Fred may be talking about the RA74 (contrasts with the RZ74) here. -jea
RA's go to KDA50's doing SDI
RD's go to RQDX's doing MFM/RLL
RF's go to KFQSA's doing DSSI
RZ's go to KZQSA's doing SCSI
I believe some list members have attached the four disk types all to
a system at once and have succeeded, using a wide QBus cabinet.
> I wanted to revive my MicroVax II (BA23 cabinet I
think) and add
> RZ74 (4GB drive) to it. I am writing number from memory, perhaps
> I have made mistakes. Will this card on Ebay do the trick?
>
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2775848822&categ…
rd=1
> I believe this might be the easiest way to get
SCSI support
> on my machine, but perhaps this card is incompatible, or
> drive is too big?
Uhm... be *very* careful with connecting these drives,
and the
KDA50 controllers, to the BA23 power supply. Most of these
will *not* be able to handle them together, since the KDA50
controller (SDI to QBus) is a power-hungry monster.
Other than that, the drive would work just fine on the VAX.