no compression and backup jobs erroring

Posted on 2007-09-28
Last Modified: 2013-11-14
Well, i got this server running windows server 2003 and we are using windows backup and a 36/72 tape drive.  the backup jobs are unsuccessful   do to size conflict, .. the size is over 36 but under 70 gigs... i need to know why this is happening or if theres something i need to do for the backup to compress
Question by:level9tech
    LVL 63

    Accepted Solution

    What program are you using for backup ?

    Have you tested with a small backup to see if it works OK ?

    You may need a program that knows how to turn on compression on your drive.

    I hope this helps !

    Author Comment

    We are using windows backup . the one that comes with server 2003

    Author Comment

    yess a smaller than 36 gig backup works fine just the 36+ gig fail
    LVL 63

    Expert Comment

    Check the help to see if it supports compression on the drive. I doubt it.

    You should see if the Tape manufacturer has any utilities to permanently turn on compression.

    [ih  I hope this helps !
    LVL 28

    Expert Comment

    Even if a tape drive supports compression, there are various reasons why you'll never get the 2:1 compression you would like.
    See the bottom part of article for reasons why compression will be lower than 2:1.

    Author Comment

    it is a

    36GB / 72GB
    4mm Data Tape
    Media Recognition System

    Digital Data Storage
    LVL 28

    Assisted Solution

    The spec-sheet at shows this model can do compression.
    NTBackup can set compression on.
    LVL 1

    Expert Comment

    Forced accept.

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