since 2 weeks ago i got a few tape drives that stopped compressing data when running backup.
Windows Server 2003 Std 32bit (backup server only)
Backup exec 12.5 loaded
HP ultirum 4 Scsi ( Firmware W25D )
Hp LTO4 tapes (brand new and exisiting tapes tested) compression 1.05:1(bad)
Hp Ultium 3 Scsi ( Firtmware D22D ) compressing fine 1.79:1
HP LTO 3 Tapes (still working fine)
any ideas why my LTO4 tape drive stopped compressing data all of the sudden. Only getting uncompressed amount of data on tape , 800gb uncompressed , 1.6tb *assuming 2:1 compression.
I thought it was the tapes so i tested a new one , still the same.
Tried Backup exec 2010R3 and still the same.
It worked a few weeks ago ? what changed? any ideas to fixing the issue?