[Scottish] parity errors on scsi tape drive

[Tam McLaughlin]

Hi, I have started to get the following intermittent error in the syslog when 
doing a backup to an external SCSI 20/40Gb DAT drive which has sometimes 
caused the server to hang.

kernel: st0: Error 70002 (sugg. bt 0x0, driver bt 0x0, host bt 0x7).
 Jun 24 20:30:27 moon 
kernel: (scsi1:A:6:0): parity error detected in Data-in phase. SEQADDR(0x1a3)

I have checked the external SCSI cable and the cable from the external SCSI
connector which is connected the the internal SCSI card. I have also checked
the termination which is set to automatic (IIRC) and the DAT drive has been 
terminated. 
The SCSI card is an adaptec AIC7899 ultra160 wide with an HP 20/40 Gb DAT 
drive running Linux Mandrake 8.1

I have searched around and not found much on this apart from the fact that it 
could be a cable problem.

Does anyone have any ideas or suggestions about this?