[Veritas-bu] cumulative incremental - best to use: when?
2006-08-17 07:59:00
Subject: |
[Veritas-bu] cumulative incremental - best to use: when? |
From: |
stumpb at michigan.gov (Bob Stump) |
Date: |
Thu, 17 Aug 2006 07:59:00 -0400 |
Some NetBackup admins that use diffInc will throw in a CumInc in the
middle of the week.
>>> "Ed Wilts" <ewilts at ewilts.org> 8/17/2006 7:43 AM >>>
James C Siano wrote:
> Would cum.incr. be more advantageous for certain situations.
>
> Or where
> else would it be best used overall from those on the list using that
> formula?
CumInc is used when you want to minimize the tape mounts for a restore
and
also to minimize the risk of data loss in case of a bad tape. Say your
full
was Sunday and it's now Thursday and you need to do a restore. With
DiffInc, you're mounting Sunday's tape, then the Monday, Tuesday, and
Wednesday tapes. If Monday was bad, you're dead in the water. With a
CumInc policy, you'd restore from your Sunday and Wednesday tapes and
be
done.
.../Ed
Ed Wilts
mailto:ewilts at ewilts.org
Mounds View, MN 55112
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