Amanda-Users

Re: DAT hardware or software compression

2002-11-21 19:53:32
Subject: Re: DAT hardware or software compression
From: Sven Kirmess <amanda.users AT kzone DOT ch>
To: amanda-users AT amanda DOT org
Date: Fri, 22 Nov 2002 01:04:46 +0100
marc.bigler AT day DOT com wrote:

> Thanks for your quick answer. Ok it sounds clear to me that all points to
> the advantages of having software compression. I will then disable hardware
> compression.

If there is one flipped bit (read error), everything compressed with gzip
after that position is lost. With HW compression you can continue restoring
after that position plus some overhead.

I use HW compression as long as the backup utility can not gzip every file
independantly or use an algorithm that can recover after a read error.


Sven