Hi all
I need some help regading poor compression (in fact you might consider it expansion) on backups.
Our environment: 2008 R2 server with BE 2010 R3 installed, connected to a Quantum Superloader 3 via SCSI.
Problem:
Until now it's been working fine but weekend backups of 600GB are now looking for a third tape, which is ridiculous.
We have the very same config above in other sites but can easily compress 600GB onto as little as one LTO3 tape.
It's as if compression has suddenly stopped working.
Testing:
Closer inspection and testing shows that we are only getting 200GB from the local server written to the tape.
This is despite the job rate being between 1700\2000MB per minute, which is the norm.
Other signs\symptoms:
Under compression in the job properties were are using "Hardware Compression if available, otherwise none"
Under windows device manager > tape drives > driver > we are using the Symantec drivers loaded using tapeinst.exe
Backup to disk is not affected.
Thanks
asymantecuser