The DECsystem 5400 does this as well. The fans are not the modern three
wire type with the RPM sensor, tho. (Not sure about on the 4000/xxx
series).
The same setup exists on the DECserver 5x0 series QBUS machines as well.
A Compaq field person told me once that the other fan is supposed to go
faster if one fails but we have had several fail on several DECserver
550's and I never noticed the audible pitch change.
The current VMS hobby licenses don't care about the version of VMS you're
running. Under the old hobby scheme I believe the licenses would work on
any version but you were only in compliance if you ran specific versions
of VMS.
On Sun, 22 Jul 2001, John Allain wrote:
> > Do all VAX-4000/200 machines make a loud fan noise when first
> > powered on, and then get much quieter?
>
> I can vouch for my 3400,3500 that they do as you describe. At first
> I thought it was some sort of problem with a current shortage, after
> some experience I acccepted it as normal. It could be that the system
> has fan speed in reserve for when it gets too hot, and this is just a POST
> of the fan subsystem. Don't know this for sure though.
snip
> and redoing an expired liscence. Anybody know if Montagar can
> permit the use of an older copy of VMS like OpenVMS 6.2?
--
Received on Sun Jul 22 2001 - 17:36:26 BST