Iasp Enablement
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Transcript of Iasp Enablement
IBM STG Lab Services
Enabling Applications for Independent Disk Pools
commonly know as IASPs
®
© IBM Corporation 2009
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Objectives
At the end of this session you should:
Understand Independent Auxiliary Storage Pool (IASP) concepts and value
Gain a perspective on customer usage scenarios for IASPs– High Availability solutions– Server Consolidation– Workload Isolation
Understand, at a high level, what application and work management changes are needed to exploit IASP technology
Identify other considerations related to common uses of IASPs
Learn what’s new for IASPs in IBM i 6.1
Know where to go for more information and detailed assistance
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
1. Introduction to HA (HA Strategies & Planning for 2012 part 1 of 3) - Techtalk
2. Introduction to IBM HA and DR Technologies (HA Strategies & Planning for 2012 part 2 of 3) – Recorded (in Techdocs)
3. IBM Power HA Strategy – Techtalk (Feb 19)
4. Technology Positioning (HA Strategies & Planning for 2012 part 3 of 3) – Techtalk (Feb24)
5. IBM CBU Enhancements – Techtalk ( Feb 25th)
1. IASP Enablement - Techtalk (Feb 26th)
2. iCluster Enhancements – Techtalk (March 3rd)
3. Sizing PowerHA - Techtalk (March 12th)
4. Geographical Mirroring for Native IBM i applications - Recorded
5. Geographical Mirroring for Hosted and VIOS environments - Recorded
6. DS6000/DS8000 Copy Services HA Sizing and Considerations - Techtalk (March 19th(
* * * * * * * * This page for IBM and Business Partners Only * * * * * * * *
Techtalks: SmartZone for Power System Technical Training:oIBM: http://lt.be.ibm.com/smartzone/powertechoPartner: http://www.ibm.com/services/weblectures/smartzone/powertech
Look for email from “STG Sales Education & Events Newsletter” for Techtalk dates
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Recap of Part 1 and Part 2
IBM offers a growing number of single system and multi-system availability solutions, including software, OS and storage based technologies
Assess your use of single server availability options
All sizes of businesses should assess their business resiliency requirements
– Use methodologies such as Business Impact Analysis (BIA) to better understand exposures and what should be done about them
IBM i and Power Systems offer 6 fundament technologies for business resiliency (native attached storage)1. Logical Replication software2. Switched IASP - Independent Auxiliary Storage Pool 3. IBM i Geographical Mirroring via OS4. IBM System Storage LUN Level Switching 5. IBM System Storage Copy Services – simple copy 6. IBM System Storage Copy Services with IBM i
Some HA and DR technologies are unique to the IBM i Virtual Environments
– Understand how application HA / DR requirements interact with design efforts for a virtualized solution environment
IBM i 6.1 in conjunction with PowerHA offers dramatic HA/DR enhancements
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Geographic Mirroring
• IBM i storage mgmt page level replication
• Synchronous
• Any internal or external storage
Cross Site Mirroring (XSM)“HA Switchable Resources” - option 41 – IBM
i
Provides choices in design, implementation and management of IBM i 6.1 and SAN Storage IASP Cluster based replication technologies for HA and DR
* This new support and capability added to IBM i and XSM with PowerHA and 6.1, IBM SAN Only
PowerHA for i (5761-HAS)a.k.a HASM
Metro Mirror (SAN)*
• SAN hardware replication
• Synchronous
• IBM SAN storage only
Global Mirror (SAN)*
• SAN hardware replication
• Asynchronous
• IBM SAN storage only
FlashCopy (SAN)*
• SAN hardware replication
• Point in time
• IBM SAN storage only
IBM i 6.1 PowerHA
See www.redbooks.ibm.com: Implementing PowerHA for IBM i - SG24-7405-00 (Nov 2008)
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASPs (Independent Auxiliary Storage Pools)
IASPs - a building block of IBM i availability
Required for:► IBM PowerHA for IBM i (i 6.1)
- Geographic Mirroring - Advanced Copy Services for DS6000, DS8000
• FlashCopy, Metro Mirror and Global Mirror► IASP Data Encryption (i 6.1) ► Switched Disk ► IBM System Storage Copy Services Toolkit
IASP - an enabler for some server consolidations
IASP feasibility studies available
Enabling Applications for IASPs is usually easier than you think
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
User ASP isolates disk for specific purposes
System ASP
User ASP
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
User ASP evolved into two types: Basic ASP and Independent ASP
System ASP
Independent ASP
Basic ASP
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Independent ASP requires explicit “vary on”
System ASP
Independent ASP
System AVary On
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Switchable IASP lets you switch disk between two systems
System ASP
Independent ASP
System A System B
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
System A is the primary server
System ASP
Independent ASP
System A System B
Vary On
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
A switch first requires a vary off of System A
System ASP
Independent ASP
System A System B
Vary Off
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Then System B can vary on the IASP
System ASP
Independent ASP
System A System B
Vary Off Vary On
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Admin Domains help you manage system objects
System ASP
Independent ASP
System A System B
Vary Off Vary On
System ValuesUsername & password
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Cross site mirroring provides additional redundancy
IASPSystem A
IASPSystem
C
System B
Second IASP is
mirrored copy of first
active but not varied on
Second site can become the primary
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
An Independent ASP is a method of configuring multiple disk storage units into one group. The group can be …
Non-switchable
Any or all units in the system tower, except the load source Any one or more disks anywhere on the system
Switchable
All disk units in a tower other than the system tower All the units in one tower A subset of the disk units in a tower Multiple IASPs in a tower Disk units from two or more I/O towers
Note: All contents of tower are switched.
Hardware replicated• Geographic/Cross site mirroring (XSM) V5R3, i 5.4• IBM System Storage Copy Services (FlashCopy, Metro Mirror,
Global Mirror) i5.4, i 6.1 • PowerHA for i (i 6.1)
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IBM i Storage Layout
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
The IASP will be created on ITCHA4C. Expand its entry under "My Connections", then expand "Configuration and Service" and "Hardware."
System i Navigator: Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Expand "Disk Units." Sign on with a Service Tools profile authorized to work with disk units.
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Click on "Disk Pools." Only the System ASP is present. Right-click on "Disk Pools", and select "New Disk Pool."
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
The New Disk Pool wizard starts. Click "Next."
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
To create a disk pool that can contain both library and IFS objects, select "Primary" for "Type of disk pool." Enter an arbitrary name for the disk pool, leaving "Database" as "Generated by the system". This will generate a database of the same name.
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
The new disk pool is selected. Click "Next."
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Click "Add Disks..." to add from the list of eligible disk units.
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Click on the disk units to be added to the new disk pool (Ctrl-click for multiple disk units, Shift-click for a block of units.)
Creating a Disk Pool
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
*SYSBASi5/OSLicensed ProgramsWork Mgt & User Definitions
Contains Common Application Code
MYCPY1IASPs
Database EUROPE:
CatalogCollections,
Libraries
MYCPY2
Database ASIA:CatalogCollections,
Libraries
MYCPY3
Database US:CatalogCollections,
Libraries
User profiles / Job Descriptions
Multiple Database Support – Setup Example
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Definition
Libraries per IASP DB:
DBGLAPARDBOEDBPRODDBMISC...
Code Libraries in SYSBAS:
PGMGLAPARPGMOEPGMPRODPGMMISC...
System Value QUSRLIBL:
PGMGLAPARPGMOEPGMPRODPGMMISC...
User Profile
Initial Program
Job Description
Job Description, per IASP user(s):
INLASPGRPINLLIBL
Initial Program:Identifies DB libraries to be worked with, uses SETASPGRP
IASP #1 IASP #2 IASP #3
Multiple Database Support – Setup Details
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
LibrariesQSYSQSYS2QHLPSYSQUSRSYSQGPLQTEMPChuckLaural SelwynFred
*SYSBAS
LibrariesBarbaraMaliMariaSuzanna
LibrariesBarbaraMaliMariaSuzanna
ORANGE
APPLEName Space
An ASP group consists of a primary IASP and zero or more secondary IASPs linked to it, referenced by the name of the primary.
Only one ASP group can be associated with a thread (job) at one time, so in this example, a thread could have a name space of:
ƒ *SYSBAS onlyƒ *SYSBAS + APPLEƒ *SYSBAS + ORANGE
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Additional Characteristics of IASPs
Each ASP Group is represented as a separate DB2 database instance.
Duplicate library names are allowed within different ASP groups on the same system.
Each job or thread always has visibility to objects in ASPs 1-32 (System ASP + all Basic User ASPs), but is “attached” to, at most, one ASP group at a time.
Can be replicated or switched between multiple systems (requires additional software)
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IFS Directory Structure
/ (root)
QSYS.LIB QIBM APPLEn ( etc.)
locales ProdData UserData ( etc. )
mqm Access CA400 ( etc. )
Path to mqm = ‘/QIBM/UserData/mqm’
XML
GUIPlugin HTTPA
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IFS Objects in IASPs
IFS objects are accessed in an IASP by specifying the IASP directory name first in the path.
/ (root)
QSYS.LIB QIBM APPLEn ( etc.)
QIBM QSYS.LIB ( etc. )
Path to QIBM in APPLEn = ‘/APPLEn/QIBM’
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Supported Objects Types as of i 6.1
*ALRTBL *DTAQ *JRNRCV *PAGDFN *SPLF
*BLKSF *FCT *LIB *PAGSEG *SQLPKG
*BNDDIR *FIFO *LOCALE *PDG *SQLUDT
*CHRSF *FILE *MEDDFN *PGM *SRVPGM
*CHTFMT *FNTRSC *MENU *PNLGRP *STMF
*CLD *FNTTBL *MGTCOL *NODGRP *SVRSTG
*CLS *FORMDF *MODULE *PSFCFG *SYMLNK
*CMD *FTR *MSGF *QMFORM *TBL
*CRQD *GSS *MSGQ *QMQRY *USRIDX
*CSI *IGCDCT *NODGRP *QRYDFN *USRQ
*DIR *JOBD *NODL *SBSD *USRSPC
*DTAARA *JOBQ *OUTQ *SCHIDX *VLDL
*DTADCT *JRN *OVL *SPADCT *WSCST
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Unsupported Object Types as of i 6.1
*AUTHLR *DDIR *IMGCLG *NWSD
*AUTL *DEVD *IPXD *PRDAVL
*CFGL *DOC *JOBSCD *PRDDFN
*CNNL *DSTMF *LIND *PRDLOD
*COSD *EDTD *MODD *SOCKET
*CRG *EXITRG *M36 SSND
*CSPMAP *FLR *M36CFG *S36
*CSPTBL *IGCSRT *NTBD *RCT
*CTLD *IGCTBL *NWID *USRPRF
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Objects that can be Monitored with Admin Domain
Classes (*CLS)
Ethernet line descriptions (*ETHLIN)
Independent disk pools device descriptions (*ASPDEV)
Job descriptions (*JOBD)
Network attributes (*NETA)
Network server configuration for connection security (*NWSCFG)
Network server configuration for remote systems (*NWSCFG)
Network server configurations for service processors (*NWSCFG)
Network server descriptions for iSCSI connections (*NWSD)
Network server descriptions for integrated network servers (*NWSD)
Network server storage spaces (*NWSSTG)
Network server host adapter device descriptions (*NWSHDEV)
Optical device descriptions (*OPTDEV)
Subsystem descriptions (*SBSD)
System environment variables (*ENVVAR)
System values (*SYSVAL)
Tape device descriptions (*TAPDEV)
Token-ring line descriptions (*TRNLIN)TCP/IP attributes (*TCPA)
User profiles (*USRPRF
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Operations Navigator - IFS
Example: DSPLIB *ALL *ALLAVL
Display Libraries Libraries: *ALL ASP Opt Library Type Device _ DBLIB PROD DLB1 _ JIMCDLB1 PROD DLB1 _ QRCL00033 PROD DLB1 _ QRCY00033 PROD DLB1 _ QRPL00033 PROD DLB1 _ QSYS00033 PROD DLB1 _ QSYS200033 PROD DLB1 _ SYSIB00033 PROD DLB1 _ #LIBRARY PROD _ #RPGLIB PROD
IBM i commands have ASP parameter
CRTLIB LIB(JIMCDLB1) ASP(*ASPDEV) ASPDEV(DLB1)
WRKLIB/DSPLIB LIB(*ALL) ASPDEV(*ALLAVL , ASPname, *SYSBAS, *ASPGRP, ........)
SAVLIB, RSTLIB, ...
IASP Library Management
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IFS Objects in IASPs
IFS objects can be placed in an IASP using the rst (Restore Object) command, usually from a save file.
Restore Object (RST) Type choices, press Enter. Device . . . . . . . ‘/QSYS.LIB/QGPL.LIB/SAVF2.FILE’
Objects: Name . . . . . . . ‘ < path on save media > ‘ Include or omit . *INCLUDE New object name . ‘/APPLEn/ < path in IASP > ‘
Restore Object (RST) Type choices, press Enter. Device . . . . . . . ‘/QSYS.LIB/QGPL.LIB/SAVF2.FILE’
Objects: Name . . . . . . . ‘ < path on save media > ‘ Include or omit . *INCLUDE New object name . ‘/APPLEn/ < path in IASP > ‘
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Customer Usage Scenarios
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Why use IASPs?
Single System Environment – isolate and consolidate– Multiple Applications– Multiple versions of same application– Server consolidation– Data archive
Multiple System Environment– Fundamental building block of hardware and OS-based High
Availability and Disaster Recovery solutions– Off-line backups from replicated copy– Replicated copies for testing or development
Common (general)– Isolation of data associated with specific applications– Increased granularity of management scope
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Building Blocks: IBM i IASPs
IASP – Application -1
IASP – Application -2
IASP – JournalingReduce archive costswith lower cost storage in IASP
ASP1 (SYSBAS)
User ASP
* IBM sometimes refers to IASPs as Independent ‘Disk Pools’
Independent ASPs (IASPs) *–Uptime
► Shorter IPL – leave non-critical IASPs offline till after IPL
► RCLSTG by asp–Archive
► Storage performance and cost by IASP–Consolidation
► Consolidate with IASPs- Meet compliance needs for isolation- Reduce software licensing fees- Reduce number of OS upgrades
–Clusters► Building block for HA/DR
storage replication based clustering
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Can be any server that supports V5R3
Isolate low-use data - bring online only when needed
Reduce system start time Manage save/restore by IASP Reclaim storage by IASP Divide data between multiple
databases Isolate data
Isolate affects of disk failures
Application maintenance does not affect entire system
IASPs in a Single System Environment
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Isolating applications / Multiple versionsof application
*SYSBASMfg Data
Appl P Data
Archive Data
Appl Z V1 Appl Z V2 Appl Q Data
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
DS6000
DS8000IBM External System Storage Copy Software
FlashCopy
For backups and snapshots
Poin
t In
Tim
e Co
py
Metro Mirror (synchronous)
For local availability
Peer
To
Peer
Rem
ote
Copy
(con
tinuo
us c
opy)
SAN = Storage Area Network
Global Mirror (asynchronous)
For DR
Consistency Group
Building Blocks: IBM System Storage Copy Services
Additional copies for remote backup, queries, etc.
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Considerations for Migrating to an IASP-Based HA Solution
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
In addition to single-system benefits….
Facilitates hardware or OS-based replication solutions for HA, DR and off-line backups.
The only level of granularity available for IBM i switched disk and Geographic Mirroring HA solutions
The only level of granularity available besides full-system replication on hardware-based external storage replication solutions for i Remove risk of damaged
system objects associated with replicating entire system
Faster switchover/failover times
Eliminate manual reconfiguration necessary for switchover/failover
IASPs in a High Availability Environment
Replication
Or
Switched
Disk
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP HA Solution Considerations IBM’s HA solutions and technologies for i are continuing to
center around IASPs.
HA system/partition is available while in the “Contingency” role.– Is a unique system, not a complete replica of the source system– Unique instance of i operating system, LPPs, PTFs, etc– System is available, but IASPs replicated or shared from a
“primary” system are NOT available unless switching or failing to contingency system.
If using OS or Hardware Based replication of IASP, processes will need to be in place for synchronizing necessary SYSBAS objects and settings
May need changes to processes such as change management, user and security management, system monitoring, etc.
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
How do you get there?
Common Changes and Application Considerations for IASPs
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Typical IASP Migration Project Outline Determine how IASPs fit into your HA/DR/Server Consolidation/Off-line backup
strategy.
Perform initial proof-of-concept on subset of applications.
Educate administration and programming staff on IASP enablement considerations.
Set up test environment where application and work management changes for IASP enablement will be performed and tested.
Devise plan for synchronizing SYSBAS between primary and secondary systems, if applicable.
Test all process, application and work management changes.
Determine production migration strategy based on available hardware and replication options.
Test migration process on sandbox environment, if possible
Perform any necessary education to support personnel and users on process change, etc.
Execute production migration and implement revised HA strategy based on IASPs, if applicable.
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Enablement Considerations Most changes to support IASPs are typically work-
management oriented. IASP migration can generally be transparent to most end-users.
Location of application objects– data, journals, journal receivers– programs and environment definition objects– considerations for object types not supported in IASPs
Setup considerations– Loading of IASPs
Work management considerations– Name space, library list, job initiation, etc.
Application run time considerations– Database connectivity – DDM, JDBC, ODBC– Commitment control scope, join logical files
Additional considerations for multiple IASPs on a system
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Location of Application Objects
*SYSBAS
Objects not supported in IASP
Exit programs, etc. that must be found in *SYSBAS
Operational version of job control objects (SBSD, etc)
Temporary objects
System libraries
Application program objects ?
ASP Group
Permanent application data objects
Spool files (maybe)
Journals & journal receivers
Definitional version of job control objects (SBSD, etc)
Application program objects ?
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Set-Up Considerations
Decide whether program objects will be in *SYSBAS or in IASP
Evaluate IFS directories and files to move to IASP– Create symbolic links in old *SYSBAS IFS location, pointing to
new location in IASP
Populating IASPs with data– Use ASPDEV since RSTLIB default will put objects in
*SYSBAS– Permanent SQL objects cannot span IASP boundaries– Cannot create files, tables, etc. into QSYS2nnnnn– Journal objects must be in same ASP group as objects being
journaled
Create new companion libraries for library content to be split between *SYSBAS and IASP
Modify startup program to vary on IASP
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Work Management Considerations
Determine how application will access specific IASP (name space):
– Job descriptions INLASPGRP – most transparent to users
– SETASPGRP– SQL Connect, etc
Modify JOBDs for USRPRFs– Set initial ASP Group for user profiles associated with
the application
Library list processing
Evaluate SBSDs for changes or attachment to IASP– AJEs, PJEs, JOBQs, Routing programs
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Database Considerations
Views, tables cannot span IASP boundary
– No join logicals over physicals in different ASPs or ASP and SYSBAS
Commit block cannot span IASP boundary
– If connected to IASP RDB, cannot commit changes against both IASP and *SYSBAS (except QTEMP)
Decide on RDB name for IASP
– Single IASP on system, may want to give the old *LOCAL RDB name to the IASP instead.
DDM files
– Configure to use *RDB for connectivity
New permanent libraries or collections for application:
– CRTLIB LIB(library-name) ASP(*ASPDEV) ASPDEV(asp-device-name)– Create collection – default for INASP is the current library name space
JDBC, ODBC, FTP connectivity
– Use JOBD of USRPRF to set INLASPGRP where possible
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Application Considerations
Switching name spaces (SETASPGRP):– Typically avoid from within application– If use, release locks and pointer references first
IASP offline – if program objects remain in SYSBAS:– Application time out may need to increase for vary on processing– Application must handle object not available (as result of vary off,
etc.)
Evaluate use of SBMJOB and any commands with ASPDEV parameter to ensure desired behavior
Can use Vary on/off exit programs for IASP to perform application startup and shutdown processing
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
New Function added in i6.1
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
New i6.1 IASP Related Enhancements Support of job queues in IASP
– Allows applications to run with IASP with fewer changes– Job queue entries not persistant
Support for associating an IASP with a subsystem description– Parameter added to subsystem description object– IASP must be available for subsystem to be active
Quiesce function
– i Suspends transactions & operations to ensure that as much in-flight data as possible is written to disk
Support for pure SYSBAS transaction under commitment control
– Can open commit transactions against SYSBASE in a job with an IASP in the namespace
– Commit transactions still cannot cross SYSBASE/IASP boundaries
Avoiding IPL in previous cases where IASP could not be varied on
Encrypted IASPs
– 5761-SS1 Option 45 - Encrypted ASP Enablement required
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Support for Job Queues in IASP
Job queue object can be created in IASP– Allows applications to run with IASP with fewer changes
Operationally, identical to JOBQ in SYSBAS:– User can manipulate jobs (submit, hold, release, etc.) on JOBQ– User can manipulate JOBQ (clear, hold, release delete, etc.)
Behavioral differences exist:– Jobs on JOBQ in IASP will not persist across vary off / vary on– Jobs on JOBQ in IASP will not be available on backup system after
switchover or failover
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASPFlashCopy
Quiesce Function Suspends transactions & operations to ensure that as much in-flight data as
possible is written to disk– Places transactions at database boundaries if possible
►Use commitment control for maximum effectiveness
Operates against individual IASPs or *SYSBAS
Useful prior to FlashCopy of SYSBAS, FlashCopy of IASP, detaching of mirror copy, switching of mirror copy
Command or API support– CHGASPACT *SUSPEND, *RESUME, *FRCWRT– QYASPCHGAA API – Change ASP Activity
Main Storage
Pinned pageswillremain
“i5/OS Quiesce”
Performing a FlashCopyhttp://publib.boulder.ibm.com/infocenter/systems/scope/i5os/index.jsp?topic=/rzaig/rzaigmanageiasp.htm
ASP-1
IASP
IASP copy ready for
backup use
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Encryption for ASP
Protects data transmission to and from the disk drive (important in a SAN environment).
Protects data transmission in the cross site mirroring environment (only when the data being mirrored is on an encrypted independent disk pool).
Protects data in the case of theft of the disk drive.
Protects data in the case of return or resale of a disk drive (reduces the need to sanitize the disk drive).
Must be specified at IASP creation time – cannot be applied to existing IASPs.
5761-SS1 Option 45 - Encrypted ASP Enablement required
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Cluster Administrative Domain Enhancements
New commands / interfaces– Start / end admin domain– Add / remove admin domain monitored resource entries– Display admin domain monitored resource entries via WRKCLU
i5.4 Monitored Resources enhanced in i6.1– User profiles (*USRPRF)– System values (*SYSVAL)
New Monitored Resources in i6.1– Subsystem Descriptions (*SBSD)– Network Server Descriptions (*NWSD) of types *WINDOWSNT,
*IXSVR, and *ISCSI– NWS Configurations (*NWSCFG)– NWSH Device Descriptions (*NWSHDEV)– NWS Storage Spaces (*NWSSTG)– Tape Device Descriptions (*TAPDEV)– Optical Device Descriptions (*OPTDEV)– Ethernet Line Descriptions (*ETHLIN)– Token-ring Line Descriptions (*TRNLIN)
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASP Adoption in the Market
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Sample ISVs with announced IASP Support
Oracle – JD Edwards World and Enterprise One
SAP
Lawson M3
SPSS
Soft Landing
Vision Solutions
Manhattan
Many others have been implemented in clients
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Steps to Enable Oracle’s JD Edwards World A.73 in an IASP Environment
1) Create the IASP by indicating in iSeries Navigator the unconfigured disk drives that should be in the IASP.
2) Identify the JD Edwards application libraries to be moved into the IASP. Eg JDFDATA, JDFOBJ, JDFSRC, CLTCOM, CLTDTA, CTLSEC. JDFINS library was left in *SYSBAS because it contains JOBQ objects which weren’t supported in IASPs at time of publication of article.
3) Move the libraries to the IASP by saving the libraries to tape or Savefile(*SAVF), deleting them, and restoring them to the IASP by specifying the ASPDEV parameter on RSTLIB command.
4) Modify the JOBDs that JD Edwards uses to point to the IASP group created in step 1 eg CHGJOBD JOBD(<libname>/<jobdname>) INLASPGRP(<IASPname>) INLLIBL(QGPL, TEMP, rest of libraries)
http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP100811
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
SAP Applications and iASPs
SAP has supported iASPs since V5R2 (2002)
SAP in Geographic Mirror whitepaper published (2004)
SAP iASP toolset rolled out and configuration improved (2005)
Direct install of SAP NetWeaver Applications into an iASP (2007)
Leveraging PowerHA for i in an SAP Environment whitepaper published (2008)
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Enabling SAP Applications for iASP
Separated iASP supported and non-iASP supported objects
Modified job descriptions, configuration files, and initialization programs
Modified SAP kernel to run in iASP – Code changes required to call ILE programs using IFS style convention
i.e. /IASP/QSYS.LIB/SAP.LIB/…
Developed lightweight install process for backup host
Configure SAP application to use virtual hosts
Configure exit programs to automate restart of SAP applications after switchover or failover
For more information see http://www.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP101325
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Steps to implement PowerHA for i solution for Lawson M3
1. Use PowerHA for i Solution Based GUI to:– Pick the HA solution you want to implement– Create iASP(s) and setup the HA environment– Migrate Lawson M3 Business Engine and Life Cyle Manager
► User Profiles, IFS Directories, and Databases
2. Modify M3 Business Engine to run under iASP
3. Installing Lawson M3 WorkPlace Application into iASP– Includes installing WebSphere 6.1 into iASP– Modifying M3 WorkPlace to run under iASP
4. Create startup and shutdown exit programs
For more details see “Lawson M3 on IBM PowerHA for I” Whitepaper– http://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/
WP101232
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Customer’s Using IASPs
Many, many successful IASP implementations world-wide– Most for HA solutions– Most have single ASP group per system / partition
Wide variety of industries and sizes– Major financial institutions world wide– Various international government holdings– Telecommunications corporations world wide– Major transportation and shipping companies– Infrastructure and facilities providers– ……. <insert your industry segment here> ……
IASP migrations can take days or months – depends on complexity of applications and environment
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
External Storage Copy Services Network Requirements
IASP based SAN copy solutions require less network bandwidth than full system SAN copy
Only IASP data is replicated
► Examples show significant ongoing network cost savings using IASPs with asynchronous SAN copy services
– Previous experience suggests that a 300Mbs network between sites for full system replication can be reduced to 90Mbs by using IASPs
– IASP based cluster solutions provide the best RTO and RPO, with lower network costs
5250 Interactive Application
SAP Application
www.systeminetwork.comBusiness Continuity with External Storage-Article ID: 20782
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
References and Additional Material
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
IASPs Resources Publications - www.redbooks.ibm.com
– iSeries Independent ASPs: A Guide to Moving Applications to IASPs – V5R3, SG24-6802-00– IASP Performance Study on the iSeries Server, REDP-3771-00– Clustering and IASPs for Higher Availability on the iSeries Server, SG24-5194-01
Websites– i5/OS HA website:
► Ibm.com/systems/i/ha
– InfoCenter► http://publib.boulder.ibm.com/infocenter/iseries/v5r4/index.jsp
Education & Workshops - http://www.ibm.com/servers/eserver/iseries/service/itc
– AS540 – IBM Power HA and IASP Implementation
– IASP for ISV Workshop
IBM Lab Services IASP Feasibility Studies.
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
AS541 PowerHA & IASP Class Description AS541 PowerHA and IASP Enablement Rochester MN Cost $2500 per
student– Learn about PowerHA from a series of presentations and gain practical
experience through hands-on lab exercises. Learn to: ►Create disk pools (IASP) and place highly available objects into them ·►Use the methods that allow users to access information in a disk pool ►Manage an environment with multiple disk pools (server consolidation) ►Define an availability Environment using 5761-HAS IBM PowerHA►Compare and contrast the different options available for implementation under 5761-
HAS- Geographic Mirroring using IBM i IASP Mirroring Technologies- Metro Mirror using IBM System Storage Copy Services, IBM i IASP and
Clustering- Global Mirror using IBM System Storage Copy Services, IBM i IASP and
Clustering ►Create and manage an IBM i family cluster including problem determination ►Establish and manage an environment with continuously available application objects
using a geographic mirror disk pool ►Maintain consistent copies of key system objects like user profiles through operating
system cluster resource services ►Enroll at: http://ibm.com/services/learning search for AS54
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
High Availability Services– IASP Feasibility study– Improved Availability Assessment– Remote Availability Assessment
Performance Review & Optimization SOA Services HATS/Webfacing Services Copy Services for SAN System Storage Security Assessments Voice over IP (VoIP) Services LPAR Toolkit, LPAR Design and
Configuration System Migration Services Server Consolidation
High & Low Level Architecture Reviews
Linux
WebSphere Application Server (WAS)
WebSphere Portal
Lotus Domino
IBM Workplace
Pre-coded & tested software components
System i, System p, System z, System Storage, System x, BladeCenter, Clustered Solutions
Data Center Services
www.ibm.com/systems/services/labservices
Consulting, Design, Skills Transfer, Implementation Services Available:
Resources: IBM Systems Lab ServicesHelping Clients to Design and Deploy IBM Systems and Storage Solutions
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
What We’ve Learned Today
Independent Auxiliary Storage Pools are an Availability Building Block - A requirement for PowerHA
Each release brings enhancements to IASP
Help is available to help you access the changes needed to enable your application to IASP
It’s usually easier than you think to enable an application for IASP.
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
Thank You !
© 2009 IBM Corporation
IBM i
IBM i Technology Center (iTC)
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