Re: HDS backup process

We've just moved to a new HDS 9900 storage device and now we are planning to
use PPRCopy to replicate volumes for backup. We want to be able to run the
backups on the same lpar that the primary volumes are online to using DFDSS.
I was told that in order to do this the secondary volume labels' must be
clipped before I can bring them online but by clipping them I also loose the
primary-secondary volume relationships. Besides using another lpar or other
3rd party utilities to run the backups, how does one handle this situation?
You don't need to lose the relationship to do the backup. You probably want to backup a point-in-time copy of the volumes, so you can just SUSPEND the PPRC relationship. This freezes the copy and makes it read/write so you can relabel (CLIP) it. After the backup, you can RESYNC the PPRC copy, which just copies tracks updated since the SUSPEND.

You didn't mention if you are going to use HDS ShadowImage ("PPRC" within a subsystem) or real PPRC (HRC) between two subsystems. In either case HDS has manuals on this, I am most familiar with the ShadowImage manual.

Having said that, you might want to check out our FDRINSTANT (see our web site below). It supports ShadowImage and HRC and allows you to do the backup of the point-in-time copy without relabling it or any tomfollery like that.

--
Bruce A. Black
Senior Software Developer for FDR
Innovation Data Processing 973-890-7300
personal: bblack@xxxxxxxxxxxxxxxxx
sales info: sales@xxxxxxxxxxxxxxxxx
tech support: support@xxxxxxxxxxxxxxxxx
web: www.innovationdp.fdr.com

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Relevant Pages

  • RE: HDS backup process
    ... parts of Bruce' mails talk about PPRC ... our z/OS 1.7 PPRC environment using HDS 9980. ... You don't need to lose the relationship to do the backup. ... RESYNC the PPRC copy, which just copies tracks updated since the SUSPEND. ...
    (bit.listserv.ibm-main)
  • Re: Basic remote copy questions
    ... In case of PPRC link failure during backup session, a backup dataset will be incomplete and then unusable. ... Are you backing up the remote PPRC copies of the primary datasets? ...
    (bit.listserv.ibm-main)
  • Re: Basic remote copy questions
    ... In case of PPRC link failure during backup session, a backup dataset will be incomplete and then unusable. ... Are you backing up the remote PPRC copies of the primary datasets? ...
    (bit.listserv.ibm-main)
  • RE: HDS backup process
    ... PPRC commands are designed for PPRC, but there are a few features we have ... You don't need to lose the relationship to do the backup. ...
    (bit.listserv.ibm-main)
  • Re: Info on Setting Up an Lpar for Flashcopy
    ... It would seem that when planning and budgeting for the storage upgrade, ... Does IBM have a product which can backup offline DASD? ... vary it offline to production and online to another LPAR. ... For IBM-MAIN subscribe / signoff / archive access instructions, ...
    (bit.listserv.ibm-main)