On 07/25/11 11:13, John Drescher wrote:
> On Mon, Jul 25, 2011 at 11:06 AM, Rickifer Barros
> <rickiferbar...@gmail.com> wrote:
>> I did this before....but, I didn't know how check in Debian if it really is
>> being compressed by the tape drive. The only thing that I got was the bacula
>> information about the SD and FD Written and the "mt" command in Linux don't
>> say me the real data size of the volume, so I chose to trust on the software
>> compression...YEAH I'm noob on Tape manipulation... :t
>>
>
> Just fill a tape with bacua. Then look at its status bacula will tell
> you how much data has been written to the tape. If this amount is >
> than the tape's native size compression is on. Remember the tape drive
> compresses data at 120 MB/s while software compression you will be
> lucky to get 1/10 that if you have a 4 GHz processor.
mt can both get and set options including compression. It's all in the
man page.
--
Phil Stracchino, CDK#2 DoD#299792458 ICBM: 43.5607, -71.355
ala...@caerllewys.net ala...@metrocast.net p...@co.ordinate.org
Renaissance Man, Unix ronin, Perl hacker, SQL wrangler, Free Stater
It's not the years, it's the mileage.
------------------------------------------------------------------------------
Storage Efficiency Calculator
This modeling tool is based on patent-pending intellectual property that
has been used successfully in hundreds of IBM storage optimization engage-
ments, worldwide. Store less, Store more with what you own, Move data to
the right place. Try It Now! http://www.accelacomm.com/jaw/sfnl/114/51427378/
_______________________________________________
Bacula-users mailing list
Bacula-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bacula-users
