On 09/25/2012 11:17 AM, Konstantin Khomoutov wrote:
> 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.
>

No, I mean, there's slow and there's __SLOW__.  He seemed to be 
indicating that it was unacceptably slow.  I understand it's not optimal.

Stephen
-- 
Stephen Thompson               Berkeley Seismological Laboratory
stephen AT seismo.berkeley DOT edu    215 McCone Hall # 4760
404.538.7077 (phone)           University of California, Berkeley
510.643.5811 (fax)             Berkeley, CA 94720-4760

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