Bacula-users

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

2012-09-25 14:19:47
Subject: Re: [Bacula-users] LTO3 tape capacity (variable?)
From: Konstantin Khomoutov <flatworm AT users.sourceforge DOT net>
To: Stephen Thompson <stephen AT seismo.berkeley DOT edu>
Date: Tue, 25 Sep 2012 22:17:29 +0400
On Tue, 25 Sep 2012 11:00:07 -0700
Stephen Thompson <stephen AT seismo.berkeley DOT edu> wrote:

> > 60Mb/s is _slow_ for LTO3. You need to take a serious look at what
> > you're using as stage disk and consider using a raid0 array of SSDs
> > in order to keep up.
> Why do you say that's slow when the max speed appears to be 80?
> http://en.wikipedia.org/wiki/Linear_Tape-Open
It's quite logical, that to not starve the consumer, the producer
should be at least as fast or faster, so you have to provide at least
80 Mb/s sustained read rate from your spooling media to be sure the
tape drive is kept busy.

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