[PRad] prad raw data on tape

[Chao Peng]

Yes, I am replaying all the files, with 5 sigma level, size is reduced by a
factor of 40.
But the replaying process takes about 20 mins for 1 run, and getting file
from silo takes much longer time, so it may need several days to finish.

Best Regards,
Chao

On Wed, Jun 22, 2016 at 11:07 AM, <gasparan at jlab.org> wrote:

>
>   That is good,
>  Ashot
>
>
> > We certainly will keep all tapes, there is no question about it. But once
> > we have data rewritten with zero's suppressed we can move original tapes
> > from the silo to the shelf and free up the space on the silo.
> >
> > -Eugene
> >
> > ----- Original Message -----
> >> From: "Ashot Gasparian" <gasparan at jlab.org>
> >> To: "Eugene Pasyuk" <pasyuk at jlab.org>
> >> Cc: "prad" <prad at jlab.org>
> >> Sent: Wednesday, June 22, 2016 11:00:56 AM
> >> Subject: Re: [PRad] prad raw  data on tape
> >
> >> Hi Eugene,
> >>
> >> Yes, that is started by Chao. The question is, should we still keep
> >> the data in original form? I would keep it if it is all possible.
> >>
> >> Ashot
> >>
> >>
> >>> I got some statistics on the raw data written to tape.
> >>> There are 52 volumes in prad volume set. This is about 130 TB of raw
> >>> data
> >>> in 67200+ files.
> >>> The first thing to do would be to run zero suppression on all files.
> >>> This
> >>> will make dataset mach smaller and easier to manage.
> >>>
> >>> -Eugene
> >>> _______________________________________________
> >>> PRad mailing list
> >>> PRad at jlab.org
> >>> https://mailman.jlab.org/mailman/listinfo/prad
> >
>
>
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>



-- 
Chao Peng
Department of Physics
BOX 90305
Duke University
Durham, NC 27708
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