ADSM-L

Re: offsite tape pools

2003-04-07 13:24:28
Subject: Re: offsite tape pools
From: "Stapleton, Mark" <stapleto AT BERBEE DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Mon, 7 Apr 2003 12:24:03 -0500
From: Joni Moyer [mailto:joni.moyer AT HIGHMARK DOT COM] 
> I have a question about offsite tape pools.  Is there any way 
> to consolidate clients data onto a minimum number of tapes 
> without doing collocation on the offsite copy pool?  I have 
> an NT domain with 1 onsite and 1 offsite tape pool.  When we 
> go to disaster recovery their restores take forever because 
> they aren't collocated and they are spread over a tremendous 
> amount of tapes and they are all scattered.
> 
> I want to help them, but I don't think we have the tape 
> resources to collocate their offsite tape pool.  ( There are 
> approximately 100 clients and we send the tapes offsite every day.)

MOVE NODEDATA will move data for a particular client from one copy pool
tape to another as long as the operation is contained within the same
copy pool.

However, give this thought some thought: running MOVE NODEDATA prior to
disaster recovery drill isn't a true test of disaster recovery, since
you would not have a chance to run MOVE NODEDATA prior to a real
disaster.

If restoring a client's data from a copy pool is taking too long for a
disaster recovery drill, it will take too long in a real disaster.
Reconsider collocating your copy pool tapes, or at least consider
creating a collocated copy pool for just those clients who must be
restored quickly.

--
Mark Stapleton (mark.stapleton AT berbee DOT com) 

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