🚀 go-pugleaf

In article <1991Aug2.163027.20372@atc.SP.Unisys.COM> mike@atc.SP.Unisys.COM (Mike Grenier) writes:
>Another example of IBM's approach to open system is to see what they
>did with the scsi interface on the RS6000.  Only IBM modified Exabyte
>tape units will work with the RS6000 - the scsi driver sends bad
>commands down the scsi bus that the Exabyte 8200 and 8500 tape drives
>don't understand unless they are running special IBM firmware in them.
>The scsi analyzer traces were previously posted to the comp.unix.aix
>newsgroup.

I seem to remember it being a bit more innocent than that with IBM
requiring special PROMS that add commands to report additional data to
be more inline with IBM's plans for standadrdized VPD data across all
SCSI devices. Note however that IBM has been bending over backwards to
get third party hard drives to work and that they went with an
established PC based bus in the RISC System/6000 line to make it easy
for third party addon manufacturers to develop for the PS/2s and RISC
System/6000 family simultaneously.

By the way Chantal Systems Corp. is expected to release a bunch of
third party device drivers for AIX 3.* later this year, including a
generic Exabyte driver.
--
+-----All Views Expressed Are My Own And Are Not Necessarily Shared By------+
+------------------------------My Employer----------------------------------+
+ Ronald S. Woan       woan@peyote.cactus.org or woan%austin@iinus1.ibm.com +
+ other email addresses             Prodigy: XTCR74A Compuserve: 73530,2537 +