21 Jun
2009
21 Jun
'09
noon
Hi all.
I have a Vax 11/750 coming my way. It currently has a three RA81 disks
in a half-height rack. I feel that the RA81 takes up a little too much
room. I would rather run on as small disks as possible (physical size of
course). What options do I have? I believe that RA90 would work with
existing controllers and I could fit one or two of those into a rack I
already have.
Kind regards,
Pontus.
21 Jun
21 Jun
12:05 p.m.
On Jun 21, 2009, at 3:00 PM, Pontus wrote:
I have a Vax 11/750 coming my way. It currently has a
three RA81 disks
in a half-height rack. I feel that the RA81 takes up a little too much
room. I would rather run on as small disks as possible (physical
size of
course). What options do I have? I believe that RA90 would work with
existing controllers and I could fit one or two of those into a rack I
already have.
If it has RA81s, and no HSC, then it has a UDA50. Any RA-series
disks should work, even 5.25" ones like the RA7x series.
-Dave
--
Dave McGuire
Port Charlotte, FL
1:22 p.m.
Dave McGuire wrote:
On Jun 21, 2009, at 3:00 PM, Pontus wrote:
That is excellent, I believe I can get some RA72 and RA73 disks with the
11/750
Cheers,
Pontus.
I have a Vax 11/750 coming my way. It currently
has a three RA81 disks
in a half-height rack. I feel that the RA81 takes up a little too much
room. I would rather run on as small disks as possible (physical size of
course). What options do I have? I believe that RA90 would work with
existing controllers and I could fit one or two of those into a rack I
already have.
If it has RA81s, and no HSC, then it has a UDA50. Any RA-series
disks should work, even 5.25" ones like the RA7x series.
-Dave
17 Aug
17 Aug
11:20 a.m.
Pontus wrote:
Dave McGuire wrote:
I now have the 11/750 in my house (yay!), it was "fun" to carry up the
stairs.
Now, I just mounted the RA70 disks I got into their rack and dusted them
off. They are mounted four in box similar to the RA90 and has a small
front panel. I have only found the Pocket Reference Guide. So I'm
wondering: does anyone have a manual?
Alternatively, can anyone give me an introduction how to operate the
front panel. Can I run diagnostics like on the RA90 ?
kind regards,
Pontus.
On Jun 21, 2009, at 3:00 PM, Pontus wrote:
That is excellent, I believe I can get some RA72 and RA73 disks with the
11/750
Cheers,
Pontus.
I have a Vax 11/750 coming my way. It currently
has a three RA81 disks
in a half-height rack. I feel that the RA81 takes up a little too much
room. I would rather run on as small disks as possible (physical size of
course). What options do I have? I believe that RA90 would work with
existing controllers and I could fit one or two of those into a rack I
already have.
If it has RA81s, and no HSC, then it has a UDA50. Any RA-series
disks should work, even 5.25" ones like the RA7x series.
-Dave
12:08 p.m.
On Mon, Aug 17, 2009 at 2:20 PM, Pontus<pontus at update.uu.se> wrote:
I now have the 11/750 in my house (yay!), it was
"fun" to carry up the
stairs.
That must be a new use of the word "fun" of which I was previously unaware.
;-)
Now, I just mounted the RA70 disks I got into their
rack and dusted them
off. They are mounted four in box similar to the RA90 and has a small
front panel. I have only found the Pocket Reference Guide. So I'm
wondering: does anyone have a manual?
Alternatively, can anyone give me an introduction how to operate the
front panel. Can I run diagnostics like on the RA90 ?
I, too, would appreciate any documentation pointers or especially
"lessons learned" with RA7X drives. My former SDI experience was all
with RA81 drives (starting back when they were $24,000!) but I have a
couple of RA70s that I'd love to use either in a BA123 with either a
MicroVAX II or a KDJ11, or with my 8300/KDB50 or an 11/750/UDA50.
ISTR there were "internal" SDI cables that weren't as sturdy for
in-cabinet use. I only have external, heavy, black, rubberized SDI
cables. A pointer to where to acquire light-weight SDI cables would
be good to have.
Thanks,
-ethan
12:10 p.m.
cctalk-bounces at classiccmp.org wrote:
Now, I just mounted the RA70 disks I got into their
rack and
dusted them off. They are mounted four in box similar to the
RA90 and has a small front panel. I have only found the
Pocket Reference Guide. So I'm
wondering: does anyone have a manual?
I have this:
ora7xsm2.pdf "RA7x Disk Drive Service Manual"
I see it's not on Manx so I'll have to try and get it there soon.
I'll email it to you in the meantime if you want?
Antonio
12:32 p.m.
From: arcarlini at iee.org
To: cctalk at classiccmp.org
Subject: RE: Vax 11/750 disks
Date: Mon, 17 Aug 2009 20:10:46 +0100
cctalk-bounces at classiccmp.org wrote:
Just last week I downloaded the following documents:
- rsa7xpg2.pdf
- osa7xsmc.pdf
- osa7xugc.pdf
My VAX-11/750 has 2 RA81's and a Kennedy 9360 (IIRC, too lazy
to check). I want to replace one RA81 with a few RA72's, when
I find the time ... too busy with moving stuff.
My VAX-11/750 came with 2 UDA50's already installed, so I do
not have to worry about the issues when you want to install
a second UDA50 (I read that somewhere).
Check out the URL, it also has doc on RT11 and RSX11, but I
did not check that. There is a lot more to find ...!
- Henk.
Now, I just mounted the RA70 disks I got into
their rack and
dusted them off. They are mounted four in box similar to the
RA90 and has a small front panel. I have only found the
Pocket Reference Guide. So I'm
wondering: does anyone have a manual?
I have this:
ora7xsm2.pdf "RA7x Disk Drive Service Manual"
I see it's not on Manx so I'll have to try and get it there soon.
I'll email it to you in the meantime if you want?
Antonio
11:16 p.m.
On Mon, Aug 17, 2009 at 09:32:59PM +0200, Henk Gooijen wrote:
Just last week I downloaded the following documents:
- rsa7xpg2.pdf
- osa7xsmc.pdf
- osa7xugc.pdf
from http://www.computer.museum.uq.edu.au/documents.html
Thanks for the link, I'll check it out.
My VAX-11/750 has 2 RA81's and a Kennedy 9360
(IIRC, too lazy
to check). I want to replace one RA81 with a few RA72's, when
I find the time ... too busy with moving stuff.
I'm going back to where the 750 came from, and there is an RA81 disk
still there. It seems very bulky and heavy.. should I get it anyway?
Check out the URL, it also has doc on RT11 and RSX11,
but I
did not check that. There is a lot more to find ...!
Here I though bitsavers was the authorative source, apparently there is
more to find :)
Kind Regards,
Pontus.
18 Aug
18 Aug
11:36 a.m.
Date: Tue, 18 Aug 2009 08:16:12 +0200
From: pontus at Update.UU.SE
To: cctalk at classiccmp.org
Subject: Re: Vax 11/750 disks
I'm going back to where the 750 came from, and there is an RA81 disk
still there. It seems very bulky and heavy.. should I get it anyway?
Heavy? Yes, the RA81 weighs 67 kilos! If it is not too much, I would
get the drive (anybody wants a 16-bit RA81? :-)) hook it to the UDA50
and check the contents. Who knows what you find, perhaps VAX-11/750
diags. You can connect a VT220 to the drive (open it and locate the
DB-25 connector. Run the diagnostics. Maybe the drive is in better
shape than the RA81 you have. Swap and try to get a few euros for
the metal of the to-be-scrapped RA81. Or keep them both :-)
In the latter case, use the drive sequence cable, so that both drives
do not spin up at tyhe same time, but one after the other. Or switch
them on in sequence manually. Start-up current is> 10 Amps.
Here I though bitsavers was the authorative source,
apparently there
is more to find :)
If I need some doc which I do not have stashed somewhere, bitsavers is
my #1 spot to look for it. And I contributed a "few inches" too.
Kind Regards,
Pontus.
greetz,
- Henk.
noon
Henk Gooijen wrote:
Just last week I downloaded the following documents:
- rsa7xpg2.pdf
- osa7xsmc.pdf
- osa7xugc.pdf
from http://www.computer.museum.uq.edu.au/documents.html
I did not find those documents at that link, but I found:
- sax05ug1.pdf
Which was what I needed.
And in reply to your last post, you have convinced me. I will lug the
RA81 home :)
Kind regards,
Pontus.
21 Jun
21 Jun
10:04 p.m.
If your machine has CI, you can pick up HSJ controllers pretty readily, and they'll
work with StorageWorks shelves of common 4GB SCSI drives. Star couplers - an essential
part of the CI interconnect system - can be hard to come by these days, but I happen to
have a stash. :-) The HSJ is nice because you can do mirror sets, stripe sets and
incorporate other storage such as CDROM and tape. Cheers -- Ian
PS: congratulations on the acquisition!
________________________________________
From: cctalk-bounces at classiccmp.org [cctalk-bounces at classiccmp.org] On Behalf Of
Pontus [pontus at update.uu.se]
Sent: Sunday, June 21, 2009 12:00 PM
To: On-Topic and Off-Topic Posts
Subject: Vax 11/750 disks
Hi all.
I have a Vax 11/750 coming my way. It currently has a three RA81 disks
in a half-height rack. I feel that the RA81 takes up a little too much
room. I would rather run on as small disks as possible (physical size of
course). What options do I have? I believe that RA90 would work with
existing controllers and I could fit one or two of those into a rack I
already have.
Kind regards,
Pontus.
22 Jun
22 Jun
11:18 a.m.
On Jun 22, 2009, at 1:04 AM, Ian King wrote:
If your machine has CI, you can pick up HSJ
controllers pretty
readily, and they'll work with StorageWorks shelves of common 4GB
SCSI drives. Star couplers - an essential part of the CI
interconnect system - can be hard to come by these days, but I
happen to have a stash. :-) The HSJ is nice because you can do
mirror sets, stripe sets and incorporate other storage such as
CDROM and tape. Cheers -- Ian
Speaking of 11/750 CI interfaces...Does anyone have a spare one?
-Dave
--
Dave McGuire
Port Charlotte, FL
5375
days inactive
5433
days old
11 comments
6 participants
participants (6)
-
arcarlini＠iee.org -
ethan.dicks＠gmail.com -
henk.gooijen＠hotmail.com -
IanK＠vulcan.com -
mcguire＠neurotica.com -
pontus＠update.uu.se