[MAINT] Short outage to re-power equipment

[Derek Atkins]

FYI, this went off off without a hitch.

-derek

Derek Atkins <warlord at mit.edu> writes:

> Some of you may or may not have noticed a short outage on Monday.  I had
> a short power outage (around 20 minutes) during which time the UPS took
> over and kept everything going.  Yay.  However, after power came back,
> the UPS didn't switch back to the line source, so it ran on battery
> until the batteries got low, at which point it started shedding load.
> Boo.  Even worse, I couldn't get the unit to reset, so I moved all the
> equipment over to line power to get it all running again.
>
> The good news is that I determined I have about 2 hours of backup  :-/
>
> After working with tech support Monday and Tuesday we determined that
> it's most likely the SNMP/Web Card that caused the unit to fail to
> return to line voltage once the power returned.  I've removed the card
> and reset the unit and have been testing it without load with success.
>
> So I want to make a short (30 minute) window to move the equipment back
> to the UPS.  I plan to do that this afternoon, around 3pm US/EDT (1900
> UTC).  It should be relatively quick as I shut down the systems, move
> the plugs, and power them on.
>
> Please let me know if you have any issues with this timing.
>
> -derek

-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
       warlord at MIT.EDU                        PGP key available