SUMMARY: TZ88 on NSR writing only 16 GB

From: wander <wander_at_cptec.inpe.br>
Date: Tue, 16 Dec 1997 14:37:43 -0200

Ok,

Seems that someone sent to us the wrong cartridges.
Thanks to the following great people:

Paul Grant <paul.grant_at_kscl.com>
Martin.Blomdahl_at_network.combitech.se
"C.J.Bol" <bol_at_Axp1.IenD.wau.nl>
Jean-François Blanchet <JFBLANCHET_at_DGEQ.QC.CA>
alan_at_nabeth.cxo.dec.com
and Mitch Bertone (reproduced below)


>16 gig sounds pretty good considering you are using CompacTape III,
>which is rated at 10 gig normal / 20 gig compressed. To maximize your
>tape drive capacity, you need to be using CompacTape IV (black case)
>which is 20/40.
     
>Compression depends on lots of things, redundancy of data (repetition)
>of , or number of files.
     
>If a file has lots of repetition, or blanks, it is easily compressed,
>if not, maybe not much space savings. Also a file system that say 5
>gig of data in 20 files will take up less room on a tape than a file
>system of 5 gig of data with 200,000 small files, due to file headers
>and partly filled blocks, and "white space" between files.
     
>I suggest that you get the CompacTape IV, we routinely get 40-50 gigs
>of data on one 40 gig tape.
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Original Question:

Hi Managers,

We have a TL820 Jukebox with 3 drives TZ88 inside and using CompacTape
III media. This should be able to write 20/40 GB. The problem is that I
can't write more than 16 GB via NSR. Does anyone have any suggestion?

     

-- 
    ----------------------=======----------------------
    Wanderley O. Mendes	 	 
    Software Specialist		wander_at_cptec.inpe.br     
    Phone: 55-012-560-8432      Fax: 55-012-560-8435
    INPE/CPTEC - Cachoeira Paulista - Sao Paulo - Brazil 
    ----------------------=======----------------------
Received on Tue Dec 16 1997 - 17:35:19 NZDT

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