ADSM-L

Re: DRM / backingup STG POOLS

1998-09-22 22:46:43
Subject: Re: DRM / backingup STG POOLS
From: Simon Watson <Simon.S.Watson AT OPENMAIL.FIC32.BSPSER.SIMIS DOT COM>
Date: Wed, 23 Sep 1998 10:46:43 +0800
It is a good idea to run the tape to tape job as well, for several reasons:

      the disk to copypool job may have failed for some reason and not have
completed.

      the disk pool may have filled up and overflowed to primary tape pool
during backup processing, so this data also needs to be copied to copypool.

      better to be safe than sorry!

It is also a good idea to run a 2nd disk to copypool job just prior to
migration of disk to primary tape pool to pick up any backups that have
occured since disk to copypool job.  In our case we run the two jobs
you mention at quite different times (so that the data remains on disk
during the day to make restores quicker, at least of recently changed
files) so there are often a few files picked up by this job.  Bottom
line is the job is very little overhead if there is no data to move anyway.

Cheers,
Simon
----------
| From: ADSM-L AT VM.MARIST DOT EDU; ben AT EDMS DOT NET
| From: ADSM-L AT VM.MARIST DOT EDU; ben AT EDMS DOT NET
| To: ADSM-L AT VM.MARIST DOT EDU
| Subject: DRM / backingup STG POOLS
| Date: Wednesday, 23 September, 1998 4:46AM
|
| I want to be sure here so it does not haunt me later.
|
| Here is what we do:
|
| Everyday we:   BACKUP STGPOOL  backupDISKpool copypool
|
| then we:        migrate backupDISKpool to backupTAPEpool.
|
| Now, do I need to backup the backupTAPEpool or not?  I figure not because
| I have backedup the DISKpools before I migrated them to tape.
| If I back up the primary tape pools, it would be redundent...right?
|
| To check things, I ran a:   BACKUP STGPOOL backupTAPEpool copypool
| and data moved.   Why?
|
| ADSM is much smarter than I am, so I figure I must be doing something
| wrong.  Or does ADSM not know that it already backedup the data from
| the disk pools?
|
| -Ben
|
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