Bacula-users

Re: [Bacula-users] LTO3 tape capacity (variable?)

2012-09-28 08:11:07
Subject: Re: [Bacula-users] LTO3 tape capacity (variable?)
From: Alan Brown <ajb2 AT mssl.ucl.ac DOT uk>
To: Stephen Thompson <stephen AT seismo.berkeley DOT edu>
Date: Fri, 28 Sep 2012 13:08:30 +0100
On 28/09/12 02:38, Stephen Thompson wrote:

> Aren't these considered reasonable settings for LTO3?
>
>     Maximum block size = 262144           # 256kb
>     Maximum File Size = 2gb

Not really.

Change maximum file size to 10Gb and maximum block size to 2M

You _must_ set all open tapes to used and restart the storage daemon 
when changing the block size. Bacula can't cope with varying maximum 
sizes on a tape

Even with those changes, if you have a lot of small, incompressible 
files you'll see high tape overheads.

>
>
>
> thanks for the help!
> Stephen
>




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