Re: [ADSM-L] Data Deduplication

2007-08-27 10:48:41
Subject: Re: [ADSM-L] Data Deduplication
From: "Allen S. Rout" <asr AT UFL DOT EDU>
Date: Mon, 27 Aug 2007 10:46:50 -0400
>> On Sun, 26 Aug 2007 04:58:45 -0400, "Hughes, George" <GHughes AT CNMC DOT 
>> ORG> said:

> Is TSM planning on adding data deduplication similar to avamar? I
> understand how TSM does not duplicate data now but minor edits in
> files or simple file name changes would result in additional copies
> of the entire file using TSM today.

The 'Rename a top level directory' problem is the best case I've seen
for something like this in TSM.

Every pitch I've yet seen on de-dupe has glossed over where the
metadata goes, and how it's defended.  If you see a data deduplication
solution which doesn't take at -least- as much care over the DB as we
do in TSM land, then my opinion is "Flee at flank speed".

In TSM-land we're very sensitive to the fact that our TSM database is
both the key to our featureset and the most delicate part of our
infrastructure, so we take neurotic degrees of care with it.  I think
perhaps the new products have yet to blood themselves.  Be careful it
doesn't splash on you when they do. :)

- Allen S. Rout

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