BE 2012 SP1 an HP LTO-6 no compression

Hi there,

we are running a new Library with LTO-6 Tape Drives from HP.

The storage tab in BE2012 says there is no compression. (1:1)

A drive test directly with a troubleshooting tool from HP gave me a compression ration from 2,61:1.

The compression in BE2012 is activated but not working...

How can i solve this issue? 

In my opinion there is a problem with the Symantec Tape Device driver? Is LTO-6 fully supported?

Thanks for your reply.

Cheers,

Sebastian