Networker

Re: [Networker] compression or lack there of

2008-03-06 13:19:25
Subject: Re: [Networker] compression or lack there of
From: A Darren Dunham <ddunham AT TAOS DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Thu, 6 Mar 2008 18:17:18 +0000
On Thu, Mar 06, 2008 at 12:03:02PM -0600, Paula Ehn wrote:
> I've added up size reported from the savesets on a tape and it still 
> adds up to 792-793GB not something more than that.

That seems correct for a non-compression device.

> Like I said before our old AIT-3 tapes were set the same and showed a 
> vast difference in how much Networker put on the tapes, from 
> 150GB-350GB.  It's for the most part the same data so it should compress 
> the same. It's just not writing more than 792-794GB to a LTO-4 tape.

If you try the LTO drive with the c/u device, does the amount go up?  I
think your data coming from the client is sometimes compressible and
that your AIT drives are compressing them.  

-- 
Darren Dunham                                           ddunham AT taos DOT com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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