VAX 11/730 modules

From: Christian Fandt <>
Date: Fri Jul 10 13:11:56 1998

At 11:23 10-07-98 -0400, you wrote:
>> >What does your 11/730 cabinet look like, then? Mine is a 10.5" box with
>> >the backplane standing vertically in the middle. PSU on the right, cards
>> >go in from the left. There's no room in mine for an extra backplane.
>Mine too. I think it is officially called a 11/730Z

The model designation of mine is 11/750-CA. Do either of these model
numbers mean anything to anybody out there?
>> 10.5"box? b/p standing vertical? PSU on right? Whoa, that must be something
>> different in a VAX 11/730.
>> Look at this URL for a picture of my 730:
>> It's a Japaneese page, but there's some English text *and* a photo of my
>> 730.
>I wish I could get Japanese support working for Netscape 4.03 under X on

Me too, but I don't know Japanese! <g>

>my Solaris box. :-( I saw the picture. I have never seen that model
>of 11/730 up close. It looks kind of like a miniature 11/750. I would

That is a good way to describe it. It's the same height as the 750 setting
next to it, only narrow like the cabinets that RL's, TU80s, etc. can reside

>suppose that there is a BA-11 inside with a 11/730 backplane and some
>DD-11DK's, no? If you forego the IDC for Unibus disks, yours looks like

Yes. Only one DD11-DK is called out (see earlier mention of this fact in
the first msg of this thread.)

>a nicer design. Perhaps that's what they did for later units. The

A couple of dates inside the unit place mine around middle of 1984.

BTW I'm still looking for a front and back door for this machine. Now that
anybody can see a picture in that Japanese DEC site, that's the box I'm
refering to.

>cabling on the older 11/730's is a nightmare to install (a co-worker
>did the one I have), but once in place, it's OK. I'm guessing that the
>in-cabinet cabling for your 11/730 is like the 11/24 or 8200 - a pile
>of cables snaking through some strain relief bars, ending in a wall of

Yes, I even have a 11/24 setting nearby to compare it with too. Too bad I
cannot keep either the 750 or /24. No room, dang it! BTW: the /24's cabinet
is the same height and width as the 750.

>I/O plates. Can you put any additional stuff in that cabinet, or is
>it all cable run?

I think I can install another unit like an RL or tape drive. Have to check
depth first. That's the major part of my idea to try to make a working
system in the smallest footprint. I know the TS03 tape unit will fit since
it's not too deep. The various controller modules for the TS11 drive
control would fit into the DD11-DK backplane.

Hmmm, if I can find a SCSI module or something I wonder if a more modern
SCSI hard drive and tape unit (as in the types used in the PC world) could
be installed??? How about a TK50 tape and an RD-something HDD? Anything
w/larger capacity than TK50 in that physical size? (I must find a good
primer for the more modern and smaller DEC HDD and tape units. Any pointers?)

Anyway, that arrangement would be small enough to mount into a 5.25" high
19" rack drawer with a PSU and fit inside the cabinet nicely underneath the
730's BA11 crate. This would make a single cabinet machine with the
smallest footprint possible! Yeah! I'm hep!

Anybody have any ideas?


I recall seeing mentioned somewhere a URL from Finland that has info and
archives for MicroVAXen. Anybody know of that and could pass the URL on to
me (and the list)?

Thanks for the help!
-- --
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA
Member of Antique Wireless Association
Received on Fri Jul 10 1998 - 13:11:56 BST

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