FDRDRP reduces the overall disaster recovery time for your z/OS system by enhancing the ABR
full-volume reconstruct process.
FDRDRP co-ordinates multiple FDRINC volume restore tasks in order to minimize tape contention and
reduce delays caused by excessive (and unnecessary) tape rewinds and dismounts.
With FDRDRP you can recover your z/OS system in a much shorter space of time, using your existing
FDRINC backups, and without having to change your backup procedures or JCL.
If you’re creating full and incremental backups with FDRINC, the likelihood is that you are creating
lots of individual backup files each day.
To achieve optimum usage of each backup tape, you’re probably using “tape stacking” to put those
individual FDRINC backups onto one (or maybe just a handful) of high capacity tapes.
In the simplified example below, the FULL backups of disks PROD01, PROD02 and PROD03 have all
been written onto one tape (volser 111111), and all of the Monday incrementals for the same
disks have been written onto another tape (volser 222222).
|Weekend FULL Backups
||Monday INCREMENTAL Backups
Unfortunately, when running multiple concurrent disk restores during a Disaster Recovery
(test or real), FDRINC would experience heavy tape contention, as multiple volume recovery
tasks for volumes PROD01, PROD02 and PROD03 all fight to gain concurrent access to the same
- By automatically co-ordinating multiple concurrent FDRINC volume recoveries, FDRDRP
reduces this tape contention, allowing the recovery to be done is a much shorter window.
- FDRDRP achieves this by passing tapes between multiple FDRINC restore tasks, and by
ensuring that the input tapes are mounted a minimum number of times – often only once.
- By reducing the unnecessary tape delays (caused by rewinds, dismounts and re-mounts)
savings of up to 80% have been achieved when compared to a standard FDRINC recovery.
See the TECH page for a more detailed description on how
FDRDRP addresses the problem.
The key benefit of FDRDRP is that it does not require you to make any changes to your existing
FDRINC backup procedures. This means you can:
And, when you do a Disaster Recovery (test or real):
- Continue to enjoy the benefits of a reduced backup window and minimized application
downtime achieved when taking full and incremental backups with FDRINC.
- Continue getting optimum benefit from your high-capacity tapes by “stacking”
your FDRINC backups onto fewer tapes.
- You can reduce by up to 80% the amount of time it takes to complete the recovery.
In addition to FDRDRP described above, the FDR Storage Management System also includes a range of other tools that can help you prepare for and implement your Disaster Recovery strategy.
FDRINC can reduce your daily backup times by backing up only the data sets that have changed
since the last backup. The powerful volume reconstruct process can restore entire DASD
volumes from your incremental backups.
For more information, see the FDRINC section.
FDRAPPL can backup all the data sets from a single application, even when they are
spread across many disk volumes. You can then restore either the whole application, or
individual data sets, either to their original locations or to new disks.
For more information, see the FDRAPPL section.
FDRERASE can quickly and easily erase the data you’ve restored during your Disaster
Recovery test (or real disaster recovery), ensuring that no residual data is left behind for other
people to access.
For more information, see the FDRERASE section.
For more introductory information on FDRDRP, see the Product Portfolio Sheet
For more technical detail on FDRDRP, see the Tech Detail section.
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