ADSM-L

Re: Designing a solution for fast manual restore

2000-02-01 00:16:53
Subject: Re: Designing a solution for fast manual restore
From: Simon Watson <simon.s.watson AT SHELL.COM DOT BN>
Date: Tue, 1 Feb 2000 13:16:53 +0800
Eric,

I agree you should move back to a true incremental ad infinitum
approach.  Here is the expensive part - upgrade your library to handle
enough cartridges to contain all your data.  Use Collocation and/or
Filespace Collocation to keep data together.  You can minimise the
number of tapes used if required so you will always have some scratch -
some systems or filespaces will then double up on tapes.

For disaster recovery use a copy pool, without collocation enabled and
send these tapes offsite daily.

This seems to be the best strategy for ADSM.  It gives you the best of
both worlds, fast recoveries with no operator intervention (fast
automatic restores!), and full disaster recovery as everything is
duplicated offsite.

If you have not already upgraded to the new 3590 drives, then I would
also recommend that also & you can cut the number of tapes required in
half (for each storage pool).

Hope this helps.  It should be cheap for you anyway - right?

Regards,
Simon

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