On 03/06/2013 07:04 PM, John Wilson wrote:
  I think it'd be very difficult to find a modernish
(SCSI) 9-track drive
 that will do reverse parity.  So it'd take more than friendly drivers... 
How modernish?  A Qualstar with SCSI interface can be configured to use
external parity, for example.  I think those were 90s era drives.  Any
Pertec-interface drive brings parity out the interface in both directions.
Pertec/Cipher drives are quite common.
--Chuck