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IBM System z10 EC: LPAR Advanced Topics
Session 2247, August 24, 2009Harv Emery, IBM, Washington Systems Center Team Leader, Americas System z ATS
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SHARE 113 | System z10 EC LPAR Advanced Topics
TrademarksThe following are trademarks of the International Business Machines Corporation in the United States, other countries, or both.
The following are trademarks or registered trademarks of other companies.
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Notes: Performance is in Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here. IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply.All customer examples cited or described in this presentation are presented as illustrations of the manner in which some customers have used IBM products and the results they may have achieved. Actual environmental costs and performance characteristics will vary depending on individual customer configurations and conditions.This publication was produced in the United States. IBM may not offer the products, services or features discussed in this document in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area.All statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only.Information about non-IBM products is obtained from the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the performance, compatibility, or any other claims related to non-IBM products. Questions on the capabilities of non-IBM products should be addressed to the suppliers of those products.Prices subject to change without notice. Contact your IBM representative or Business Partner for the most current pricing in your geography.
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AgendaIBM System z10™ Update– System z10 EC New Function
• Announce review• Statements of Direction• z/VM-mode partition• CF-mode partition changes• LPAR IDs and “Partition Numbers”
Activation Profile Changes
Changing Running Partitions
Memory and Addressability– Fixed HSA
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IBM System z10™ Update
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Plan Ahead memory
Capacity Provisioning Enhancements – Capacity Tokens
Run production workload with CBU test. T & Cs apply
LPAR Dynamic PU reassignment
CPU Measurement Facility
Scheduled LPAR weight change
HMC Console Messenger
HMC and z/VM System Management
NTP Server on HMC
CFCC Level 16
STP Enhancements
InfiniBand 1x Coupling Links
High Performance FICON for System z
OSA-Express3 GbE and 1000BASE-T
Crypto TKE 5.3 Enhancements
z/VM LPAR Mode
QDIO Connection Isolation
System z10 Functions and Features (October 21, 2008)
System z10 Functions and Features (May and July, 2009)CBU Enhancements
STP Enhancements
World Wide port name (WWPN) Tool
Any z10 to any z9 – 12x InfiniBand SDR coupling
FICON Express8
Statements of Direction!
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Statements of Direction* as of August, 2009 The System z10 will be the last server to support connections to the Sysplex Timer (9037). Servers that require time synchronization, such as to support a base or Parallel Sysplex, will require Server Time Protocol (STP). STP has been available since January 2007 and is offered on the System z10, System z9, and zSeries 990 and 890 servers The System z10 will be the last server to support Dynamic ICF expansion. This is consistent with the Statement of Direction in Hardware Announcement 107-190, (RFA44930) dated April 18, 2007: "IBM intends to remove the Dynamic ICF expansion function from future System z servers." ICB-4 links to be phased out. IBM intends to not offer Integrated Cluster Bus-4 (ICB-4) links on future servers. IBM intends for System z10 to be the last server to support ICB-4 links as originally stated in Hardware Announcement 108-154, dated February 26, 2008 ESCON channels to be phased out. It is IBM's intent for ESCON channels to be phased out. System z10 EC and System z10 BC will be the last server to support greater than 240 ESCON channels IBM intends to support optional water cooling on future high-end System z servers. This cooling technology will tap into building chilled water that typically exists within the datacenter for computer room air conditioning systems. External chillers or special water conditioning will typically not be required. Water cooling technology for high-end System z servers will be designed to deliver improved energy efficiencies IBM intends to support the ability to operate from High Voltage DC power on future System z servers. This will be in addition to the wide range of AC power already supported. A direct HV DC datacenter power design can improve data center energy efficiency by removing the need for an additional DC to AC inversion step
*All statements regarding IBM's plans, directions, and intent are subject to change or withdrawal without notice. Any reliance on these Statements of General Direction is at the relying party's sole risk and will not create liability or obligation for IBM.
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Internal Coupling Facility (ICF)
1997
Integrated Facility for Linux® (IFL)
2000
System z Application Assist Processor (zAAP)
2004
Mainframe Innovation: Specialty Engines
Eligible for zIIP:DB2 remote access DB2 for BI/DWISVsIPSec encryptionz/OS XML System Servicesz/OS Global Mirror (XRC)HiperSockets for large messagesIBM GBS Scalable Architecture for Financial Reporting z/OS CIM ServerDB2 sort utilityzAAP on zIIP
Eligible for zAAP:Java execution environmentz/OS XML System Services
IBM System z Integrated Information Processor (zIIP)
2006
New! z/OS 1.11
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PR/SM™ Hypervisor™ PU Dispatching “Pools”
PU Pool – Physical PUs to dispatch to online logical PUs z10 or z9 EC with 10 CPs, 1 ICF, 2 IFLs, 1 zIIP and 3 zAAPs– CP pool contains 10 CP engines – ICF pool contains 1 ICF– IFL pool contains 2 IFLs– zAAP pool contains 3 zAAPs– zIIP pool contains 1 zIIP – z/OS LPAR can have different CP, zAAP and zIIP weights– z/VM-mode LPAR (z10 only) can have different CP, zAAP, zIIP,
IFL and ICF weights z990 with 11 CPs, 1 ICF, 2 IFLs, and 3 zAAPs– CP pool contains 11 CP engines – Specialty pool contains 6 engines – ICFs, IFLs, zAAPs– z/OS LPAR zAAP weight is set equal to the initial CP weight
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PR/SM Hipervisor PU Pool Rules
Logical PUs dispatched from supporting pool only– Logical CPs from CP pool only, for examplePool “width”– Width equals the number of physical PUs in the pool– Limits an LPAR’s maximum number of shared
logical PUs brought onlinePUs placed in pools by– Activate (POR)– Concurrent Upgrade – On/Off CoD, CBU, CIU, CUoD MES– Dedicated LPAR deactivation– Dedicated LPAR configure logical PU OFFPUs removed from pools by– Concurrent Downgrade - On/Off CoD, CBU, PU Conversion MES– Dedicated LPAR activation (“width” permitting)– Dedicated LPAR configure logical PU ON (“width” permitting)
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New LPAR type for IBM System z10: z/VM-mode– Allows z/VM V5.4 users to configure all CPU types in a System z10 LPAR
Offers added flexibility for hosting mainframe workloads– Add IFLs to an existing standard-engine z/VM LPAR to host Linux workloads– Add CPs to an existing IFL z/VM LPAR to host z/OS, z/VSE, or traditional CMS
workloads– Add zAAPs and zIIPs to host eligible z/OS specialty-engine workloads– Test integrated Linux and z/OS solutions in the same LPAR
No change to software licensing– Software continues to be licensed according to CPU type
LPAR
z/VM
LPAR
z/OS
LPAR
z/VM
LPAR
z/OS
z/OS LinuxLinux
zAAP zAAP zAAP zIIP zIIP ICF ICFCP CP CP CP CP IFL IFL IFL IFL
LinuxLinuxLinuxLinux ProductionDev/Test and Optional Failover
z/OS Production
LPAR
z/OS
LPAR
CFCC
IFL
IBM System z10
z/VM-mode LPARCFCC CMSz/OS
System z10 z/VM-mode partitions – z/VM 5.4
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System z10 Coupling Facility Processors
SoD: To be removed on System z “future”– Dynamic ICF Expansion
• Dedicated ICF and Shared CP in the same CF partition– Dynamic ICF Expansion Across ICFs
• Dedicated ICF and Shared ICF in the same CF partitionCF partition processor options– Recommended for production
• Dedicated ICFs (or dedicated CPs – Expensive!)– Not recommended (Exception: Backup or function test CF only)
• Shared ICFs or shared CPs• Dynamic ICF Expansion• Read and follow “PR/SM Planning”, SB10-7153, recommendations on
weights, Dynamic Dispatch, and capping VERY carefully to avoid performance problems, wasted resource, link checkstops, etc. “Big” ICFs on System z10 do NOT address these issues.
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System z10 Activation Profile Changes
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z990 HMC Reset Profile – General Page (OS2)
Logical Partition 'Suffix' Naming Convention
LPnameXX
where LPname is the first 6 characters of the customer required name
where xx = LPname suffix 1st character = LCSSid (0 = LCSS.0, 1 = LCSS.1)2nd character = same as MIFid of 1 to F
Logical partition is the only mode supported, basic mode is not available (HCD also provides only the LPAR mode option)
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System z10 - Reset Profile - General (CEC TSYS z10 E64)
Logical Partition 'Suffix' Naming Convention
LPnameXX
where LPname is the first 6 characters of the customer required name
where xx = LPname suffix 1st character = CSSid (0 = CSS 0 to 3 = CSS 3)2nd character = same as MIFid of 1 to F
Logical partition is the only mode supported, basic mode is not available (HCD also provides only the LPAR mode option)
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Shows customer available storage only on System z10. Fixed HSA is separate on System z10. HSA is included on System z9 and earlier.
System z10 - Reset Profile - Storage
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System z10 Reset Profile - Dynamic
Global enable/disable of Dynamic I/O REMOVED on System z10. - Dynamic I/O always enabled at POR on System z10. - Dynamic I/O can be disabled/enabled later on System z10 globally or by partition on the HMC. S/390, z900 and z800 dynamic I/O expansion setting is removed. For z990 to z9, dynamic I/O expansion requirement is supported within HCD (IODF) by the MAXDEV option when defining a subchannel set in an LCSS. This impacts HSA size.On System z10, HSA is fixed with every supported LCSS defined with 15 partitions, both subchannel sets, and maximum devices in both subchannel sets. Dynamic LPAR add/delete is supported by renaming from “*” to add, to “*” to delete.Subchannel Set 0 – Up to 65,280 subchannels (63.75k)Subchannel Set 1 – Up to 65,535 subchannels (64k - 1)HSA Subchannels = MAXDEV times number of LPARs in LCSS
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System z10 Reset Profile - Options
No functional change
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System z10 Reset Profile - CP/SAP
New on System z10 EC: POR option to convert some purchased CPs to SAPs for the duration of the POR removed. Number of CPs, SAPs, zAAPs and zIIPs is now a comment on System z10.New on z9 EC: Option to view “Fenced Book” page for Enhanced Book Availability”
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System z10 Reset Profile – Fenced Book Page
Shows purchased processors and available PUs if a 17 PU book is removed. Allows selection of processors to be available after POR with a fenced 17 PU book if all purchased processors do not fit.“LIC Processors” 75 at top: 64 + 11 SAPs + 2 spares = 77 total on E64 With 17 fenced, 59 useable plus 1 spare = 60 remaining on E64
This case: All processors remain available with a 17 PU book fenced.
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System z10 Reset Profile – Fenced Book Page
Shows purchased processors and available PUs if a 20 PU book is removed. Allows selection of processors to be available after POR with a fenced 20 PU book if all purchased processors do not fit.“LIC Processors” 75 at top: 64 + 11 SAPs + 2 spares = 77 total on E64 With 20 fenced, 57 available plus 0 spares = 57 remaining on E64 Note default removal of zIIPs, which can be changed.
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System z10 Reset Profile - Partitions
Remove partitions not to be activated automatically at POR. Change Order of activation as desired.Remember to activate Internal CFs before supported z/OS partitions.
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New on System z10: z/VM-mode partition for z/VM 5.4 supports 5 different processor types. The Logical partition 'Partition Identifier' is a 1 or 2 digit unique hexadecimal value from 0 to 3F.Recommended convention: Assign first digit to partition’s LCSS ID – 0 to 3Assign second digit to “Partition Number” – 1 to F
System z10 Image Profile - General Page (Partition TOSP1)
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System z10 Image Profile - General Page
Partition Time Offset from STP or ETR time
Time Offset Page
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System z10 Image Profile – Time Offset
Typically used with STP or the ETR set to local time when a sysplex that is required to use LOCAL=GMT needs to be set to a different time zone than the CEC. Different sysplexes can also use different offsets to operate on local time in multiple different time zones. Note: This is somewhat unusual. Setting STP or the ETR to GMT, not local time, is recommended.
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Select Capacity Group Profile Name
Example: System z10 EC ESA/390 mode partition: CPs, zAAPs, zIIPs Note: z10 EC allows Initial and Reserved to add up to 64 PUs. The operating system “sees” all those PUs (31 in this case). Don’t specify more engines than the operating system supports or engine types it doesn’t support.
System z10 Image Profile - Processor Page
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System z10 Customize Group Capacity Profile
Use “Customize/Delete Activation Profiles” task to copy the Default Group Profile, customize it and save it with the new Group name. This creates a new Capacity Group.
Operating System Support – z/OS 1.8 and above
Group Capacity in MSUs
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System z10 Image Profile - Processor Page
Example: System z10 EC z/VM-mode partition (z/VM 5.4 and later) which supports all PU types.
New October, 2008: z10 allows creation and save of an LPAR Image profile with an Initial processor definition that can’t be activated. Why? Allows creation of profiles to be used when CBU is active.
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System z10 Image Profile - Security
Global performance data = “Partition Data Report” information on other partitions I/O configuration control = Write IOCDS and HCD dynamic hardware change. Counter Facility Security Options – NEW System z10 October, 2008 Sampling Facility Security Options – NEW System z10 October, 2008
z10 CBU Measurement Facility, Session 2136, John Berg, Thursday 3:00 PM
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System z10 Image Profile - Storage
Central storage : z10 EC supports up to 1 TB Central Storage ( Initial + Reserved) maximum in an LPARCheck OS level for supported amounts.
Storage origin (Central and Expanded storage)It is recommended that you use the 'Determined by the system' option
Expanded Storage: Some OSs do not support. One example is z/OS (64-bit) running on a System z10.
Initial Storage: Brought ON at LPAR activation. Reserved Storage: Specify like reserved processors to add storage to a running partition. z/OS supports configuring storage ON and, if RSU specified, OFF. z/VM 5.4 supports configuring reserved central ON.
Recommended!
Recommended!
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System z10 Image Profile - Options
Note: Sysplex cluster name is not required for a z/OS member of a parallel sysplex it is required for a non-member partition to be managed as a workload.
Cluster N
ame
I/O Priority Range
MSUs - WLC
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System z10 Image Profile – Load “Classic”
“Load during activation” = IPL when activated Check box and provide IPL parameters (Recommended) Allow dynamic change to IPL address/parameter if wanted. Supports classic IPL or SCSI IPL (e.g. for Linux)
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System z10 Image Profile - Crypto for Crypto Express2
Note candidate list for concurrent addition of Crypto Coprocessors.
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Changing Running Partitions
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System z10 EC Change LPAR Controls – CP Tab
Enter changes, “Change Running System” or “Save to Profiles” or do both.
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System z10 Change Logical Partition I/O Priority Queuing
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System z10 Logical Processor Add
New on System z10! Change is concurrent to the running partition.Operating System Support: Concurrent change to the running OS z/OS 1.10z/VM 5.3
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System z10 Change LPAR Cryptographic Controls
New on System z10! Change is concurrent to the running partition.Operating System Supprt:z/OS ICSF: Concurrent change to the running z/OS image.
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System z10 Change I/O Priority Queuing
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System z10 Change Logical Partition Security
Counter Facility Security Options – NEW System z10 October, 2008 Sampling Facility Security Options – NEW System z10 October, 2008
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System z10 Change LPAR Group Controls
Select “Edit” to reassign LPAR Group Membership
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System z10 Change LPAR Group Controls Edit LPAR Group Membership
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System z10 Memory and Addressability
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Large Element Size Granularity
64 MB to 32 GB 64 MB>32 GB to 64 GB 128 MB>64 GB to 128 GB 256 MB>128 GB to 256 GB 512 MB
Rare to exceed today
Memory Granularity = Increment Size– Storage assignments/reconfiguration and HSA must be an even multiple– Physical increment size fixed at 64 MB– Expanded memory granularity always 64 MB– Central memory granularity is virtualized for each LP
• LP central memory increment is determined according to the size of the larger of the two central memory elements defined in the activation profile: Initial central memory or Reserved central memory
Single Storage Pool - All central storage– ES configured as needed from CS - No POR needed
Review MVS™ RSU parameter. Large z990 increment size may result in too much memory being reserved for reconfiguration after migration unless the new RSU options introduced in OS/390 2.10 are used.
System z9, z990, and z890 Memory Granularity
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Large Element Size Granularity
>256 GB to 512 GB (EC only) 1 GB>512 GB to 1 TB (EC only) 2 GB
256 MB EC or > 64 GB BC up to 128 GB 256 MB>128 GB up to 256 GB (240 GB BC) 512 MB
Memory Granularity = Increment Size– Storage assignments/reconfiguration must be an even multiple– System z10 physical increment size is fixed at
• 256 MB on z10 EC and 128 MB on z10 BC (Was 64 MB on all z9, z990, z890)
– Expanded memory granularity always 256 MB (64 MB on z9, z990, z890)– Central memory granularity is virtualized for each LP
• LP central memory increment is determined according to the size of the larger of the two central memory elements defined in the activation profile: Initial central memory or Reserved central memory
• Virtualization determined by the limit of 512 increments per CS elementSingle Storage Pool - All central storage
– ES configured as needed from CS - No POR neededReview MVS™ RSU parameter. Large System z10 increment size may result in too much memory being reserved for reconfiguration after migration unless the new RSU options introduced in OS/390 2.10 are used.
System z10 Memory Granularity
128 MB up to 64 GB (BC only) 128 MB
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storage increment sizeRSU = ---------------------------------------
CS amount to be reconfigured
In IEASYSxx. Specifies the number of central storage increments to be made available for central storage reconfiguration
– MVS attempts to keep this area free of long term fixed pages – calculated as follows for RSU = number
Or: Storage to be kept free = RSU * increment– If element size is upgraded, check the RSU parameter!
z/OS - Recommended RSU coding instead of RSU = numberto allow z/OS to calculate the number of increments
– RSU = % of storage, MBs or GBs– RSU = OFFLINE – Amount is Reserved Storage amount.
No storage is kept free of long term fixed pages except Reserved Storage that has been configured ON.
MVS RSU Parameter for System z
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System z10 SE – Base System Storage Allocation
Note: Memory only adds up to 98% because this machine is in TEST mode running an IBM internal tool that steals 32 GB of memory.
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8,192 GB
0 GB
LPAR/HSAAddressability
PartitionStorage
Addressability
CS/ESStorage
Pool
UnusedAddressability
Note: Gaps may exist due to storage reconfiguration or LPAR deactivation
Addressability for HSA is allocated top down from the highest supported address
System z10 – Highest address = 8 TB System z9/990/890 – Highest address = 1 TB
Partition Addressability is assigned below the fixed 64 GB HSA addressability when the LPAR is activated
Initial and Reserved CS are assigned contiguous CSaddressability at activation.Initial and Reserved ES (e.g. for z/VM) are assigned contiguous CS addressability at activation. This does NOT have to be contiguous with the partition’s CS addressability for CS. In addition they have contiguous ES addressability. Origin addresses are assigned top/down by default but a specific origin can be requested. Allowing default allocation is recommended in almost all cases.An addressability gap created, for example, by LPAR deactivation, can be “filled in” by a subsequent activation
Physical MemoryHSA starts at book/memory physical address 0 (in book 0)Physical memory is assigned for Initial ES and CS at LPAR activation. It is assigned to Reserved ES and CS if and when that memory is Configured ON. PR/SM is allowed to assign an LPAR any physical memory anywhere in the machine. Limit is “purchased” memory size. There is no requirement for LPAR physical memory to be contiguousEnhanced Book Availability is designed to be able to move partition memory and HSA to different book to enable removing a book from a running machine without disruption.
System z10 Central Storage Addressability
8,128 GB
64 GB (z10 EC)
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System z10 SE - Logical Partition Storage AllocationCS Addressability Math in MB:
8,388,608 Top End = 8TB- 65,536 HSA = 64 GB- 32,768 Gap = 32 GB- 16,384 TOSPF CS = 16 GB
= 8,273,920 TOSPF Origin- 4,096 TOSP1 CS = 4 GB
= 8,269,824 TOSP1 Origin
Origin = Start of LPAR’s addressability Initial = Initial CS Maximum – Initial = Reserved CS Current = Physical Memory Assigned Gap = Unused addressability above
Expanded Storage Elements (eg z/VM) Take BOTH CS Addressability below the LPAR’s CS origin address (not shown) AND separate ES Addressability (shown).
HSA is allocated 64 GB of addressability but only 16 GB (8 on z10 BC) of storage.
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zEnd