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OpenVMS Hobbyist Program | Alpha Systems Forums | Alpha Hardware Forum
Author DEC cpu/system Fan monitoring, RPM...
cmethot
Member

User Avatar

Posts: 23
Location: Calgary, Canada
Joined: 13.06.08
Posted on August 14 2012 12:58
Hey,
Is anybody "crack down" the monitoring signal on Alpha server cpu fans?

A lot of people tried to put stock, generic cpu fan on their alpha cpu card without any luck. the monitoring line(3rd pin, blue or gray wire) is most likely different on DEC specific fans than generic

Leaving little option then buying:
"Refurbish",
"Dustoff",
"Used",
"Like new",
"Reconditions",
Fans from 3rd vendor at high price..

An used fan, will always be an used fan..
Those fans are so small, that ball bearing, sleeve, shaft wear off and cannot be really "reconditions".

There are only a handfull of standard for fan monitoring, (RPM, Temperature, Cycle/4...)
But it looks like DEC happilly stay away from those for their own reason (??---$)...

Example :
DEC P/N 12-24701-34 OR 12-49995-01 (P/N seem interchangeable)
OEM P/N: Shicoh ICFAN 0610-12DV --> last letter “V” seem to be specifict to DEC
DELTA ELEC, AFB0612HA –S164 same for the –S164



So my question (again)

Is anybody "crack down" the monitoring signal on Alpha server cpu fans?

Or found a sources for “NEW” at reasonable price?


Claude
Author RE: DEC cpu/system Fan monitoring, RPM...
abrsvc
Member

Posts: 108
Joined: 12.03.10
Posted on August 15 2012 02:29
I will assume that hte fan in question is for a DS10?

I have not yet found any replacement that will work. Most won't fit onto the heatsink properly. I refuse to spend $100 for a fan that should cost less than $10. I was able to acquire another unit with multiple spare parts rather than spend rediculous money for just a fan. I might suggest the same for you. DS10s are available for short money on Ebay. BTW: In the last 10 years with 6 DS10s in production, only 1 has failed and that was due to a bad fan. Not a bad track record...

Dan
Author RE: DEC cpu/system Fan monitoring, RPM...
cmethot
Member

User Avatar

Posts: 23
Location: Calgary, Canada
Joined: 13.06.08
Posted on August 15 2012 05:02
I will hook a DEC fan to a scope today and compare it to a "generic' one to see the difference..
Author RE: DEC cpu/system Fan monitoring, RPM...
R Price
Member

Posts: 36
Location: Canada
Joined: 09.12.10
Posted on August 15 2012 05:13
The fan on my DS10 was pretty noisy when I acquired it. The bolt pattern on mine is the same as a standard 80 mm fan, though the OE fan was thinner than any I had on hand.

I replaced it with a random fan from my spare parts collection, a Datech DB9733-12HHBTL. It sucks air up through the heat sink and exhausts it out the back of the case. I had to switch the wire positions on the plug and trim the exhaust end of the shroud but it works very well and is surprisingly quiet.
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malmberg
August 04 2022
No more VAX hobbyist licenses. Community licenses for Alpha/IA64/X86_64 VMS Software Inc. Commercial VMS software licenses for VAX available from HPE.

ozboomer
July 20 2022
Just re-visiting.. No more hobbyist licenses? Is that from vmssoftware.com, no 'community' licenses?

valdirfranco
July 01 2022
No more hobbyist license...sad

mister_wavey
February 12 2022
I recall that the disks failed on the public access VMS systems that included Fafner

parwezw
January 03 2022
Anyone know what happened to FAFNER.DYNDS.ORG? I had a hobbyist account here but can longer access the site.

gtackett
October 27 2021
Make that DECdfs _2.1A_ for Vax

gtackett
October 27 2021
I'm looking for DECdfs V2.4A kit for VAX. Asking here just in case anyone is still listening.

MarkRLV
September 17 2021
At one time, didn't this web site have a job board? I would love to use my legacy skills one last time in my career.

malmberg
January 18 2021
New Hobbyist PAKs for VAX/VMS are no longer available according to reports. Only commercial licenses are reported to be for sale from HPE

dfilip
January 16 2021
Can someone please point me to hobbyist license pak? I'm looking for VAX/VMS 7.1, DECnet Phase IV, and UCX/TCPIP ... have the 7.1 media, need the license paks ... thanks!

Bart
October 16 2020
OpenVMS, and this website!

malmberg
September 05 2020
VSI community non-commercial licenses for AXP/IA64 are available now.

malmberg
September 05 2020
See the forum about licensing. Don't know if HPE hobby licenses still being issued. Commercial licenses still being sold.

silfox70
September 01 2020
I need the license for OpenVMS7.3. Where can I find them?

malmberg
August 29 2020
Eisner, which is currently being moved, got an SSH update and the keys were updated to more modern encryption standards.

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