ADSM-L

Re: D2D on AIX

2004-09-22 12:37:26
Subject: Re: D2D on AIX
From: Richard Rhodes <rrhodes AT FIRSTENERGYCORP DOT COM>
Date: Wed, 22 Sep 2004 12:36:39 -0400
>Tim, we recently ran a bunch of tests on client side compression.
>In every test the backup ran for 2 to 3 times longer.  In some cases
>this wouldn't be a big deal when you look at the backup alone being
>incremental and all.  However, we also believed that it would also
>cause the restore to run 2 to 3 times as long to uncompress the data.
>As a result of these tests and thoughts we decided not to
>implement client side compression.

Uncompress should be much faster and less cpu intensive than compression.
In compression you are searching for redundant tokens.  In uncompression
you are basically performing token substitution.

Rick


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