I have here an ancient Irwin tape drive I decided to slap to my 5000/20
just to see if the tape drive works.  When I did that and checked the
configuration of the machine, this is what I got:

>>cnfg 3
 3: KN02-CA  DEC      V2.0g    TCF0  ( 16 MB)
                                     (DV -- d=8)
                                     (Sb: devs = 0)
            Name       Rev.       Vendor
            ==============================

                                     (FDI: 0)
                                     (enet: 08-00-2b-28-e3-bc)
                                     (SCSI = 7)
            ---------------------------------------------------
            DEV   PID                VID        REV    SCSI DEV
            ===== ================== ========== ====== ========
            rz0   MAVERICK 540S      QUANTUM    0901   DIR
            rz4   BACKUP             IRWIN      C002   DIR

        dcache( 64 KB), icache( 64 KB)
        mem( 0):  a0000000:a03fffff  (  4 MB)
        mem( 1):  a0400000:a07fffff  (  4 MB)
        mem( B):  a0800000:a0ffffff  (  8 MB)
>>
 
Wouldn't that mean that it sees the tape drive as a HD instead of a tape?
And, what must you do to support the drive through tar?  This is soemthing
I've really never done. =O