Amanda-Users

Re: tapetape (not in faq-o-matic)

2006-05-25 10:55:02
Subject: Re: tapetape (not in faq-o-matic)
From: Brian Cuttler <brian AT wadsworth DOT org>
To: amanda-users AT amanda DOT org
Date: Thu, 25 May 2006 10:44:08 -0400
Jon,

On Thu, May 25, 2006 at 10:33:48AM -0400, Jon LaBadie wrote:
> Well, actually a little different.  I got my Ultrium 1 from ebay and
> like a kid with a new toy ran several tapetypes on it.  Three different
> physical tapes (two brands), one two times, and with 3 different block
> sizes, and a couple with and without compression on.
> 
> The thing that flabbergasted me was the absolute consistancy of the
> total blocks written (adjusted for block size).
> Two of your report lines were like mine:
> 
> > > > wrote 12386304 32Kb blocks in 189 files in 6539 seconds (short write)
> >     wrote 12386304 32Kb blocks in 189 files in 6487 seconds (short write)
> 
> Oh, I did some with a different scsi controller too as the first one I
> used was too low performance.  Same block count though.

Actually I'm now wondering how to keep the drive busy, what can be
done to feed it better. I'm pretty sure I'm going to need a second
work area as I add partitions but disk to tape speed might be too
slow for this drive. I just have to perform a number of dumps and
check the actual speed if its below the shoe-shine limit... what is
that for this drive anyway, with the noise in my computer room I'm
not certain that I'll be able to hear it if its in trouble.

                                                thanks,

                                                Brian
---
   Brian R Cuttler                 brian.cuttler AT wadsworth DOT org
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