[Info-vax] SBB power supplies failing slowly

[Phillip Helbig undress to reply]

I've seen this before, about a year ago, then it happened again in 
another BA356: Disks go offline and into mount verification, then come 
back after a minute or so.  The process repeats every ten minutes.  Of 
course, being VMS, the cluster continues and practically nothing else is 
affected, but it is annoying.

Replacing the power supply solves the problem.

I understand that a power supply can fail, but why is it failing in this 
manner?  Maybe overheating and shutting off then coming back on?

Being VMS, I dismounted the shadow-set members in the box with the flaky 
power supply.  Thanks to minicopy, things were quickly back to normal 
after replacing the power supply.  To do that, I turned off the box, 
replaced the power supply, and turned it back on.  The node whose 
system-disk shadow set was in the box didn't crash.  

I like VMS.

Now to find a few more replacement power supplies.  When collecting 
SBBs, I concentrated on disks, and I think that I have enough of them.  
Since the first power-supply failure wasn't until about a year ago, I 
hadn't explicitly looked for them, but fortunately got a few with BA356 
and other SBBs (mostly disks).

I need the Top Gun Blue (that's really the official colour!) 180W 
versions.  If anyone has any in Scandinavia, Germany, Benelux, England, 
Switzerland, Austria, Slovenia, or northwestern Croatia I could probably 
collect them sometime this year, probably before autumn.  Rest of the 
Balkan: next year.

I also plan to be in the southeast USA soon so would be happy to collect 
there as well.  (Apparently they run on 50 or 60 Hz and anything between 
100 and 240 volts.)

It's mainly the power supplies I need, but I'll take any blue SBBs.