I tried "the Open-E Data Storage Server DSS Bootable from CD" but failed during start. It returned a message saying it needs an x86-64 CPU but could only find a i686 CPU.
The CPU are a Intel Xeon P4 3,06 Ghz which seems to be a 32-bit only. Dont know if that explains the issue?

Knoppix and a slack USB boot CD seems to find the USB OK.