5 Jan
2004
5 Jan
'04
5:41 p.m.
Still, an RZ28 would be a better choice for a 4GB drive. I've never even heard of a
RZ74, but I assume it's a full height 5 1/4" model, which translates to more
power, and noise than a RZ28. Moving my PDP-11/73 in a BA123 from full height 5 1/4"
drives to 3.5"x1" drives made a large difference in the amount of noise it
makes, in addition to cutting down on the amount of power that it pulls.
Zane
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.
--
--
| Zane H. Healy | UNIX Systems Administrator |
| healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast |
| | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
> 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.