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Backup problems with sbs2003

Hi Can anyone help,
Backup problems with an Sbs2003 server using its native backup,
Error as below

Backup started on 15/08/2007 at 23:05.
The requested media failed to mount. The operation was aborted.
The operation was ended.
Backup completed on 16/08/2007 at 04:09.
Directories: 6289
Files: 54478
Bytes: 26,834,055,120
Time: 5 hours, 4 minutes, and 19 seconds

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In the hardware list its lists the tape drive as a Benchmark Dlt1 vs80
The tapes we use are Maxwell dlt iv 40/80

Drive c: has used 32,5 Gb and the mailboxes are only using 2 Gb
Backup works fine if i run ntbackup and just back our 4 Gb data folder,

So it appears to be a tape space problem!
Any advice is appreciated
Mark

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Glenn Abelson

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shbs1

ASKER

Thanks for the comment but i thought it was a hardware compression and it appears the backup is below 40Gb, Unsure about block size . i was told only to trust the lower figure of 40/80 . any advise on compression on these drives using sbs2003 native backup software?

Glenn Abelson

Can't help much with native backup.

I have had sooo many people get this wrong.

If the drive says 40/80 that means you can get and SEE up to 80 gb of compressed data on your tape.

I back up 120 gb of uncompressed data to a 35/70 tape every night.
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Try creating separate backups...the first one overwrites, the next two append.