FDRINSTANT - EMC Community Network · PDF file1.4 Sounds Too Good To Be True? ... FDRCOPY with...

C O N C E P T S & F A C I L I T I E S G U I D E

FDRINSTANT

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Introduction ................................................................................................................................................... 3

PART ONE. Executive Overview ............................................................................................. 5

1.0 Introduction .............................................................................................................................................. 6

1.1 What Is FDRINSTANT? ........................................................................................................................... 6

1.2 What Additional Hardware/Software Will I Need? .................................................................................... 6

1.3 What Will FDRINSTANT Do For Me? ...................................................................................................... 7

1.4 Sounds Too Good To Be True? ................................................................................................................ 8

1.5 Why Can’t I Just Use My Standard Backup Facilities?… ........................................................................ 8

1.6 What Does This All Mean? ....................................................................................................................... 9

1.7 What About “Consistent Backup”? ......................................................................................................... 10

1.8 HSDM & ExHPDM Support .................................................................................................................... 12

HSDM .................................................................................................................................................... 12

ExHPDM ................................................................................................................................................ 12

Using HSDM and/or ExHPDM ............................................................................................................... 12

1.9 FDRINSTANT with FDRCOPY ............................................................................................................... 13

1.10 Volume Consolidation with FDRINSTANT, FDRCOPY and FDRPAS .................................................. 14

1.11 Summary .............................................................................................................................................. 15

PART TWO. Technical Detail ................................................................................................ 17

2.0 Introduction ............................................................................................................................................ 18

FDRINSTANT and the FDR DASD Management Family ...................................................................... 18

FDRINSTANT and the Advanced DASD Subsystem Facilities .............................................................. 19

2.1 FDRINSTANT With EMC TimeFinder .................................................................................................... 20

Enhancing Backup & Restore with FDRINSTANT and TimeFinder ....................................................... 21

Enhancing FDRCOPY with FDRINSTANT and TimeFinder ................................................................... 21

Support For Additional TimeFinder Features ......................................................................................... 21

SRDF Support ........................................................................................................................................ 21

2.2 FDRINSTANT With StorageTek SnapShot Copy ................................................................................... 22

Enhancing Backup & Restore with FDRINSTANT and SnapShot Copy ................................................ 22

Enhancing FDRCOPY with FDRINSTANT and SnapShot Copy ........................................................... 22

FDRINSTANT

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2.3 FDRINSTANT With Hitachi ShadowImage ............................................................................................ 23

Enhancing Backup & Restore with FDRINSTANT and ShadowImage .................................................. 23

Enhancing FDRCOPY with FDRINSTANT and ShadowImage .............................................................. 23

Support For Additional ShadowImage Features .................................................................................... 23

TrueCopy Support .................................................................................................................................. 23

FlashCopy Support On Hitachi Disk Subsystems .................................................................................. 24

2.4 FDRINSTANT With IBM FlashCopy ....................................................................................................... 25

Enhancing Backup & Restore with FDRINSTANT and FlashCopy ........................................................ 25

Enhancing FDRCOPY with FDRINSTANT and FlashCopy ................................................................... 25

FlashCopy On Hitachi Disk Subsystems ............................................................................................... 25

FlashCopy Consistency Group .............................................................................................................. 26

PART THREE. JCL Examples ................................................................................................ 27

Example 1: ABR Full Backup (EMC Example) ............................................................................................. 28

Example 2: ABR Incremental Backup (Hitachi Example) ............................................................................. 29

Example 3: FDR Backup (StorageTek Example) ......................................................................................... 30

Example 4: DSF Backup (IBM Example) ..................................................................................................... 31

Example 5: FDRCOPY “In-Box” Copy (EMC Example) ............................................................................... 32

Example 6: FDRCOPY “Offline” Copy (IBM Example) ................................................................................ 33

FDRINSTANT

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PRODUCT OVERVIEW 1PARTFor more than 30 years, Innovation Data Processing has been producing high-quality Storage Management Software. Over the years, its products have evolved into today’s ultra high-speed, safe, reliable storage management solutions for z/OS, LAN and Open Systems Data.

It all started with the FDR Storage Management Family, of which over 5000 licenses have now been sold worldwide. The FDR Family is the complete Storage Management System for z/OS.

FDR has become the industry standard for fast, reliable backups of z/OS data.

ABR adds a layer of automation to the standard functions of FDR, providing advanced backup facilities like Incremental Backup, Application Backup and Archiving.

FDRCRYPT is an extra cost option to the FDR Family that provides encryption services for all FDR and ABR backups (as well as sequential output datasets created by an IDCAMS REPRO) protecting these backups against unauthorized access by anyone who does not possess the proper encryption keys.

COMPAKTOR and FDRREORG further enhance the suite by adding intelligent and powerful reorganization processes, for whole DASD volumes and for PDS, VSAM and IAM data sets.

FDREPORT provides extensive customized DASD Management Reporting to suit many needs and purposes.

FDRDRP is an extension of ABR that can reduce full-volume recovery time by up to 80%.

FDRINSTANT enables FDR/ABR to take near 24 x 7 backups of offline volumes, created by the latest DASD Subsystem features like StorageTek SnapShot Copy, EMC TimeFinder, Hitachi ShadowImage and IBM FlashCopy. FDRINSTANT also enhances the performance of other utilities in the FDR Family, such as FDRCOPY.

FDRPAS (FDR Plug and Swap) is a separately licensed component of the FDR Family, which allows for the non-disruptive movement of z/OS disk volumes from one disk device to another. When new disk subsystems are installed, active online disk volumes can be swapped to drives in the new subsystem without disrupting normal operations or requiring a re-IPL. This allows a 24 x 7 installation with no window for major re-configurations and hardware changes to install and activate new hardware.

FDRERASE V5.4 L50 is an EAL2+ certified product that can be licensed as an option to FDRPAS (or separately) which can quickly erase many z/OS disk volumes in parallel, allowing you to erase your data in the minimum elapsed time.

FDRERASE/OPEN allows you to quickly and easily erase the data from any FBA disk that can be attached to an Intel (x86) or compatible platform, SCSI or FIBRE attached. Multiple levels of erasure are available, as well as PRINT and VERIFY options to check that the data has been successfully erased.

The FDR/UPSTREAM Family of Products builds on the strengths of the FDR Storage Management Family providing a fast, safe and reliable solution to backing up Open Systems data from file servers and workstations, across a network connection to disk or tape on the z/OS host. If the Open Systems data is resident on an EMC Symmetrix/DMX with Enterprise Storage Platform (ESP), FDRSOS and FDR/UPSTREAM/SOS products provide additional performance enhancements to the backup and restore process by utilizing high-speed mainframe channels.

INTRODUCTION

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PRODUCT OVERVIEW 1PART INTRODUCTION

UPSTREAM Reservoir is designed for those users who wish to take advantage of the many strengths provided by FDR/UPSTREAM, but would prefer to use an Open Systems environment (e.g. Windows, AIX, Linux, Sun Solaris) for hosting the backup management engine.

IAM is Innovation’s alternative to VSAM KSDS, ESDS and (as a cost option) AIX and RRDS files. It eliminates VSAM performance bottlenecks and reduces VSAM file sizes by more than 50%.

FATS/FATAR and FATSCOPY are a set of multi-purpose tape subsystem Media Integrity tools that allow for online tape certification, verification and erasure, as well as the ability to analyze and copy tapes.

Each of the Innovation products is described in a range of Concepts & Facilities Guides.

In this particular guide, we take a look at one of the members of the FDR DASD Management Family—FDRINSTANT.

PART ONE is an Executive Summary providing a general overview of FDRINSTANT and the benefits it can provide.

PART TWO provides a bit more detail on the support provided for each DASD subsystem on which FDRINSTANT operates (EMC, StorageTek, Hitachi, IBM).

PART THREE contains some JCL examples of using FDRINSTANT.

Any comments or suggestions regarding this guide can be directed to: [email protected]

And don’t forget to visit our website for additional and up-to-date information on all Innovation products: www.innovationdp.fdr.com

© Copyright 2007 Innovation Data Processing

Each of the Innovation products is described in a range of Concepts & Facilities Guides.

In this particular guide, we take a look at one of the members of the FDR DASD Management Family—FDRINSTANT.

PART ONE is an Executive Summary providing a general overview of FDRINSTANT and the benefits it can provide.

PART TWO provides a bit more detail on the support provided for each DASD subsystem on which FDRINSTANT operates (EMC, StorageTek, Hitachi, IBM).

PART THREE contains some JCL examples of using FDRINSTANT.

5

PART ONEExecutive Overview

This section is an Executive

Summary, providing a general

overview of FDRINSTANT and

the benefits it can provide.

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PRODUCT OVERVIEW 1PART1.0 IntroductionDespite significant advances in backup technology over the past three decades, many data centers are still finding that they do not have sufficient time to secure all of their changed data within the window available.

Continually, there is more data to backup and much less time to do it in. Installed DASD space is forever increasing to cope with demand. This requirement is driven, in part, by a continued growth of traditional mainframe applications. There is also now an explosion of new E-commerce systems, which are increasingly being located under the z/OS platform.

Coupled with this increase in DASD requirement is the constant pressure from the business to move much closer towards 24 x 7 operations. Again, this is leaving significantly less time to take the high quality backups that are so important for the continued protection of a company’s corporate data.

Innovation Data Processing recognizes these problems and is continually developing its FDR DASD Management System to ensure that it keeps pace with all the latest DASD subsystem technologies currently available on the market. FDRINSTANT is part of that continued development program.

1.1 What Is FDRINSTANT? FDRINSTANT is a separate cost option to the FDR DASD Management Family. It exploits the very latest technologies available in today’s disk subsystems, providing significant enhancements in functionality and performance to the following standard features of the suite:

Backups (Including those encrypted with FDRCRYPT)

• FDR full volume backup

• DSF data set backup

• ABR automated volume backup (full-volume and incremental)

Data Set Copy/Move

• FDRCOPY

1.2 What Additional Hardware/Software Will I Need?If you are currently utilizing one or more of the following advanced DASD subsystem facilities for z/OS data, you could be taking advantage of the powerful new features provided by FDRINSTANT, working in conjunction with the standard FDR DASD Management Family:

• TimeFinder - EMC

• SnapShot Copy - StorageTek

• ShadowImage - Hitachi

• FlashCopy (V1 & V2) - IBM (and Hitachi)

Refer to PART TWO of this Guide for more information on which features of FDRINSTANT are available with each of the above DASD subsystem facilities. Contact Innovation for the latest detailed information about the specific DASD models supported by each hardware vendor for each DASD subsystem facility.

EXECUTIVE OVERVIEW 1PART

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1.3 What Will FDRINSTANT Do For Me?It will revolutionize your backups!

FDRINSTANT is one of the most important advances in backup technology for the last two decades. Even if you are currently utilizing a fast DASD Management backup system, like Innovation’s ABR Incremental Backup, you will see staggering results.

• FDRINSTANT will allow you to take near 24x7 backups of your data. These backups can be taken without having to make the data unavailable for several hours to the online users or your overnight batch processes.

• The backups taken with FDRINSTANT can be either ‘manual’ backups created by FDR or DSF, or they can be full-featured Volume and Incremental backups created with ABR.

• The actual backups are no different from those taken by the standard facilities - it is the way in which the backups are taken with FDRINSTANT that is different.

• If you are an existing user of the FDR Family, you will need to make only minimal changes to your current backup JCL and control statements to start using FDRINSTANT.

• If you are not currently a user, you will find the JCL and control statements very easy-to-use.

No More Problems With The Backup Window!

With FDRINSTANT, you will no longer have to concern yourself with a backup window that runs into several hours. For example:

• You will not need to shut down CICS/TSO online services for several hours while you take your backups. If you have E-commerce systems located under the z/OS platform, they can remain available almost 24x7 to the user community.

• You will no longer have to suffer delays in the start up of your overnight batch work, as you wait for your nightly backups to complete.

• There will be no more problems with backup ‘overruns’ delaying the start up of online services each morning and no more struggling to accommodate re-runs of failed or cancelled backups before the end of the backup window.

• When you add more DASD to the floor, you won’t have to worry about accommodating the additional backups into an already tight backup window.

• And there will be no more sleepless nights, worrying about how the next chunk of your backup window is going to disappear to the latest critical application that runs longer into the night.

In short: no more problems with the backup window!

EXECUTIVE OVERVIEW 1

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1.4 Sounds Too Good To Be True?Not at all!

FDRINSTANT simply takes full advantage of the advanced features in today’s DASD subsystems, such as TimeFinder, SnapShot Copy, ShadowImage and FlashCopy. Although their methods of implementation differ, all these features share the same common ability – i.e. to create offline, duplicate copies of some or all of your DASD volumes.

FDRINSTANT then lets you run your standard FDR, DSF or ABR Volume or Incremental backups against these offline duplicate volumes, while your applications (CICS, TSO, Batch etc) continue to use the real data on the original online volumes:

CICS Shutdown19:00

19:05Post-CICSbackups begin...

20:30 ?

Without FDRINSTANT

When will your

How much sooner couldyou be running your final Post-Batch Backup?

overnight batch workbe able to begin?

CICS Shutdown19:00

19:05

(Offline)Post-CICSbackupsbegin...

With FDRINSTANT

Overnight batch canbegin immediately!

19:05

Pre-Batch Backup…

Batch Phase 1

Mid-Batch Backup #1

Batch Phase 2

Mid-Batch Backup #2

Batch Phase 3

Mid-Batch Backup #3

Batch Phase ?

Batch Phase 1 Pre-Batch Backup

Batch Phase 2 Mid-Batch Backup #1


Batch Phase ? Mid-Batch Backup #3

Final Post-BatchBackup…

22:00

05:00

Without FDRINSTANT

22:00

24:00 ?

With FDRINSTANT

Elapsed Time

(Mins)

12.34

6.04 6.25

3.36

ABR ABRwith

HSDM

ABRwith

ExHPDM

ABRwith

HSDM &ExHPDM

FDRCOPY without FDRINSTANT

z/OS HOST

Offline Duplicate,Created By:• TimeFinder• SnapShot Copy• ShadowImage• FlashCopy

FDR/DSF/ABRwith

FDRINSTANT

YOURAPPLICATIONS

ZOS001

ZOS001

TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem

FASTCPK without FDRINSTANT

FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem

FDRCOPY with FDRINSTANT

TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem

FASTCPK with FDRINSTANT

FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem

Standard Volume,Online to z/OS.

1.5 Why Can’t I Just Use My Standard Backup Facilities?Without FDRINSTANT, it is extremely difficult to take full advantage of the potential benefits provided by the presence of these offline duplicate volumes.

For example, in the diagram above, to backup the offline copy of ZOS001 with standard backup utilities, you would need to bring it online to your z/OS system. Before doing that, you would have to alter the name (volser) of the volume, because z/OS does not allow two disks with the same volser to be online at the same time.

This then presents a further set of problems because renaming a volume destroys the complex connections between the VTOC/VVDS on the volume and the z/OS ICF Cataloging system.

FDRINSTANT does not require the duplicate volume to be brought online. It can access it across the channel while it remains offline to z/OS, thus eliminating all of the aforementioned problems with duplicate volsers and the potential for VTOC/VVDS and Catalog discrepancies!

Important: ABR has been significantly enhanced to interact with FDRINSTANT, particularly in the area of handling the z/OS Update Bit during full and incremental backups. It should be noted that DFHSM has not been similarly enhanced and does not have an equivalent to FDRINSTANT.

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1.6 What Does This All Mean?It means two things.

First, with FDRINSTANT, you can now take full advantage of the offline volumes without having to negotiate the difficult problem of duplicate volsers. Second, you can remove almost entirely from the critical path the time it takes to do your backups!

So, for example (see diagram below), if you currently take post-CICS backups and they are causing a delay to the start-up of your overnight batch work, you will realize the immense benefit that FDRINSTANT can provide.

Instead of waiting for the post-CICS backups to complete (how long does this take at your installation?), with FDRINSTANT, you could be taking them as offline backups, utilizing the offline duplicates, while at the same time starting up your batch work against your primary online volumes.

CICS Shutdown19:00


20:30 ?

Without FDRINSTANT

When will your



CICS Shutdown19:00

19:05


With FDRINSTANT


19:05

Pre-Batch Backup…

Batch Phase 1

Mid-Batch Backup #1

Batch Phase 2

Mid-Batch Backup #2

Batch Phase 3

Mid-Batch Backup #3

Batch Phase ?






22:00

05:00

Without FDRINSTANT

22:00

24:00 ?

With FDRINSTANT

Elapsed Time

(Mins)

12.34

6.04 6.25

3.36

ABR ABRwith

HSDM

ABRwith

ExHPDM

ABRwith

HSDM &ExHPDM


z/OS HOST


FDR/DSF/ABRwith

FDRINSTANT

YOURAPPLICATIONS

ZOS001

ZOS001

TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem


FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem


TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem


FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem


Equally, if some of your batch work involves taking mid-batch backups, you’ll also see the benefits that FDRINSTANT can provide. As shown below, the ability to run the mid-Batch backups as an offline process alongside each phase of the batch work can drastically reduce the overall batch time. As indicated by the ‘?’ in the bottom clock, your batch work (including the backups) will finish considerably sooner than before:

CICS Shutdown19:00


20:30 ?

Without FDRINSTANT

When will your



CICS Shutdown19:00

19:05


With FDRINSTANT


19:05

Pre-Batch Backup…

Batch Phase 1

Mid-Batch Backup #1

Batch Phase 2

Mid-Batch Backup #2

Batch Phase 3

Mid-Batch Backup #3

Batch Phase ?






22:00

05:00

Without FDRINSTANT

22:00

24:00 ?

With FDRINSTANT

Elapsed Time

(Mins)

12.34

6.04 6.25

3.36

ABR ABRwith

HSDM

ABRwith

ExHPDM

ABRwith

HSDM &ExHPDM


z/OS HOST


FDR/DSF/ABRwith

FDRINSTANT

YOURAPPLICATIONS

ZOS001

ZOS001

TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem


FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem


TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem


FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem


If you are experiencing any problems with your backup window, at any time during the day or night, FDRINSTANT could help!

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1.7 What About “Consistent Backup”?Consistent Backup is supported by FDRINSTANT on various DASD Subsystems, as described in PART TWO. As this is a fairly new approach to taking backups, the following section looks more closely at the pros and cons of consistent backup.

On FDRINSTANT operations that involve the backup of the offline duplicates of multiple disks, these duplicates may be separated from their primary volumes at a different point-in-time, possibly separated by seconds, depending on the number of volumes being processed. So, there is no guarantee that an update involving I/Os to several volumes will be completely reflected on all the split offline duplicates, or on the resultant FDRINSTANT backups of those offline duplicates.

If an update is not fully captured across all volumes, this could potentially cause problems when the data is restored. This “I/O consistency” is particularly important to applications that execute dependent write I/Os:

• Dependent writes are issued by the application in a particular order.

• The next write in the sequence is not done until the previous write has successfully completed.

• Database Management Systems (DBMSs, such as DB2) use dependent writes.

• This ensures data integrity in the event of a hardware or software failure.

To execute a database update, the DBMS may write information about the update to a log data set, then it will do the actual database update (consisting of one or more I/Os). It will then update the log to indicate that the database update was successfully completed (committed).

If the DBMS is restarted after a failure, it can always tell which database updates were completed (and which were not completed) by comparing the logs with the actual databases. It can then do the appropriate recovery. However, if inconsistent volume backups have been restored, the logs and the databases may not be synchronized and the DBMS may not be able to successfully recover the databases.

The usual method of insuring that database applications are re-startable after a restore is to prevent any update activity from occurring during the backup. This ensures that the logs and the database will be in synch, even if the splitting of the offline duplicates was not entirely synchronised across all volumes.

Under DB2, for example, the LOG SUSPEND command is used to quiesce all update activity during a backup. Although this protects against recovery problems, it does mean a slight interruption to the service to the database, albeit a brief one.

With FDRINSTANT’s “consistent backup” support, the quiescing of update activity on DBMSs may no longer be necessary:

• All offline duplicate volumes are split at the same point-in-time.

• This is achieved by preventing the DBMS using dependent I/O during the split process.

• The DBMS can continue doing “standard” updates to the databases (i.e. not dependent I/O).

• Integrity and consistency of the data is ensured across all volumes.

• This results in a copy of the data that is re-startable after a restore.

• There is no need to suspend updates to the database during the operation.

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1PARTHowever, it should be noted that there are restore considerations when using consistent splitting on DB2 backups. For example, consistent split is a restart only solution (i.e. as if power went down), so logs cannot be automatically re-applied after the restore, and there is no facility for RECOVER SYSTEM LOGONLY. For this reason, you should consult the appropriate DB2 documention for more information regarding the differences between using the Consistent Split approach versus Log Suspend.

It is important to note that “consistent backup” may not be suitable for all applications. For example, many applications do not provide the sort of dependent writes and recovery, as provided by the DBMS systems described above. So, although “consistency splitting” ensures I/O consistency between volumes, it does not ensure that a sequence of I/Os issued to a given volume is fully completed. For example:

• If a VSAM file is undergoing a CA split that requires multiple I/Os to the cluster and several I/Os to the VVDS, the split may still capture an image of the volume at a point in the middle of those I/Os, which may make the cluster unusable when restored.

• If a split occurs in the middle of a sequence of update I/Os, data sets may contain improper formatting or I/O errors, and the VTOC or VVDS may have partially completed updates, which will cause errors or failures.

• To be clear; these problems may also occur if you do a normal backup of a normal online volume while it is being updated—hence the usual recommendation to always quiesce update activity during backups.

• The utilization of “consistent backup” techniques does nothing to remove this problem.

So, unless you are running a DBMS with recovery facilities built-in, as described earlier, or you take all possible steps to quiesce update activity on a volume before it is split, the possibility still exists that data which is being updated at the time of the backup may not be usable when it is restored. For this reason, Innovation recommends against the use of “consistent backup” on volumes containing:

• Catalogs (including the ABR catalog)

• Security data

• JES2/JES3 spool or checkpoint data

• Coupling Facility data sets

• Paging data sets

• Data used by other products which communicate between systems (e.g. cross-system ENQ).

Using “consistent backup” on such volumes may result in interlocks and system failures due to holding a hardware SYSVTOC RESERVE on all volumes involved in the split, while at the same time inhibiting I/Os to the volumes.

See PART TWO for more detailed information on FDRINSTANT support for consistent backup across the various DASD subsystems.

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1PART1.8 HSDM & ExHPDM SupportHSDM

ABR users can take advantage of FDRINSTANT’s support for HSDM (High-Speed Data Mover), an option available on various StorageTek DASD subsystems.

FDRINSTANT interacts with HSDM to work directly with the compressed data, reading the data from disk without de-compressing it. Depending on the levels of compression achieved, the amount of data that must be read from disk and transferred to the backup media can be reduced by up to 60%. This will lead to a corresponding reduction in the elapsed time of the FDRINSTANT-driven backup task.

When restoring data back to disk, FDRINSTANT again interacts with HSDM to directly write the compressed track images, providing similar reductions in restore elapsed times. In the event that the data must be restored to a non-HSDM disk (e.g. in a disaster recovery situation where no HSDM-capable devices are available) FDRINSTANT calls a software decompression routine provided by StorageTek to restore the uncompressed data to the disk in the normal way.

ExHPDM

ABR users can also take advantage of FDRINSTANT’s support for StorageTek’s ExHPDM (Extended High Performance Data Mover). ExHPDM is a software product that can consolidate multiple tape outputs (such as FDR or ABR backups) onto one tape. ExHPDM receives the data blocks from multiple concurrent backups and writes these blocks of data to a single tape. This improves the utilization of high-performance tapes, making full use of the improved capacity and the faster channels and recording speeds of today’s modern cartridge drives.

Users who run multiple concurrent backups will reduce the number of backup tapes (and drives) required to complete the process and should also improve the performance of the overall backup task. ExHPDM is hardware independent. Whether you are using StorageTek, or any other high-performance high-capacity tape drives, you can benefit from this feature.

Using HSDM and/or ExHPDM

To demonstrate the enhanced performance that can be achieved using the combination of FDRINSTANT and HSDM and/or ExHPDM, Innovation carried out a series of performance comparison tests. Full details of these tests can be obtained on request, but here is a summary –

• The addition of HSDM reduced the ABR Elapsed Time by 52%

• The addition of ExHPDM reduced the ABR Elapsed Time by 49%

• The addition of HSDM and ExHPDM reduced the ABR Elapsed Time by 71%

Important Note: FDRINSTANT is required for the support of HSDM. For ExHPDM, FDR users (PGM=FDR and PGM=FDRDSF) 5.3 L50 or higher is required. For ABR users (PGM=FDRABR) this requires 5.3 L56 or higher, plus FDRINSTANT to support ExHPDM. The above savings in Elapsed Time are possible whether backing up from an offline volume, or from a standard online volume.

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1PART1.9 FDRINSTANT with FDRCOPYFDRCOPY is a utility within the FDR DASD Management system to copy (or move) datasets from one volume to another. Most types of z/OS data set are supported, including Sequential, PDS, PDSE, DB2, VSAM and IAM.

FDRCOPY is often used in place of IEBCOPY and is an ideal tool for the ad-hoc, day-to-day copying of datasets (e.g. for creating test versions of production data sets). FDRCOPY is also very useful in major DASD migration/consolidation projects or SMS conversion tasks. For more detailed information on the facilities of FDRCOPY, please see the ‘FDR Storage Management Family’ Concepts & Facilities Guide.

FDRINSTANT can enhance the performance of FDRCOPY on certain DASD subsystems (see PART TWO for details). As shown below, when copying or moving a data set from one disk to another, a ‘standard’ FDRCOPY reads each track from the input disk, and writes it to its new location on the target disk.

CICS Shutdown19:00


20:30 ?

Without FDRINSTANT

When will your



CICS Shutdown19:00

19:05


With FDRINSTANT


19:05

Pre-Batch Backup…

Batch Phase 1

Mid-Batch Backup #1

Batch Phase 2

Mid-Batch Backup #2

Batch Phase 3

Mid-Batch Backup #3

Batch Phase ?






22:00

05:00

Without FDRINSTANT

22:00

24:00 ?

With FDRINSTANT

Elapsed Time

(Mins)

12.34

6.04 6.25

3.36

ABR ABRwith

HSDM

ABRwith

ExHPDM

ABRwith

HSDM &ExHPDM


z/OS HOST


FDR/DSF/ABRwith

FDRINSTANT

YOURAPPLICATIONS

ZOS001

ZOS001

TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem


FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem


TARGET

INPUT

FDRCOPY

z/OSS/390

CHANNEL

Disk Subsystem


FASTCPK

z/OSS/390

CHANNEL

Disk Subsystem


FDRINSTANT enhances FDRCOPY to use the advanced features on certain DASD subsystems to copy/move the disk tracks within the subsystem itself, without transferring tracks up and down the disk channel. If the input and target disks are in the same disk subsystem, FDRCOPY can instruct the disk subsystem to copy/move the tracks internally. This removes the overhead of the channel transfers and significantly improves the performance of the FDRCOPY task.

CICS Shutdown19:00


20:30 ?

Without FDRINSTANT

When will your



CICS Shutdown19:00

19:05


With FDRINSTANT


19:05

Pre-Batch Backup…

Batch Phase 1

Mid-Batch Backup #1

Batch Phase 2

Mid-Batch Backup #2

Batch Phase 3

Mid-Batch Backup #3

Batch Phase ?






22:00

05:00

Without FDRINSTANT

22:00

24:00 ?

With FDRINSTANT

Elapsed Time

(Mins)

12.34

6.04 6.25

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ABR ABRwith

HSDM

ABRwith

ExHPDM

ABRwith

HSDM &ExHPDM


z/OS HOST


FDR/DSF/ABRwith

FDRINSTANT

YOURAPPLICATIONS

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FASTCPK

z/OSS/390

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1PARTWith an FDRINSTANT-driven FDRCOPY, like the one previously described, data sets can be copied/moved in a fraction of the time it takes with a ‘standard’ FDRCOPY. No special parameters are required; FDRCOPY will automatically detect when the input and target disks are in the same disk subsystem. If multiple data sets are being copied, FDRCOPY will use the FDRINSTANT method wherever possible, resorting to the ‘standard’ method only for the copy/move of data sets across different disk subsystems.

To demonstrate the potential performance gain with an FDRINSTANT-driven FDRCOPY, here are some sample elapsed times from two separate tests where FDRCOPY was used to move 2.2GB of data between two disks within the same DASD subsystem.

# of Total Elapsed Elapsed Data Data copied Time Time Sets Copied (GB) (FDRINSTANT) (Standard) Test#1 1 2.2 1sec 1.8 min Test#2 600 2.2 2.7min 4.4 min

• In Test #1, the 2.2GB of data was contained in only 1 data set, and it was moved by the FDRINSTANT-driven FDRCOPY in just 1 second, compared to the 1.8 minutes required to move the same 2.2GB of data with a ‘standard’ FDRCOPY using regular I/O.

• In Test #2, the same amount of data was copied (2.2GB), but this time it was spread across 600 separate data sets. The FDRINSTANT-driven FDRCOPY took 2.7 minutes, compared to the 4.4 minutes required by the ‘standard’ FDRCOPY. The increase in elapsed time over the previous test was due to the allocating and cataloging of the 600 output datasets.

When copying data sets, either with FDRCOPY or any other utility, any update access to the source data should be quiesced to ensure the integrity of the data. If the data sets are to be moved rather than copied, they must first be unallocated (i.e. not in use), because the catalog, VTOC and VVDS must be updated to reflect the new location of each data set.

As you can see from the above tests, these periods of “down time” on the source data can be significantly reduced when doing the copy/move with an FDRINSTANT-driven FDRCOPY.

1.10 Volume Consolidation with FDRINSTANT, FDRCOPY and FDRPASWith the increase in the use of larger capacity DASD, many data centres are now faced with the task of consolidating their smaller disks (e.g. 3390-3s or 3390-9s) onto larger disks (e.g. 3390-27 etc).

FDRPAS is a separate member of the FDR DASD Management Family and is the recommended tool for the non-disruptive movement of entire volumes to target disks of the same size or larger. However, if you need to consolidate, for example, multiple 3390-9s onto a 3390-27, the first 3390-9 can be moved non-disruptively with FDRPAS, but the second and third 3390-9 will have to be moved at the data set level. We would recommend FDRCOPY (driven by FDRINSTANT wherever possible) as the best tool for moving the data from the second and third volumes.

If you are planning a DASD consolidation or large-scale data migration in the near future, please contact Innovation for a detailed description on how the combination of FDRPAS and an FDRINSTANT-driven FDRCOPY can be used to merge several smaller disks onto one larger disk with the minimum of disruption to your users.

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1PART1.11 SummaryWhether it is a volume backup (with FDR or ABR), a dataset backup (with DSF), or a dataset copy/move (with FDRCOPY), FDRINSTANT provides a significant boost in performance by exploiting the very latest technologies available in today’s advanced DASD subsystems.

If you are utilizing one or more of these advanced systems, FDRINSTANT will help you get the very best from your investment and ensure that you are using this latest technology to the fullest. This is the technology of the future and FDRINSTANT brings it to you today!

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PART TWOTechnical Detail

This section provides additional

technical detail on the facilities

provided by FDRINSTANT

across the various DASD

Subsystem platforms.

Section 2.0 — Introduction

Section 2.1 — EMC

Section 2.2 — StorageTek

Section 2.3 — Hitachi

Section 2.4 — IBM

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1PART2.0 IntroductionPART ONE provided an Executive Overview of FDRINSTANT, giving a general description of the various ways that it can be used to take full advantage of the latest features in today’s advanced DASD subsystems.

We discussed how these features enable FDRINSTANT to significantly reduce the time and resources required in carrying out important daily DASD Management tasks, like backup and dataset copy/move. We also looked at the effect that these savings would have on critical issues such as the backup window and the constant push towards 24x7 operations.

In PART TWO, we are now going to look in more detail at how FDRINSTANT can be used alongside the backup and data set copy/move modules of the FDR DASD Management Family, and in conjunction with the various DASD subsystems. It is not possible within the scope of this guide to provide a complete description of the product across all of these subsystems. For a full technical description, please refer to sections 25 to 29 of the FDR User Manual.

FDRINSTANT and the FDR DASD Management Family

FDRINSTANT can be used to provide significant performance improvements to the following members of the FDR DASD Management Family:

• FDR - The volume dump/restore utility for dumping the entire contents of an online DASD volume.

FDRINSTANT enhances FDR so that it can use an offline image of a volume for its backup, leaving the original online volume free for other processing.

• DSF - The data set dump/restore utility for dumping selected datasets from one or more online DASD volumes.

FDRINSTANT enhances DSF so that it can back up from offline images of volumes, leaving the datasets on the original online volumes free for other processing.

• ABR - Provides a layer of automation for FDR and DSF to take volume and incremental backups, which are recorded in a control mechanism to allow for fast and easy restores of datasets and whole DASD volumes.

FDRINSTANT enhances ABR volume and incremental backup so that it can use offline images of volumes, leaving the original datasets or volumes free for other processing. ABR correctly handles the z/OS Update Bits on the online volume, without causing any delay to the availability of the online volume.

• FDRCOPY - The general-purpose data set copy/move utility. FDRINSTANT enhances FDRCOPY in two ways. First, if the input and output disks are

within the same DASD subsystem, FDRCOPY can copy/move the data tracks internally, without having read/write each track up/down the DASD channel. Secondly, FDRCOPY can copy images of datasets from an offline volume across to an online volume in either the same, or a different DASD subsystem.

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1PARTFDRINSTANT and the Advanced DASD Subsystem Facilities

FDRINSTANT works in conjunction with the following DASD Subsystems to provide some/all of the enhancements described above. See the indicated sections for a description of which enhancements are supported on each DASD Subsystem.

• TimeFinder EMC See section 2.1

• SnapShot Copy StorageTek See section 2.2

• ShadowImage Hitachi See section 2.3

• FlashCopy (V1 & V2) IBM (and Hitachi) See section 2.4

For the complete documentation on the support within FDRINSTANT for these subsystems, please refer to the following sections in the FDR User Manual -

• TimeFinder Section 25

• SnapShot Copy Section 26

• ShadowImage Section 27

• FlashCopy (V1 & V2) Section 29

PART THREE at the end of this Guide contains several illustrative JCL examples of using FDRINSTANT with these DASD subsystems.

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1PART2.1 FDRINSTANT With EMC TimeFinderThis section outlines the support provided in FDRINSTANT for TimeFinder, a set of features available on various EMC disk subsystems that allow for the “instant” creation of exact duplicates of existing DASD volumes.

When used in conjunction with TimeFinder, FDRINSTANT allows you to instantly freeze a copy of an online z/OS disk volume and easily backup or copy data from that frozen copy as if it was coming from the original volume. Updates to the data need to be quiesced only for the few moments necessary to create that frozen copy. The combination of FDRINSTANT and TimeFinder can be used to enhance the following members of the FDR Storage Management Family -

• FDR full volume backup and restore

• DSF data set backup and restore

• ABR volume backup and restore (full-volume and incremental backup)

• FDRCOPY data set copy

Although generically referred to in this Guide as “TimeFinder”, the set of features available on various EMC disk subsystems can be divided into three main offerings –

• TimeFinder/Mirror. This feature allows the creation of BCVs (Business Continuance Volumes), which are mirrors of standard online disks that can be attached (“established”) or detached (“split”) on command. When established, all data tracks are initially copied to the offline BCV, and then updated tracks are mirrored to the BCV, maintaining it as an exact copy of the standard disk. When split, BCVs then become a frozen “point-in-time” image of the volume they were detached from. This image can then be used as the source for backups or data set copies.

Note: Timefinder/Mirror BCVs are the original Symmetrix “point-in-time” support, originally referred to as “TimeFinder/BCV”.

• TimeFinder/Clone. This feature allows the creation of frozen point-in-time images by “Snapping” a full-volume image or a data set image from one standard online disk to another. Although the Snap completes in moments and the snap target can be immediately used as if the copy was complete, the data is actually copied in the background by the disk control unit.

• TimeFinder/Snap. This feature allows the creation of frozen point-in-time images by “Snapping” a full-volume image from a standard disk to a “virtual disk” in the same disk subsystem. Virtual disks are special devices which are not assigned real disk space; however, there is also a pool of “save disks” associated with the virtual disks. When you Snap a standard disk to a virtual disk, tracks are not immediately copied, but as tracks are updated on the standard disk, the “before” images of those tracks are saved on a pool disk, so the pool disks can be much smaller than the associated virtual disks. When an application (such as FDRINSTANT) reads the virtual disk for backup or data set copy, the disk subsystem returns either the saved updated tracks or the original unmodified tracks from the standard disk, resulting in a point-in-time image of the standard volume.

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1PARTEnhancing Backup & Restore with FDRINSTANT and TimeFinder

Once created, the offline BCV mirrors (created with TimeFinder/Mirror), or the offline images (created with TimeFinder/Clone or TimeFinder/Snap) can be used as input to an FDRINSTANT backup, as described in PART ONE. This can be either a fully-managed volume incremental backup taken with ABR, or a non-managed volume or data set backup taken with FDR or DSF.

Enhancing FDRCOPY with FDRINSTANT and TimeFinder

The combination of FDRINSTANT and TimeFinder can also be used to improve the performance of FDRCOPY.

• When copying datasets between volumes in the same EMC disk subsystem, FDRINSTANT enhances FDRCOPY so that the data tracks are copied by a background process (EMCSNAP) in the disk subsystem. The utilization of EMCSNAP allows you to treat the data as it if was immediately copied without having to wait for the copy process to complete.

• FDRINSTANT also enhances FDRCOPY to allow it to read data sets from an offline image created by any of the TimeFinder features, and to then copy those selected datasets across to an online image in either the same, or a different disk subsystem.

Support For Additional TimeFinder Features

FDRINSTANT also supports some additional features of TimeFinder:

• TimeFinder/Consistency Group. This feature allows for the “splitting” of multiple BCVs (with TimeFinder/Mirror), or the “snapping” of multiple images (with TimeFinder/Clone or TimeFinder/Snap) at the same point-in-time. Once the group of mirrors or images have been split or snapped at a consistent point, FDRINSTANT can then take a “consistent backup” of that group of volumes. See PART ONE of this guide for a detailed discussion on Consistent Backup.

• Concurrent BCVs. With this feature (which is part of TimeFinder/Mirror), two BCVs can be assigned to the same standard volume. The EMC microcode keeps both copies synchronized with the standard device, and either BCV can be split and re-established at any time. Either (or both) BCV can then be used in conjunction with an FDRINSTANT-driven backup with FDR, DSF or ABR.

SRDF Support

BCVs created with TimeFinder/Mirror must be located in the same EMC disk subsystem as their associated online volume. However, EMC also supports the creation of copies of volumes in a separate subsystem using the SRDF (Symmetrix Remote Data Facility) option.

FDRINSTANT does not directly support SRDF copies of online volumes, but there are ways that they can be utilized for FDR and DSF (but not ABR) backups. Contact Innovation for more details on backing up SRDF-created copies of your DASD volumes.

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1PART2.2 FDRINSTANT With StorageTek SnapShot CopyThis section outlines the support provided in FDRINSTANT for SnapShot Copy, a licensed feature of StorageTek disk subsystems that allows for the “instant” creation of exact duplicates of existing DASD volumes.

The combination of FDRINSTANT and SnapShot Copy can be used to enhance the following members of the FDR Storage Management Family:





Enhancing Backup & Restore with FDRINSTANT and SnapShot Copy

When used in conjunction with SnapShot Copy, FDRINSTANT allows you to instantly freeze a copy of an online disk volume and then run an FDR, DSF or ABR backup from that frozen copy as if it was coming from the original volume. Updates to the data need to be quiesced only for the few moments necessary to create that frozen copy.

Enhancing FDRCOPY with FDRINSTANT and SnapShot Copy

The combination of FDRINSTANT and SnapShot Copy can also be used to improve the performance of FDRCOPY:

• When copying datasets between volumes in the same disk subsystem, FDRINSTANT enhances FDRCOPY so that the data tracks are actually copied by a background process, driven by SnapShot Copy. This allows you to treat the data as it if was immediately copied, without having to wait for the copy process to complete.

• FDRINSTANT also enhances FDRCOPY to allow it to read datasets from an offline image created by SnapShot Copy, and to then copy those selected datasets across to an online image, in either the same, or a different disk subsystem.

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1PART2.3 FDRINSTANT With Hitachi ShadowImageThis section outlines the support provided in FDRINSTANT for ShadowImage, a licensed feature of various Hitachi Data Systems disk subsystems that allows for the creation of exact duplicates of existing DASD volumes. The combination of FDRINSTANT and ShadowImage can be used to enhance the following members of the FDR Storage Management Family:





Enhancing Backup & Restore with FDRINSTANT and ShadowImage

When used in conjunction with ShadowImage, FDRINSTANT allows you to instantly freeze a copy of an online disk volume and easily run an FDR, DSF or ABR backup from that frozen copy as if it was coming from the original volume. Updates to the data need to be quiesced only for the few moments necessary to create that frozen copy.

Enhancing FDRCOPY with FDRINSTANT and ShadowImage

The combination of FDRINSTANT and ShadowImage can also be used to enhance FDRCOPY, allowing it to read data sets from a split, offline, point-in-time ShadowImage volume (or volumes), and copy those data sets across to one or more online volumes, in either the same, or a different disk subsystem.

Support For Additional ShadowImage Features

FDRINSTANT also supports some additional features of ShadowImage:

• ShadowImage Quick Split. This allows ShadowImage to operate more like IBM FlashCopy, where the ShadowImage pairs do not need to be pre-defined.

• ShadowImage Consistent Split. This involves the splitting of multiple ShadowImage volumes from their primary volume at the same, consistent point-in-time. Once the group of ShadowImage volumes has been split at a consistent point, FDRINSTANT can then take a “consistent backup” of the data on that group of volumes. See PART ONE of this guide for a detailed discussion on Consistent Backup

TrueCopy Support

FDRINSTANT also supports Hitachi Synchronous Remote Copy (HRC, also called TrueCopy) which can be used within a single disk subsystem, or between two subsystems. TrueCopy does not support Quick Split or Consistent Split. Contact Innovation for more details on TrueCopy support in FDRINSTANT.

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1PARTFlashCopy Support On Hitachi Disk Subsystems

Hitachi disk subsystems have an extra cost option that emulates IBM FlashCopy.

FDRINSTANT’s FlashCopy support for IBM disk subsystems, described in Section 2.4, will work on an Hitachi system with the FlashCopy option installed.

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1PART2.4 FDRINSTANT With IBM FlashCopyThis section describes the support provided in FDRINSTANT for IBM FlashCopy, a feature of many IBM disk subsystems, which is available in two versions:

• FlashCopy V1 provides full-volume copies. The source and target disks of the FlashCopy must be within the same LSS (logical subsystem) within the physical subsystem.

• FlashCopy V2 provides full-volume copies and data set copies. The source and target disks can be any two disks within the same subsystem; they are no longer required to be in the same LSS.

FDRINSTANT supports both versions of FlashCopy. The combination of FDRINSTANT and FlashCopy can be used to enhance the following members of the FDR Storage Management Family:





Enhancing Backup & Restore with FDRINSTANT and FlashCopy

FlashCopy allows for the “instant” creation of exact duplicates of existing DASD volumes. When used in conjunction with FlashCopy, FDRINSTANT allows you to instantly freeze a copy of an online disk volume and easily create an FDR, DSF or ABR backup from that frozen copy as if it was coming from the original volume. Updates to the data need to be quiesced only for the few moments necessary to create that frozen copy.

Enhancing FDRCOPY with FDRINSTANT and FlashCopy

The combination of FDRINSTANT and FlashCopy can also be used to enhance and improve the performance of FDRCOPY.

• FDRINSTANT can read data sets from an offline, point-in-time image of one or more volumes created by FlashCopy, and copy those selected data sets across to one or more online volumes, in either the same, or a different disk subsystem.

• If FlashCopy V2 is available, FDRINSTANT also improves the performance of FDRCOPY when copying datasets between two online volumes that are in the same FlashCopy V2-capable subsystem. It does this by automatically invoking the FlashCopy API to do an “instant” copy of the data sets. This allows you to treat the data as it if was immediately copied, without having to wait for the copy process to complete

FlashCopy On Hitachi Disk Subsystems

Some Hitachi disk subsystems have an extra cost option that emulates FlashCopy. The FlashCopy support described above will work on a Hitachi system with the FlashCopy option installed.

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1PARTFlashCopy Consistency Group

FDRINSTANT supports Consistent Flash (FlashCopy Consistency Group) in control units that support FlashCopy V2.

Consistent Flash involves the flashing of multiple volumes at the same, consistent point-in-time. Once the group of volumes has been flashed at a consistent point, FDRINSTANT can then take a “consistent backup” of the data on that group of volumes. See PART ONE of this guide for a detailed discussion on Consistent Backup.

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PART THREEJCL Examples

This section contains some JCL

examples to illustrate FDRINSTANT

being used to enhance the following

features of the FDR DASD

Management System.

Example 1 — ABR (Full) Backup

Example 2 — ABR (Incr) Backup

Example 3 — FDR Backup

Example 4 — DSF Backup

Example 5 — FDRCOPY (in box)

Example 6 — FDRCOPY (offline)

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1PARTExample 1: ABR Full Backup (EMC Example)This example shows FDRINSTANT being used with EMC TimeFinder/Snap (or TimeFinder/Clone) to run an ABR Full-Volume backup. The JCL and control statements required for this process are fully described in section 25 of the FDRINSTANT manual. Similar examples for running FDRINSTANT-driven ABR backups on StorageTek, Hitachi and IBM DASD subsystems can be found in sections 26, 27 and 29 respectively.

Step 1 creates point-in-time images of the selected online volumes and marks the ABR Full backups as completed. A new ABR backup generation is created for each volume, and ABR then updates the corresponding online volume with information about that backup. This process is executed using the ABR statement SNAP, which drives EMCSNAP. It normally takes only a few seconds per volume. As soon as the process is complete for all selected volumes, updates to the online copies of those volumes can begin again.

Although only one TAPE DD is present, the SNAP will actually process up to 10 volumes concurrently, to reduce processing time. If this were a consistent backup (i.e. using TimeFinder/Consistency Group), the SNAP statement would be replaced by CONSNAP, and all of the resultant SNAPs would be done at the same/consistent point-in-time.

• For TimeFinder/Snap, SNAPUNIT specifies the address of a virtual disk.

• For TimeFinder/Clone, SNAPUNIT specifies the address of a real disk.

Step 2 then creates the actual ABR full volume tape backups by reading the offline point-in-time images.

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Step 1: SNAP selected volumes to create point-in-time images//STEP1 EXEC PGM=FDRABR,REGION=0M//SYSPRINT DD SYSOUT=*//SYSPRIN1 DD SYSOUT=*//SYSPRIN2 DD SYSOUT=*//TAPE1 DD DUMMY//SYSIN DD *

SNAP TYPE=FDR,DSNENQ=USE,DATA=USED,ENQERR=NO,RTC=YES MOUNT VOL=PAY001,SNAPUNIT=07C8 MOUNT VOL=PAY002,SNAPUNIT=07C9 MOUNT VOL=PAY003,SNAPUNIT=07CA

Step 2: ABR Full Volume backups from the offline images//STEP2 EXEC PGM=FDRABR,REGION=0M//SYSPRINT DD SYSOUT=*//SYSPRIN1 DD SYSOUT=*//SYSPRIN2 DD SYSOUT=*//TAPE1 DD DSN=FDRABR.LASTAPE.ABR1,UNIT=CART,DISP=(MOD,KEEP)//TAPE2 DD DSN=FDRABR.LASTAPE.ABR2,UNIT=CART,DISP=(MOD,KEEP)//SYSIN DD *

DUMP TYPE=FDR,DSNENQ=USE,DATA=USED,ENQERR=NO,SNAP=USE,RTC=YES MOUNT VOL=PAY*

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1PARTExample 2: ABR Incremental Backup (Hitachi Example)This example shows FDRINSTANT being used with Hitachi ShadowImage Quick Split to run an ABR Incremental backup. The JCL and control statements required for this process are fully described in section 27 of the FDRINSTANT manual. Similar examples for running FDRINSTANT-driven ABR backups on EMC, StorageTek, and IBM DASD subsystems can be found in sections 25, 26 and 29 respectively.

Step 1 creates the ShadowImage Quick Split pairings of the selected “PAY***” volumes using the ABR statement PSPLIT. The presence of the additional FDRPPQAS DD card tells the PSPLIT command to do a “quick add and split” to automatically create and then SPLIT the pairings using the target UNITs specified via PPRCUNIT. The standard ABR processing on the z/OS update flags in the VTOC is then done. The whole process normally takes only a few seconds per volume. As soon as it is complete for all selected volumes, updates to the online copies of those volumes can begin again.

If this were a consistent backup (i.e. using ShadowImage Consistent Split), the PSPLIT statement would be replaced by CONPSLIT and a CTG parameter would be added to identify the ShadowImage Consistency Group to be backed up. All of the resultant PSPLITs would then be done at the same/consistent point-in-time.

Step 2 then creates the standard ABR incremental backups using the point-in-time offline Quick Split images.

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Step 1: Create and Split the point-in-time images//STEP1 EXEC PGM=FDRABR,REGION=0M//SYSPRINT DD SYSOUT=*//SYSPRIN1 DD SYSOUT=*//SYSPRIN2 DD SYSOUT=*//FDRPPQAS DD DUMMY //TAPE1 DD DUMMY//SYSIN DD *

PSPLIT TYPE=ABR,DSNENQ=USE,DATA=USED,ENQERR=NO MOUNT VOL=PAY001,PPRCUNIT=17D1 MOUNT VOL=PAY002,PPRCUNIT=17D2 MOUNT VOL=PAY003,PPRCUNIT=17D3 MOUNT VOL=PAY004,PPRCUNIT=17D4

Step 2: ABR Incremental backups from the offline images//STEP2 EXEC PGM=FDRABR,REGION=0M//SYSPRINT DD SYSOUT=*//SYSPRIN1 DD SYSOUT=*//SYSPRIN2 DD SYSOUT=*//FDRPPQAS DD DUMMY//TAPE1 DD DSN=FDRABR1,UNIT=CART,DISP=(,KEEP)//SYSIN DD *

DUMP TYPE=ABR,DSNENQ=USE,DATA=USED,ENQERR=NO,PPRC=(USE,RET) MOUNT VOL=PAY*

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1PARTExample 3: FDR Backup (StorageTek Example)This example shows FDRINSTANT being used with StorageTek SnapShot Copy to run an FDR full volume backup. The JCL and control statements required for this process are fully described in section 26 of the FDRINSTANT manual. Similar examples for running FDRINSTANT-driven FDR backups on EMC, Hitachi and IBM DASD subsystems can be found in sections 25, 27 and 29 respectively.

In this example, the updates to volume PROD01 are quiesced and then Step 1 in the job executes the Innovation program FDRSNAP to ‘snap’ PROD01 to an offline image at address 01FA. When Step 1 completes (which usually only takes a few seconds), updates to the datasets on PROD01 can resume while Step 2 takes an FDR backup of the offline, snapped copy of PROD01.

After the backup is complete, FDR will release all of the back-end (i.e. internal disk) storage associated with the snapped volume.

The backups created by the example above would be normal FDR volume backups. There are no special considerations for restoring these backups.

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Step 1: Creating the offline duplicate//STEP1 EXEC PGM=FDRSNAP//SYSPRINT DD SYSOUT=*//TAPE1 DD DUMMY//SYSIN DD *

SNAP TYPE=FDR MOUNT VOL=PROD01,SNAPUNIT=01FA

Step 2: Backing up from the offline duplicate//STEP2 EXEC PGM=FDR,REGION=0M,COND=(0,NE,SNAP)//SYSPRINT DD SYSOUT=*//DISK1 DD UNIT=SYSALLDA,VOL=SER=PROD01,DISP=OLD//TAPE1 DD DSN=BACKUP.VPROD01(+1),// UNIT=TAPE,DISP=(,CATLG)//SYSIN DD *

DUMP TYPE=FDR,SNAP=(USE,REL),DCT=YES

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1PARTExample 4: DSF Backup (IBM Example)This example shows FDRINSTANT being used with IBM FlashCopy to run a DSF data set backup. The JCL and control statements required for this process are fully described in section 29 of the FDRINSTANT manual. Similar examples for running FDRINSTANT-driven FDR backups on EMC, StorageTek and Hitachi DASD subsystems can be found in sections 25, 26 and 27 respectively.

In this example, program FDRDSF is going to be used to backup datasets with a high-level qualifier of ‘CICS’. The FlashCopy target volumes at addresses 01F2 and 01F3 are part of a pool of target volumes used for this kind of operation (i.e. they are not permanently assigned). In our sample job, they will be used to copy volumes CICS01 and CICS02.

When it is time to run the backup, updates to the CICS datasets on CICS01 and CICS02 are quiesced. Step 1 executes Innovation’s FDRFLASH program to start the FlashCopy sessions from the original volumes to the targets. This should take only a few seconds, after which time, updates to the original volumes can begin.

Step 2 will then execute FDRDSF to backup the required datasets from the offline FlashCopy copies of CICS01 and CICS02, processing the two backups in parallel. After the backup is complete, the FlashCopy sessions will be terminated.

The backups created by the example above would be normal DSF data set backups. There are no special considerations for restoring these backups.

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Step 1: Start the FlashCopy session//STEP1 EXEC PGM=FDRFLASH//SYSPRINT DD SYSOUT=*//TAPE1 DD DUMMY//SYSIN DD *

FCOPY TYPE=FDR MOUNT VOL=CICS01,FLASHUNIT=01F2 MOUNT VOL=CICS02,FLASHUNIT=01F3

Step 2: Backup from the offline copies//STEP2 EXEC PGM=FDRDSF,REGION=2M,COND=(0,NE,FCOPY)//SYSPRINT DD SYSOUT=*//DISK1 DD UNIT=SYSALLDA,VOL=SER=CICS01,DISP=OLD//TAPE1 DD DSN=BACKUP.VCICS01(+1),UNIT=TAPE,DISP=(,CATLG)//SYSPRIN1 DD SYSOUT=*//DISK2 DD UNIT=SYSALLDA,VOL=SER=CICS02,DISP=OLD//TAPE2 DD DSN=BACKUP.VCICS02(+1),UNIT=TAPE,DISP=(,CATLG)//SYSPRIN2 DD SYSOUT=*//SYSIN DD *

DUMP TYPE=DSF,ATTACH,FCOPY=(USE,REL),RTC=YES SELECT DSN=CICS**

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1PARTExample 5: FDRCOPY “In-Box” Copy (EMC Example)This example shows FDRINSTANT being used with EMC TimeFinder to run an FDRCOPY “in-box” copy of some datasets, i.e. where the input and output volumes involved in the copy process are in the same EMC DASD subsystem.

The JCL and control statements required for this process are fully described in section 25 of the FDRINSTANT manual. A similar example for running FDRINSTANT-driven FDRCOPY “in-box” copies on StorageTek and IBM DASD subsystems can be found in sections 26 and 29 respectively.

In this example, all datasets with a high-level qualifier of ABC (followed by any number of additional levels) will be copied across to another online volume. The datasets will be located via the z/OS catalogs, using the SELECT DSN= keyword. The target for the copy process will be two “test” volumes called TST001 and TST002. The newly created copies of the datasets will automatically acquire a new second level of “COPY” in their dsn.

FDRCOPY will automatically recognize if the input and output volumes are in the same DASD subsystem and will invoke internal EMC services to copy the required tracks, without having to send the data up and down the channel. This function is automatic, requiring no special operands, so the sample below is the same as a normal FDRCOPY job.

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FDRINSTANT with TimeFinderFDRCOPY “in-box” Dataset Copy

//COPYFILE EXEC PGM=FDRCOPY,REGION=0M//SYSPRINT DD SYSOUT=*//SYSIN DD *

COPY TYPE=DSF,MAXCARDS=1000 SELECT CATDSN=ABC.**,NEWI=.+COPY, NVOL=(TST001,TST002)

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PA

RT 3 JCL Examples

Example 6: FDRCOPY “Offline” Copy (IBM Example)This example shows FDRINSTANT being used with IBM FlashCopy to run an FDRCOPY “offline” copy of some datasets, where the input volume is an offline image created by FlashCopy, and the output volume is a standard online volume, which can be either in the same or a different DASD subsystem.

The JCL and control statements required for this process are fully described in section 29 of the FDRINSTANT manual. A similar example for running FDRINSTANT-driven FDRCOPY “offline” copies on EMC, StorageTek and Hitachi DASD subsystems can be found in sections 25, 26 and 27 respectively.

Step 1 starts FlashCopy sessions for the online volumes SMS001 and SMS002, using the offline targets indicated by FLASHUNIT. Step 2 then copies (and renames) the selected datasets from the offline FlashCopy volumes. The datasets are copied across to online volumes chosen by DFSMS based on the storage class supplied by the STORCLAS parameter.

FDRINSTANT with FlashCopyFDRCOPY “offline” Data Set Copy

Step 1: Start the FlashCopy sessions to the offline targets//FCOPY EXEC PGM=FDRFLASH//SYSPRINT DD SYSOUT=*//SYSIN DD *

FCOPY TYPE=FDR MOUNT VOL=SMS001,FLASHUNIT=01F4 MOUNT VOL=SMS002,FLASHUNIT=01FA

Step 2: Copy/rename the datasets//COPY EXEC PGM=FDRCOPY//SYSPRINT DD SYSOUT=*//DISK1 DD UNIT=SYSALLDA,VOL=SER=SMS001,DISP=OLD//DISK2 DD UNIT=SYSALLDA,VOL=SER=SMS002,DISP=OLD//SYSIN DD *

COPY TYPE=DSF,FCOPY=(USE,REL) SELECT DSN=PAYROLL.**,NEWI=..+COPY,STORCLAS=BATCH

C O N C E P T S & F A C I L I T I E S G U I D E

May 2006

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