> On Feb 18, 2016, at 6:59 AM, Cejka Rudolf <cej...@fit.vutbr.cz> wrote:
>
> Dan Langille wrote (2016/02/17):
>> Writing 334GB to tape takes about 13 minutes.
>
> Hello,
> it means about 334*1024/(13*60) = 438.48 MB/s. Do you really have
> so fast tape write?
It's LTO-4 which should do 120MB/s
(https://en.wikipedia.org/wiki/Linear_Tape-Open
<https://en.wikipedia.org/wiki/Linear_Tape-Open>).
Let's look at it again:
15-Feb 22:59 tape01-sd JobId 231188: Committing spooled data to Volume
"000003L4". Despooling 333,554,921,501 bytes ...
16-Feb 00:12 tape01-sd JobId 231188: Despooling elapsed time = 01:13:23,
Transfer rate = 75.75 M Bytes/second
16-Feb 00:12 tape01-sd JobId 231188: Elapsed time=10:48:58, Transfer rate=8.557
M Bytes/second
16-Feb 00:12 tape01-sd JobId 231188: Sending spooled attrs to the Director.
Despooling 422,031,119 bytes ...
I missed an hour. It was 1 hour and 13 minutes or about 78MB/s
Thank you.
--
Dan Langille - BSDCan / PGCon
d...@langille.org
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