What Is Peer-to-Peer Remote Copy? | IBM SG24-5360-00 manual

1.2.3.2 Reporting Functions

The IXFP/SnapShot for VSE/ESA reporting functiion displays logical volume utilization, such as space allocated and data stored on the volume. It can also display a summary of the entire subsystem and its NCL, freespace, capacity allocated and used, and the compression and compaction ratio.

For the capacity management functions supported by OS/390 and VM/ESA, such as reconfiguring the DASD, adding or deleting volumes, and draining an array, you use the RVA′s local operator panel.

1.3 What Is Peer-to-Peer Remote Copy?

We explain functions here on a level that is needed to understand how

peer-to-peer remote copy (PPRC) functions on an RVA. If you would like more detailed descriptions of this data availability architecture, see the RVA redbook entitled Implementing PPRC on RVA, SG24-4951.

PPRC allows the synchronous copying of data from a primary RVA to one or more secondary RVAs at the same or a different location while providing enterprisewide data protection, availability, and ease of system management. The secondary site may be up to 43 km away from the primary. The synchronous nature of PPRC offers a full recovery solution while delivering the highest levels of data integrity and data availability for both operational and disaster recovery environments.

The availability of PPRC on the RVA Model T82 now places the RVA at the heart of mission-critical enterprise storage solutionsÐincluding remote site disaster recovery protection, high availability, and data migration capabilities.

Chapter 1. The IBM RAMAC Virtual Array 5

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IBM SG24-5360-00 manual What Is Peer-to-Peer Remote Copy?, Reporting Functions

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 Team That Wrote This Redbook Preface Your comments are important to us Comments Welcome Log Structured File What Is an IBM Ramac Virtual Array?IBM Ramac Virtual Array Overview of RVA and the Virtual Disk Architecture − Functional track table Data Compression and Compaction What Is IXFP/SnapShot for VSE/ESA? What Is SnapShot?VSE/ESA Support for the RVA Deleted Data Space Release What Is IXFP? Reporting Functions What Is Peer-to-Peer Remote Copy? Ramac Virtual Array, Peer-to Peer Remote VSE/ESA RVA Benefits for VSE/ESA RVA Simplifies Your Storage ManagementDisk Capacity Administration IxfpBatch Window Improvement IXFP/SnapShot for VSE/ESA Ramac Virtual Array Application Development RVA Data AvailabilityHardware Pprc SnapShot Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Prerequisites VSE/ESA Support for the RVA Volumes 1 VSE/ESA Input/Output Configuration ProgramHost Connection Exec Volume Minimal InitPartial Disk Minimal Init Assgn Ramac Virtual Array, Peer-to Peer Remote VSE/ESA System VSE/ESA User Time IXFP/SnapShot for VSE/ESA Sample Batch Job to Invoke Ixfp Report Function DTRIATTN,PARM=′ Ixfp REPORT′ IXFP/SnapShot for VSE/ESA Defined DetailPhys AR 0015 CUU DEF Ixfp Snap Full Volume VSE/VSAM Reply ′ YES′ to Proceed Range of Cylinders Non-VSAM File Expired Files Total Volume Ixfp DDSR,PATEV3Ixfp DDSR,PATEV30000-0999,NOPROMPT Ixfp DDSR,PATEV3DSN=′ test.data.3′ , Noprompt Specified File Ixfp REPORT,80E Ixfp REPORT,80F Ixfp REPORT,80E,80FIxfp Report Device Detail Report Sample Output of Ixfp Report Command Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Subsystem Summary Report Device Summary Report Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Peer-to-Peer Remote Copy Peer-to-Peer Remote Copy Pprc Data Flow Pprc and VSE/ESA Software Requirements Invoking peer-to-peer remote copy Pprc Hardware Requirements Secondary Devices of a Pprc Pair Examples of Pprcopy CommandsSnapShot Considerations Primary Devices of a Pprc Pair Recovering from a Primary Site Failure Setting Up Pprc Paths and Pairs Recovering from a Secondary Site Failure Deleting Pprc Pairs and PathsPhysical Connections to the RVA Determining the Channel Connection Address Determining the Logical Control Unit Number for RVA Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Functional Device Configuration Appendix A. RVA Functional Device Configuration Functional Device Configuration Screen CD23 Appendix B. Ixfp Command Examples Snap CommandSyntax Ramac Virtual Array, Peer-to Peer Remote VSE/ESA Noprompt Using SnapShot to Copy One Volume to Another AR 0015 Capacity DEFINED-CAPACITYTest Prod Overall Test Prod Using SnapShot to Copy Files with Relocation Using SnapShot to Copy a File from One Volume to Another IXFP20I Snap Function Completed AT Other Uses of SnapShot Syntax of Ixfp Ddsr Command Details Ddsr Command Using Ddsr to Delete the Contents of a Volume Using Ddsr to Delete a Single Data Set Using Ddsr to Delete the Free Space on an RVA ReportAR+0015 IXFP29D Ddsr for For Deletion Report Command Device Detail Report FUNC. Capacity MB Reporting on the Capacity of a Single VolumeReporting on the Capacity of Multiple Volumes Reporting on the Capacity of the RVA Subsystem IXFP/SnapShot Setup Job Streams JOB WCWTEST1Exec DTRIATTN,PARM=′ Ixfp REPORT′ Ready Ixfp DDSR,80F BG 0000 // JOB InitdiskBG 0000 1A86I Following Assignments are Released Ixfp DDSR,80E $$DITTO BLKFACTOR=1 EOJ 50.83 47.86 AR 0015 1I40I Ready $$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 Other Publications Appendix F. Related PublicationsInternational Technical Support Organization Publications Redbooks on CD-ROMs Ramac Virtual Array, Peer-to Peer Remote VSE/ESA ∙ E-mail Orders How to Get Itso Redbooks Please send me the following IBM Redbook Fax Order Form See CKD Index Pprc distance Please answer the following questions Itso Redbook Evaluation SG24-5360-00