Networker

Re: [Networker] maximum speed to tape using bigasm and /dev/zero

2006-05-01 20:49:45
Subject: Re: [Networker] maximum speed to tape using bigasm and /dev/zero
From: Matthew Robert <Matthew.Robert AT AU.EY DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Tue, 2 May 2006 10:46:57 +1000
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My personal best is 189MB/sec on LTO3 backing up a mix of file & print 
data and some big SQL dbases at once.

Im going to give bigasm a run to see how well it runs..

Cheers,
Matt




Preston de Guise <enterprise.backup AT GMAIL DOT COM> 
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02/05/2006 10:34 AM
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Re: [Networker] maximum speed to tape using bigasm and /dev/zero






Typically running bigasm against IBM LTO-2 tape drives on Solaris hosts I
have seen a peak speed of around 42MB/s. On the whole, bigasm does 
generally
represent a nice level of compression without going overboard.

On the second general question of "what speed have you obtained", the best
yet remains an LTO-1 tape drive which ran at around 98MB/s backing up 
heaps
of holey SQL databases...

Cheers,

Preston.

--
eBook coming soon, "Backup and Recovery, a Corporate Insurance Policy", a
must have policy advisor and environment evaluation toolkit for
administrators and managers running enterprise backup environments.

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