IBM SG24-5360-00 manual Other Uses of SnapShot, IXFP20I Snap Function Completed AT

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ixfp snap,80e(dsn=′ test.data.1′ ) : 8 0 f(1000),noprompt

 

 

 

 

AR 0015 IXFP22I SNAP TO CUU= 80F STARTED AT 18:52:48

11/17/1998

 

AR 0015

IXFP20I SNAP FUNCTION COMPLETED AT 18:52:48

11/17/1998

 

AR 0015

1I40I READY

 

 

ixfp snap,80e(dsn=′ test.data.2′ ) : 8 0 f(2000),noprompt

 

 

AR 0015

IXFP25I VTOC ERROR DURING WRITEANY PROCESSING RC=′10′ ON DEVICE=80F

￿AR 0015 1I40I READY

Figure 27. Making a SnapShot with Relocation

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B.1.5 Other Uses of SnapShot

In this section we present some other uses of SnapShot in a VSE/ESA environment.

B.1.5.1 Creating a Test Copy of a VSE/ESA System

SnapShot can be used to make a copy of VSE/ESA system-resident volumes for use in testing new applications in another LPAR. Before taking the snap copy of DOSRES and SYSWK1, however, you need to be sure that all open files on these volumes have been closed. An example of this would be the shutting down of CICS. After DOSRES and SYSWK1 have been snapped, the target volumes could be reassigned from the production LPAR and reallocated to the test LPAR. You now have an exact copy of the production system′s DOSRES and SYSWK1.

B.1.5.2 Copying Data from a Production Virtual Machine to a Test System

IXFP/SnapShot for VSE/ESA can be used to copy selected volumes from the production virtual machine to the test LPAR, using the procedure in B.1.5.1, ªCreating a Test Copy of a VSE/ESA System.º The difference here is that we have a functioning VSE/ESA system already running in the test virtual machine and now want to provide updated data to it.

An example would be that the production virtual machine has access to the full range of device addresses for the RVAÐwhile the test virtual machine has a subset of those addresses. The addresses of the test virtual machine would be in a DVCDN condition to the production virtual machine and thus are available as a target.

In this case, the production data would be quiesced to ensure that all updates were completed. SnapShot would be invoked to copy the selected volumes to addresses accessible by the test virtual machine. The volumes would be made available again to the production virtual machine.

The test partition would then be able to use a current copy of live data for testing of new or revised applications.

Notes: The same process could be used for a data warehousing application where there is no need for up-to-the-minute information, but the full set of data is required to be in the warehouse.

The same approach could be used where the test virtual machine is assigned the task of backing up the data as a low priority virtual machine.

48 RAMAC Virtual Array, Peer-to Peer Remote VSE/ESA

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Contents International Technical Support Organization Page International Technical Support Organization First Edition January Contents Peer-to-Peer Remote Copy Itso Redbook Evaluation Contents Vi Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Preface Team That Wrote This RedbookComments Welcome Your comments are important to usOverview of RVA and the Virtual Disk Architecture What Is an IBM Ramac Virtual Array?IBM Ramac Virtual Array Log Structured FileData Compression and Compaction − Functional track tableWhat Is SnapShot? What Is IXFP/SnapShot for VSE/ESA?VSE/ESA Support for the RVA What Is IXFP? Deleted Data Space ReleaseWhat Is Peer-to-Peer Remote Copy? Reporting FunctionsRamac Virtual Array, Peer-to Peer Remote VSE/ESA RVA Simplifies Your Storage Management RVA Benefits for VSE/ESADisk Capacity Ixfp AdministrationBatch Window Improvement Ramac Virtual Array IXFP/SnapShot for VSE/ESARVA Data Availability Application DevelopmentHardware SnapShot PprcRamac Virtual Array, Peer-to Peer Remote VSE/ESA VSE/ESA Support for the RVA Prerequisites1 VSE/ESA Input/Output Configuration Program VolumesHost Connection Assgn Volume Minimal InitPartial Disk Minimal Init ExecRamac Virtual Array, Peer-to Peer Remote VSE/ESA IXFP/SnapShot for VSE/ESA System VSE/ESA User TimeDTRIATTN,PARM=′ Ixfp REPORT′ Sample Batch Job to Invoke Ixfp Report FunctionIXFP/SnapShot for VSE/ESA AR 0015 CUU DEF DetailPhys DefinedFull Volume Ixfp SnapReply ′ YES′ to Proceed VSE/VSAMRange of Cylinders Non-VSAM File Expired Files Ixfp DDSR,PATEV3 Total VolumeIxfp DDSR,PATEV30000-0999,NOPROMPT Specified File Ixfp DDSR,PATEV3DSN=′ test.data.3′ , NopromptIxfp REPORT,80E,80F Ixfp REPORT,80E Ixfp REPORT,80FIxfp Report Sample Output of Ixfp Report Command Device Detail ReportRamac Virtual Array, Peer-to Peer Remote VSE/ESA Device Summary Report Subsystem Summary ReportRamac Virtual Array, Peer-to Peer Remote VSE/ESA Peer-to-Peer Remote Copy Peer-to-Peer Remote CopyPprc and VSE/ESA Software Requirements Pprc Data FlowPprc Hardware Requirements Invoking peer-to-peer remote copyPrimary Devices of a Pprc Pair Examples of Pprcopy CommandsSnapShot Considerations Secondary Devices of a Pprc PairSetting Up Pprc Paths and Pairs Recovering from a Primary Site FailureDeleting Pprc Pairs and Paths Recovering from a Secondary Site FailurePhysical Connections to the RVA Determining the Logical Control Unit Number for RVA Determining the Channel Connection AddressRamac Virtual Array, Peer-to Peer Remote VSE/ESA Appendix A. RVA Functional Device Configuration Functional Device ConfigurationFunctional Device Configuration Screen CD23 Snap Command Appendix B. Ixfp Command ExamplesSyntax Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Using SnapShot to Copy One Volume to Another NopromptDEFINED-CAPACITY AR 0015 CapacityTest Prod Overall Test Prod Using SnapShot to Copy a File from One Volume to Another Using SnapShot to Copy Files with RelocationOther Uses of SnapShot IXFP20I Snap Function Completed ATDdsr Command Syntax of Ixfp Ddsr Command DetailsUsing Ddsr to Delete a Single Data Set Using Ddsr to Delete the Contents of a VolumeReport Using Ddsr to Delete the Free Space on an RVAAR+0015 IXFP29D Ddsr for For Deletion Report Command Reporting on the Capacity of the RVA Subsystem Reporting on the Capacity of a Single VolumeReporting on the Capacity of Multiple Volumes Device Detail Report FUNC. Capacity MBJOB WCWTEST1 IXFP/SnapShot Setup Job StreamsExec DTRIATTN,PARM=′ Ixfp REPORT′ Ixfp DDSR,80E BG 0000 // JOB InitdiskBG 0000 1A86I Following Assignments are Released Ready Ixfp DDSR,80F50.83 47.86 AR 0015 1I40I Ready $$DITTO BLKFACTOR=1 EOJ$$DITTO BLKFACTOR=1 $$DITTO EOJ 726532.208 MB 117880.209 MB 57754.953 MB Appendix C. VSE/VSAM Considerations Backing up Vsam Volumes Appendix C. VSE/VSAM Considerations Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Appendix D. Iocds Example Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Appendix E. Special Notices Following terms are trademarks of other companies Redbooks on CD-ROMs Appendix F. Related PublicationsInternational Technical Support Organization Publications Other PublicationsRamac Virtual Array, Peer-to Peer Remote VSE/ESA How to Get Itso Redbooks ∙ E-mail OrdersIBM Redbook Fax Order Form Please send me the followingIndex See CKDPprc distance Itso Redbook Evaluation Please answer the following questionsSG24-5360-00
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