2 Dec
1999
2 Dec
'99
5:02 a.m.
--- healyzh(a)aracnet.com wrote:
So *THAT* is what an 11/725 is! <shudder>
Isn't the RC25 one of those drives
that rates about the same if not worse than a RD53? What I was refering to
is that VMS V5.1 is the last version to support it.
I still wonder why. The only thing I can think of is that either the driver
for the RC25 was removed or that VMS would no longer fit on an RC25 cartridge
as a boot volume. The drives used two platters, one fixed, one removable, 26Mb
each. You spun them up as a pair. When I got my 11/725 in 1988 ($4K), the
guys who shipped it didn't ship it with a removable cart (they also shipped
it sans grant cards and the terminator shoved all the way up the UNIBUS which
fried the PSU on power-on).
Hmmm, now I'm going to have to dig up one of my
catalogues and see if it's
the 11/725 or another system that I saw a picture of and thought it looked
cool. Could very well be, is the 11/725 a really tiny system that could go
beside a desk?
It's a little larger than a BA123 and about the same proportions. I wanted one
because it was the most affordable VAX at the time. I wish I still had it.
:-(
Fortunately for me, my boss paid the $4K, I only paid $1.5K for it.
-ethan
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2 Dec
2 Dec
5:28 a.m.
I still wonder why. The only thing I can think of is
that either the driver
for the RC25 was removed or that VMS would no longer fit on an RC25 cartridge
as a boot volume. The drives used two platters, one fixed, one removable,
26Mb
Don't know about as a boot disk, but the RC25 is still supported. The SPD
is kind of unclear though, says the minimum version for support is V6.1 and
that it's Q-Bus. Of course it says you need Unibus for RL02's.
I suspect it was a question of RAM. Looking at the configurations for the
11/725 and 11/730 it looks as if the 11/730 would hold at least a couple
more MB. V6.2 is the final verision to support the 11/730, 11/750, 11/751,
11/780, 11/782, 11/785, the VAXft's, and MV I, VS I. The last version to
support the MicroVAX II family is V7.2, I know that's because of the memory
limit.
each. You spun them up as a pair. When I got my
11/725 in 1988 ($4K), the
guys who shipped it didn't ship it with a removable cart (they also shipped
it sans grant cards and the terminator shoved all the way up the UNIBUS which
fried the PSU on power-on).
I'm wondering if it wouldn't be possible to replace the RC25 with a 3rd
Party SCSI controller. Though I'm not aware of any 11/725's in anyones
collection.
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
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