Linux newbie question:

what is the best way to find out if my tape drive problems are from samba 
or hardware?

I get the following on the server console:
smb_get_length: recv error=5
smb_request: result -5, setting invalid
smb_retry: new pid=621, generation=2 (now up to gen=5)

when I run the backup script, I get a different message:

st0:Error with sense data:[valid=0] Info fld=0x0, deferred st09:00:Sense 
key medium error
Additional sense indicates sequential positioning error
st0: Error on write filemark
st0:Error with sense data: Info fld=0x2800, current st09:00:Sense key 
medium error


Thanks,

Andy