Amanda-Users

Re: enabling hardware compression ?

2004-08-23 15:47:10
Subject: Re: enabling hardware compression ?
From: Joshua Baker-LePain <jlb17 AT duke DOT edu>
To: Brian Cuttler <brian AT wadsworth DOT org>
Date: Mon, 23 Aug 2004 15:45:29 -0400 (EDT)
On Mon, 23 Aug 2004 at 3:33pm, Brian Cuttler wrote

> You might even find its worthwhile to compress some partitions on
> clients and some on the server, depending on where your free CPU
> time is and where/if you have any network bottlenecks. Each DLE
> can be individually selected for client/server/no compression, 
> though HW compression is an all or nothing deal.
> 
> Warning - never double compress a DLE !

Keep in the mind that the OP is using an Ultrium Drive.  Those are 
actually smart enough to *not* hardware compress incompressible data.  So, 
with those drives, you can actuall mix hardware and software compression, 
something that is a strict no-no with any other tape hardware.

-- 
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University

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