Amanda-Users

Re: Ultrium-LTO tapetype

2003-02-07 08:16:56
Subject: Re: Ultrium-LTO tapetype
From: Joshua Baker-LePain <jlb17 AT duke DOT edu>
To: Benjamin Herbert <herbert AT isis.visi DOT com>
Date: Fri, 7 Feb 2003 07:46:59 -0500 (EST)
On Thu, 6 Feb 2003 at 2:38pm, Benjamin Herbert wrote

> Has anybody setup an Exabyte LTO tape drive with amanda?  If so how do
> you determine the "filemark" and "speed" entries in the tapetyep
> section.
> 
> Here is what I have so far:
> 
> define tapetype Ultrium-LTO {
>     comment "Exabyte LTO 100GB/200GB tape drive"
>     length 204800 mbytes
>     filemark ?
>     speed    ?
> }

You could run tapetype (amtapetype in 2.4.4b1) on it.  Make sure that 
hardware compression is *off* when you do this.

Note, also, that your length is probably rather optimistic.  I've rarely 
seen hardware compression get the 2X most manufacturers claim (and the 
2.6X Sony claims for AIT is truly laughable).  Only you know how 
compressible your data is, but if amanda keeps banging into EOT, you're 
going to want to back off on your length.

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


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