again Quantum Superloader 3 with DLT tapes

Hi,

i have Quantum Superloader 3 with DLT tapes, which is connected to server HP DL380 G5 via SCSI Ultra320.
I found out that this combination doesn't work on Windows Server 2008, and the solution is:

- switch to Windows Server 2003, because it uses SCSI port drivers instead of StorPort driver as Windows Server 2008 and higher.
or
- switch to SCSI Ultra160

i have no different SCSI controller, then i decided to install Windows Server 2003 R2 x64 to server in the hope that it will work.
but what was my disappointment, that 2003 uses StorPort as well... Why? As a result BE doesn't see any Tapes.

Can i switch on Windows Server 2003 R2 x64 SCSI driver to SCSIport? if yes - how?
Probably i must install Windows Server 2003 x86?

Thank you!