun Solaris 2.7 or higher� RedHat Linux 6.2 or higher� HP-UX v11.0 or higher� AIX 4.3.3 or higher

The platform must have the following Java Runtime Environment (JRE)installed:

� JRE v1.3.0 or higher

Please refer to the specific operating system manufacturer for more infor-mation on how to obtain the JRE for your platform.

The CD-ROM contains the following folders and files:

� Install - Installation executables for all platforms� Manuals - Product Manuals (including SMU)� Readme.htm - HTML readme file

The readme file outlines the install procedure in detail for each platform.

User�s Manual and VisionTM Storage Management Utility (SMU) ManualIncluded on the CD-ROM are PDF versions of both the User�s Manual andthe Vision Storage Management Utility (SMU) Manual. To access bothmanuals, and print out hard copies of each, Adobe Acrobat Reader mustfirst be downloaded and installed. To download a FREE copy of AdobeAcrobat Reader, visit the Adobe World Wide Website located at:

http://www.adobe.com/prodindex/acrobat/readstep.html



VisionTM

Vision

TM

Storage Management Utility (SM

U)

Installation Disk including Manuals

CMD Storage Systems

6. VisionTM Storage Management Utility (SMU)and Titan Firmware

SMU Password and Initial SettingsSMU�s functionality is password protected. There are three levels of secu-rity, Basic or No Password Needed, User (plus Remote User), and Vendor.

The Basic level allows for �read only� functionality, and the ability to down-load and print out Event Logs. There is no password needed for the Basiclevel. This is the default level upon RMS boot up.

The User level is considered an administrator level and allows access tothe normal functionality of RMS including the user to create, delete, con-figure RAID Sets, set email alerts, etc. The default password for the UserLevel is: Titan.

The Remote User level provides the same access as the User level,except it allows for someone from an offsite location to perform necessaryadministrative functions. The default password for the Remote User levelis: CMDRTS.

The Vendor level is to be used only by the original storage solution sup-plier. The default password for the Vendor Level is: Vendor.

The default passwords are only listed in this manual and do not appear inthe User's Manual or SMU Manual.


A-1CMD Storage Systems


Updating Firmware Using Hyperterminal

It is strongly recommended that updating firmware be performed usingRMS and the System !! Update Firmware feature. However, in caseswhere during the upgrade a power loss occurred causing a corruption ofthe CMD Titan RAID controller firmware, or where a corrupted file wasuploaded to the controller, it may be necessary to perform this procedure.If so, here is a step-by-step procedure for upgrading CMD Titan RAID con-troller's firmware using the serial port connection and the HyperTerminalinterface.

1. Ensure that your Desktop/Laptop PC is properly connected to theCMD Titan RAID Controller you wish to upgrade. There are two seri-al connections on the rear of the CMD Titan RAID controllers. One ofthe connections is for controller A and one of the connections is forcontroller B. The serial connections on the CMD Titan RAIDControllers require a NULL modem cable to function properly.

2. Properly power down the controller you are upgrading. With RMSselect System !! Shutdown

3. Bring up HyperTerminal on your Desktop/Laptop PC and configure forthe proper communications port "Connect using: Direct to COM1 orDirect to COM2 ". Set the configuration to 9600, 8, None, 1 andXon/XOff. See the pictures below.

A . A P P E N D I X

CMD Storage SystemsA-2 7240 Series Technical Manual Rev. 1.3

4. Restart the controller you wish to upgrade, by powering the controlleroff then back on.

5. When the controller restarts the following lines will appear on thescreen. As soon as text appears, hit <Ctrl-C> three or four times toprevent booting into the firmware code. This will stop the controller atthe Boot> prompt.

%Boot-I-Init, Initializing CRA-7280

%Boot-I-Post, Testing...A01234B012345CD012345EF012345GHIJKL

If you performed the <Ctrl-C> functions properly, the following outputshould be displayed.

%Boot-I-Init, Initializing CRA-7280

%Boot-I-Post, Testing... A01234B012345CD012345EF012345GHIJKL%Boot-I-Startup, Loader Rev 1.5.0, Copyright (c) 1999 CMDTechnology Inc.%Boot-I-LoadSkipped, Stopping in Bootloader: ^C entered.

Boot>

If the <Ctrl-C> function was not performed properly, the controller willnot enter the Boot Utility. If this happens repeat steps 3-5.

6. At the "Boot>" prompt, enter the following line followed by the<enter> key. The following command will run the FMU (FLASHManagement Utility).

Boot> SET:IMG{IMAGE=3}



7. At the "Enter option:" prompt, select option "1" (Download and pro-gram FLASH image) followed by the <Enter> key. The followingscreen will appear.

8. At this point select the baud rate to be used during the uploading ofcode to the CMD Titan RAID controller. In this example, select "1"(115200) followed by the <Enter> key. The following line "Changebaud rate. Type any key to continue." will appear. See picture below.

9. Before typing any key to continue, it is necessary to change theHyperTerminal baud rate to match the selection made in step #9above. At the top of the HyperTerminal window, select File !!Properties. In the "Properties" window, select "Configure�". In the"COM2 Properties" window, change the baud rate to "115200".Select "OK" in the "COM2 Properties" window and then select "OK"in the "Properties" window. You must now disconnect and re-connectto the communications port. Select Call !! Disconnect and then Call!! Call and enter the name that was entered when HyperTerminal wasfirst started. See pictures below.

10. Now that the baud rate at the CMD Titan Controller and theHyperTerminal match, hit any key to continue. The following line"Ready to download image - enter ^C to ABORT" will appear on thescreen. See picture below.


11. In order to start the transfer, the file must be selected. At the top of theHyperTerminal window, select Transfer !! Send Text File. This willopen a "Send Text File" window, which will allow you to locate the fileto be uploaded. In the box next to the phrase "Look in:" , select thedirectory where the firmware code is located. In the box next to thephrase "Files of type:", select "All files (*.*)". The Titan Firmware willhave an extension of ".rec". When the file has been selected, click on"Open" to start the transfer. See picture below.

The following three characters will alternate on your screen to indicatethat the transfer is in progress. ( / - \). When the transfer is complete,the following lines will appear to indicate a successful transfer. Seepicture below.



12. Before typing any key to continue, repeat step # 10, and change theHyperTerminal baud rate back to 9600 (make sure the disconnect andre-connect is performed). When done changing the HyperTerminalbaud rate back to 9600, hit any key to continue. The screen will dis-play the "Current layout of FLASH" and prompt with the followingquestion:

Enter starting FLASH sector number to be programmed(^C to erase sectors):

Since we are updating the Firmware version 2.0.4, in the sectors col-umn of the display, it shows that firmware uses sectors 4-20. Answerthe above question with "4" and hit the <enter> key. The followinglines will appear:

Overwrite image: Firmware version: 2.0.4with image: Firmware version: 2.00.4 ? (y/n):

Respond to the above question with "y". When you hit the <enter>key, the FLASH will erase and load the new code. When the FLASHis done updating, it will prompt you to "Type any key to return tomenu". See picture below.


13. After hitting any key and returning to the menu, at the "Enter option:"prompt, select "4" (Restart controller). The following question willappear:

Are you sure you want to restart the CRA-7280 (y/n):

Answer "y" to this question and hit the <enter> key.





CRD-7240 Configuration Examples

OverviewThis section will illustrate several cabling configurations using variousFibre Channel topologies. Because of the flexibility of the CRD-7240 andthe variety of Fibre Channel topologies, it is not practical to show all of theconfigurations possible for this product. Diagrammed are some of themost common configurations possible.

For storage system resiliency, it is advisable to implement a hub betweenthe host computer(s) and the CRD-7240, with one hub for each loop.Should a controller fail and require a hot-replacement, the loop will remainintact if a hub is used. Without a hub, removal of a controller will break theloop.

Host

FibreChannel

HBA

TR

FCAL FCAL

BackplaneR TTT

10

FibreChannel

HBA

CRD-7240 Active Controller

Enclosure w/bulkhead connectors

Ultra160 Ultra160 Ultra160 Ultra160

Up to 56 Ultra160SCSI disk drives

Host

FibreChannel

HBA

Fibre Channel Hub

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus


CRD-7240 Active Controller CRD-7240 Active Controller

Ultra160 Ultra160 Ultra160 Ultra160 Ultra160 Ultra160 Ultra160 Ultra160

Host

FibreChannel

HBA

Fibre Channel Hub Fibre Channel Hub

FibreChannel

HBA

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus





HostHost

FibreChannel

HBA


FibreChannel

HBA

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus




HostHost

F Fi ib br re eC Ch ha an nn ne el l

H HB BA A



H HB BA A

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus





Configuration Example 1

The following is a non-redundant CRD-7240 configuration example of asingle host with a single FCAL HBA connected to one of the CRD-7240'sFibre Channel loop ports. In this point-to-point configuration, should con-troller, HBA or Fibre Channel cable fail, data access to the host is lost.Optionally, denoted by dotted lines, a second FCAL HBA may be added toconnect to the second FCAL loop port on the CRD-7240. In this optionalconfiguration, if an HBA or Fibre Channel cable fail, data access can con-tinue over the surviving loop. As with all dual HBA-per-host configurations,the host software must be capable of supporting multiple connections tothe same controller for this topology to be viable.

Host

FibreChannel

HBA

TR

FCAL FCAL

BackplaneR TTT

10

FibreChannel

HBA

CRD-7240 Active Controller


Ultra160 Ultra160 Ultra160 Ultra160





The following is an example of a single host with a single FCAL HBA con-nected to a CRD-7240 dual redundant configuration. It is the simplestexample of a single loop Fibre Channel topology. In this configuration,should an HBA or Fibre Channel cable fail, data access is lost. With thisconfiguration, no special host software capabilities are needed for the con-trollers to perform a failover of resources should a failure occur.

Host

FibreChannel

HBA

Fibre Channel Hub

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus






The following is an example of a single host with dual FCAL HBAs con-nected to a CRD-7240 dual redundant configuration. It is the simplestexample of a dual loop Fibre Channel topology. In this configuration,should an HBA or Fibre Channel cable fail, data access can continue overthe surviving loop. As with all dual HBA-per-host configurations, the hostsoftware must be capable of supporting multiple connections to the samecontroller for this topology to be viable.

Host

FibreChannel

HBA


FibreChannel

HBA

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus








The following is a dual redundant CRD-7240 configuration example of adual hosts with single FCAL HBAs in each host connected to separateCRD-7240 Fibre Channel loops. In this configuration, a host could behomogeneous or heterogeneous and each host would be mapped to sep-arate redundancy groups unless the operating system(s) were fullyclusterable and running lock managers. In this configuration, should anHBA or Fibre Channel cable fail, data access to the one host is lost butcan continue on the other host.

HostHost

FibreChannel

HBA


FibreChannel

HBA

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus






The following is a dual redundant CRD-7240 configuration example ofdual hosts with dual FCAL HBAs in each host connected to separateCRD-7240 Fibre Channel loops. In this configuration, if an HBA or FibreChannel cable fails, data access can continue over the surviving loop. Aswith all dual HBA-per-host configurations, the host software must be capa-ble of supporting multiple connections to the same controller for thistopology to be viable.

HostHost


H HB BA A



H HB BA A

TTTR

FCAL FCAL FCAL FCAL

BackplaneRRR TTT

0 110

Failover Bus






Fibre Channel Interface Boards

Fibre Channel Interface-GBIC (SBA-007002-000)

InterfaceThe GBIC Fibre Channel Interface board accepts a Giga-Bit Interface Converter (GBIC) in accordancewith reference 1.3.1-3. The GBIC provides the physical interface to the Fibre Channel allowing connec-tion to copper, multi-mode optic, or single mode optic channels without modification to the basiccontroller. Connectivity is provided as shown in the figure.

BypassActive bypass circuitry is included on the board to allow removal(electrical or physical) of a nonfunctionalCoyote Controller board while maintaining loop integrity. Control of the bypass is such that either con-troller board can independently force a bypass on any connection. In addition, controller ports arebypassed when the controller is reset or not present.

Hot Plug CapabilityThe Fibre Channel Interface board may be installed/removed without disrupting system operation onother ports.

A

COYOTECONTROLLER

0

COYOTECONTROLLER

1

BACKPLANE

FIBRE CHANNEL I/F 0

FIBRE CHANNEL I/F 1

LOOP 0CABLE

LOOP 1CABLE

B

BYPASS

BYPASS

Port0

Port1

Port1

Port0

A

B

GBIC

GBIC

BYPASS

GBIC

GBIC

TITAN

TITAN

Fibre Channel Interface-Copper (SBA-007002-002)

InterfaceThe Copper Fibre Channel Interface board provides the physical interface to the Fibre Channel allowingdirect connection to a copper channel. Connectivity is provided as shown in Figure 6- 2. Two physicalconnections to the loop are provided, allowing daisy chain connections to multiple controllers and hostswithout an external hub. The interface supports inter-enclosure signaling levels. Physical connection ismade via Fibre Channel style 2 (HSSDC) connectors.

BypassActive bypass circuitry is included on the board to allow removal(electrical or physical) of a nonfunctionalCoyote Controller board while maintaining loop integrity. Control of the bypass is such that either con-troller board can independently force a bypass on any connection. In addition, controller ports arebypassed when the controller is reset or not present. The active bypass circuitry also automaticallybypasses input ports upon detection of loss of valid input signal.



A

COYOTECONTROLLER

0

COYOTECONTROLLER

1

BACKPLANE

FIBRE CHANNEL I/F 0

FIBRE CHANNEL I/F 1

LOOP 0CABLE

LOOP 1CABLE

B

BYPASS

BYPASS

Port0

Port1

Port1

Port0

A

B

TITAN

TITAN

Fibre Channel Interface Boards

Fibre Channel DB9-PASS THRU Interface Board (SBA-007002-001)

InterfaceThe DB9-PASS THRU Fibre Channel Interface board provides the physical interface to the FibreChannel allowing direct connection to a copper channel. Connectivity is provided as shown Figure 6-3.Two independent physical connections are provided.

The interface supports inter-enclosure signaling levels.

Physical connection is made via Fibre Channel style 1 (DB9) connector.




A

COYOTECONTROLLER

0

COYOTECONTROLLER

1

BACKPLANE FIBRE CHANNEL I/F 1

B

Port0

Port1

Port1

Port0

A

B

FIBRE CHANNEL I/F 0

TITAN

TITAN

7240 Tech Manual

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