4 Jan
2004
4 Jan
'04
3:58 p.m.
I'm finally starting to look at my options for putting together some of my
DEC gear into complete refurbed systems. I was thinking of using an RA81
drive with my 11/45. However, best as I can eyeball it, the RA81 drive won't
fit into the H960 rack depth-wise (at least, with a proper back door on it
like mine has - and I want it to be able to close). The RA81 drives I have
are in a tall white corp cabinet, except two are in another H960 rack (which
has no back door). From looking at those two, I don't think a back door (on
my other 960 rack) would close (the two RA81's in the current 960 without
the back door looks like - ummm an amateur job).
Can someone confirm or deny, before I start going to the grief of racking
heavy drives & such?
Was also wrestling with the idea of whether to put an 11/34 into a
mid-height corp cab, or an H960. Which is more authentic, or are they both?
I don't recall seeing 34's in white corp cabs. If I did that, it would
probably use RL02's. I forget the disk requirements for a reasonable
RT11/TSX+ system, I think two RL02's may be cutting it close. Any advice?
Regards,
Jay West
4 Jan
4 Jan
4:31 p.m.
probably use RL02's. I forget the disk requirements
for a reasonable
RT11/TSX+ system, I think two RL02's may be cutting it close. Any advice?
Two RL02's is plenty big for RT-11 & TSX+, you can fit both on one RL02, and have
the other RL02 for something else.
Zane
--
--
| 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/ |
4:41 p.m.
Jay West wrote:
[Snip]
Can someone confirm or deny, before I start going to the grief of racking
heavy drives & such?
Jerome Fine replies:
Sorry, I don't use any Unibus hardware - TOO HEAVY!!
Was also wrestling with the idea of whether to put an
11/34 into a
mid-height corp cab, or an H960. Which is more authentic, or are they both?
I don't recall seeing 34's in white corp cabs. If I did that, it would
probably use RL02's. I forget the disk requirements for a reasonable
RT11/TSX+ system, I think two RL02's may be cutting it close. Any advice?
It depends on what you are doing. Most production
RT-11 / TSX-PLUS systems will be comfortable with
one RL02, but at least a few will require MUCH more.
Every system has its own requirements.
MUCH more important is how you are going to get
files to / from the RL02 media and at what speed.
Backup is also important. So if you are an RL02
ONLY system, then you will want a second RL02
to make backup copies.
My preference these days is a SCSI based system.
While the host adapters are still high in price, once
you have one, the cost of a SCSI drive is very low.
In my case with a Qbus system, I use a Sony SMO
S-501 drive as both an interchange media and a
backup media. This eliminates the need for ethernet.
Sincerely yours,
Jerome Fine
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'at' with the four digits of the current year.
4:47 p.m.
As you point out, all the 11/34 photos I have seen were in H960's. Of the
UNIBUS machines, I recall only the 11/60 in a "corporate cabinet", though I
suppose other later machines may have been in them as well.
RT-11 (without TSX) would fit comfortably on an RK05. I can't imagine
you'd need more than an RL02 even with TSX+.
Jay Jaeger
At 08:58 PM 1/4/2004 -0600, Jay West wrote:
I'm finally starting to look at my options for
putting together some of my
DEC gear into complete refurbed systems. I was thinking of using an RA81
drive with my 11/45. However, best as I can eyeball it, the RA81 drive won't
fit into the H960 rack depth-wise (at least, with a proper back door on it
like mine has - and I want it to be able to close). The RA81 drives I have
are in a tall white corp cabinet, except two are in another H960 rack (which
has no back door). From looking at those two, I don't think a back door (on
my other 960 rack) would close (the two RA81's in the current 960 without
the back door looks like - ummm an amateur job).
Can someone confirm or deny, before I start going to the grief of racking
heavy drives & such?
Was also wrestling with the idea of whether to put an 11/34 into a
mid-height corp cab, or an H960. Which is more authentic, or are they both?
I don't recall seeing 34's in white corp cabs. If I did that, it would
probably use RL02's. I forget the disk requirements for a reasonable
RT11/TSX+ system, I think two RL02's may be cutting it close. Any advice?
Regards,
Jay West
---
Jay R. Jaeger The Computer Collection
cube1(a)charter.net
4:50 p.m.
I think what Jay West means by the "Corporate Cabinet" are the racks that are
about 4' foot high. Systems that were in these racks include the /44, /84, and /94.
I honestly can't comment on what would be typical for a /34. Wasn't the /60 in a
dual-width rack along the lines of a VAX-11/750?
Zane
As you point out, all the 11/34 photos I have seen were
in H960's. Of the UNIBUS machines, I recall only the 11/60 in a "corporate
cabinet", though I suppose other later machines may have been in them as well.
RT-11 (without TSX) would fit comfortably on an RK05. I can't imagine you'd need
more than an RL02 even with TSX+.
Jay Jaeger
At 08:58 PM 1/4/2004 -0600, Jay West wrote:
--
--
| 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'm finally starting to look at my options for
putting together some of my
DEC gear into complete refurbed systems. I was thinking of using an RA81
drive with my 11/45. However, best as I can eyeball it, the RA81 drive won't
fit into the H960 rack depth-wise (at least, with a proper back door on it
like mine has - and I want it to be able to close). The RA81 drives I have
are in a tall white corp cabinet, except two are in another H960 rack (which
has no back door). From looking at those two, I don't think a back door (on
my other 960 rack) would close (the two RA81's in the current 960 without
the back door looks like - ummm an amateur job).
Can someone confirm or deny, before I start going to the grief of racking
heavy drives & such?
Was also wrestling with the idea of whether to put an 11/34 into a
mid-height corp cab, or an H960. Which is more authentic, or are they both?
I don't recall seeing 34's in white corp cabs. If I did that, it would
probably use RL02's. I forget the disk requirements for a reasonable
RT11/TSX+ system, I think two RL02's may be cutting it close. Any advice?
Regards,
Jay West
---
Jay R. Jaeger The Computer Collection
cube1(a)charter.net 
7:44 p.m.
Jay I believe the correct cab. for the 11/45 would be the h-960.
thanks ed sharpe
----- Original Message -----
From: "Jay West" <jwest(a)classiccmp.org>
To: <cctalk(a)classiccmp.org>
Sent: Sunday, January 04, 2004 7:58 PM
Subject: H960 rack question - ra81, 11/45 etc.
I'm finally starting to look at my options for
putting together some of my
DEC gear into complete refurbed systems. I was thinking of using an RA81
drive with my 11/45. However, best as I can eyeball it, the RA81 drive
won't
fit into the H960 rack depth-wise (at least, with a
proper back door on it
like mine has - and I want it to be able to close). The RA81 drives I have
are in a tall white corp cabinet, except two are in another H960 rack
(which
has no back door). From looking at those two, I
don't think a back door
(on
my other 960 rack) would close (the two RA81's in
the current 960 without
the back door looks like - ummm an amateur job).
Can someone confirm or deny, before I start going to the grief of racking
heavy drives & such?
Was also wrestling with the idea of whether to put an 11/34 into a
mid-height corp cab, or an H960. Which is more authentic, or are they
both?
I don't recall seeing 34's in white corp cabs.
If I did that, it would
probably use RL02's. I forget the disk requirements for a reasonable
RT11/TSX+ system, I think two RL02's may be cutting it close. Any advice?
Regards,
Jay West
5 Jan
5 Jan
7:01 a.m.
Jay,
my other 960 rack) would close (the two RA81's in
the current 960 without
the back door looks like - ummm an amateur job).
Not only do they not fit, they
also die quickly; try to locate
some RA9x or RA7x drives instead.
Was also wrestling with the idea of whether to put an
11/34 into a
mid-height corp cab, or an H960. Which is more authentic, or are they both?
H960.
Corp cabs were mostly done with 11/60s and the smaller systems,
which were often found in lab environments.
Fred
--
Fred N. van Kempen, DEC (Digital Equipment Corporation) Collector/Archivist
Visit the VAXlab Project at http://VAXlab.pdp11.nl/
Visit the Archives at http://www.pdp11.nl/
Email: waltje(a)pdp11.nl BUSSUM, THE NETHERLANDS / Mountain View, CA, USA
11 p.m.
On Mon, 5 Jan 2004, Fred N. van Kempen wrote:
[RA8x]
Not only do they not fit, they also die quickly; try
to locate
some RA9x or RA7x drives instead.
It's true, they don't fit. I have a RA80 in such a rack. But I can't
confirm they die quickly. This RA80 drive (actually I have two from the
same source) was in permanent use 24/7 from 1982 until Nov. 2000. Now it
is hooked to a 11/34 and used as system disk for 2.9BSD. And no problems
so far.
Christian
1:59 p.m.
On Mon, 2004-01-05 at 13:58, Jay West wrote:
I'm finally starting to look at my options for
putting together some of my
DEC gear into complete refurbed systems. I was thinking of using an RA81
drive with my 11/45. However, best as I can eyeball it, the RA81 drive won't
fit into the H960 rack depth-wise (at least, with a proper back door on it
like mine has - and I want it to be able to close). The RA81 drives I have
are in a tall white corp cabinet, except two are in another H960 rack (which
has no back door). From looking at those two, I don't think a back door (on
my other 960 rack) would close (the two RA81's in the current 960 without
the back door looks like - ummm an amateur job).
Can someone confirm or deny, before I start going to the grief of racking
heavy drives & such?
You just need the right sort of back door :-)
When I used to manage a "large" VAXcluster with 15 or so RA81s they were
mounted in H960 racks but the back doors were U shaped (when looked at
from above) to allow extra length for the RA81s.
Ah, the good old days....
--
Huw Davies | e-mail: Huw.Davies(a)kerberos.davies.net.au
Melbourne | "If soccer was meant to be played in the
Australia | air, the sky would be painted green"
7538
days inactive
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8 comments
8 participants
participants (8)
-
Christian.Corti＠studserv.uni-stuttgart.de -
cube1＠charter.net -
esharpe＠uswest.net -
healyzh＠aracnet.com -
huw.davies＠kerberos.davies.net.au -
jhfinexgs2＠compsys.to -
jwest＠classiccmp.org -
waltje＠pdp11.nl