[HECnet] [Simh] Pi VAX Cluster

[Kari Uusim ki]

Pi seems to be very interesting. I have to order one as well.

Speaking about the Multia; I've been playing with my Multias (166 & 233MHz) and found out that the rumors about it having thermal problems is true, but only when there is an internal disk drive. When using external disks, they haven't been overheating even if running Windows NT 4 for several hours. I think the development team was too ambitious when they placed a 3,5" drive inside the already crowded case. A 2,5" disk might produce a little less heat, but it seems to be too much anyway.

I'll do more testing soon like running VMS, Digital Unix, using add-in PCI boards, etc. A few years ago I installed and booted VMS and DigitalUnix. So both can be run on the Multia even with DECwindows.

If running the Multia without the (vertical) stand might cause more thermal load inside the case. Haven't tried that so far, but that's worth testing as well.

If anyone is interested, I can send him more information.

Kari




On 14.6.2012 9:46, Boyanich, Alastair wrote:

I see. I would've imagined they were worse.   I do recall early in the
piece when the 233 ev45 (?) multia came out to replace the 166Mhz one, I
was called in when one went fut in the office at "Not Nice O'Clock"   as
one was left on with NT4.0 and the "Okay to power off" (or what ever the
message was) screen which had been shutdown by one of our punters and
the idle loop was a busy one which after many hours of max current draw
had allowed the machine to put in a credible impersonation of the
Chernobyl disaster and had emitted enough toxins to trip the fire alarm.

There was words spoken with the employee and a call to DEC who amazingly
replaced it on the quiet. I suspect they were worried about fires in
offices for a while.

Al.

-----Original Message-----
From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On
Behalf Of Mark Benson
Sent: Thursday, 14 June 2012 4:05 PM
To: hecnet at Update.UU.SE
Subject: Re: [HECnet] [Simh] Pi VAX Cluster


On 14 Jun 2012, at 00:45, Boyanich, Alastair wrote:

Someone needs to revive the VT525 case and make a DEC Multia again
with
an i7 in it. Should last about the same length of time thermally. :P

Al.

Actually, with the right fans, a Multia-shape/size case would be fine
with a n i7
in. They are very thermally efficient.

--

Mark Benson

http://DECtec.info
Twitter: @DECtecInfo
HECnet: STAR69::MARK

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