Hardware compression not working

[RenC]

Tape Library: IBM 3584 partitioned into production and test environment

Operating System: Solaris 9, Windows 2003, HP-UX 11i

Netbackup: 5.1 mp3



Just upgraded from STK L700E LTO-1 library to a IBM 3584 LTO-2 library

All of a sudden tape compression is not working on any flavor media server, but only in production. Our test environment is compressing data at a hardware level just fine. Same OS, same NBU release, same Tape library, same tape drive drivers, same HBA cards, same firmware, same st.conf file on the Sun systems.


Can anyone think of what we might be missing that would cause the production environment not to be using hardware compression while the test environment is?

 

[jdespres]

I wonder if the atdd driver would help.....

 

[comtec17]

Hardware compression is on the hardware, there is no external software that turns this on or off, this is all on the library and the tape drives.

 

[Vela]

That's what I was thinking. You should have to turn on the hardware compression through the menu on the drive).

You should call STK or whoever supports your tape drives and ask what's going on.

Ryan