[HamWAN PSDR] VOTE: $420 for a new Baldi UPS

[Nigel Vander Houwen]

I think this is a good price, and a good idea to move forward with, I'll
be working with the board to get a call scheduled for a vote.

Nigel

> Hello,
>
> We've known for a few months now that the UPS @ Baldi is bad.  It eats
> batteries at a high rate, so we don't wanna just buy another battery
> pack for it.  We also know that Baldi has many power events, even before
> this wind storm.  One of these outages was of just the right character
> to deadlock our server up there.  We had to physically go on site to
> reset it.  Yes, it locked up the iLO too! Another one of these outages
> (or surges) caused the death of Baldi-R1's power supply.  The site was
> dead until another physical trip replaced the router and its power supply.
>
> The perfect fit for this problem is something called an On-Line UPS.
> Unlike a normal UPS that kicks in when it senses power is down, an
> On-Line UPS does continuous AC->DC conversion of incoming power to
> charge the battery bank, and continuous DC->AC conversion from the
> battery bank to run the load.  Any fast events that might confuse a
> traditional relay-switching UPS, and allow dirty power to get to the
> load, are eliminated with the On-Line UPS design, because everything
> hits the battery bank first.  These types of UPSes are slightly more
> expensive than normal UPSes, but I did some digging to find the best
> deal here.
>
> The physical parts in this spending request are for a Tripp-Lite 2200VA
> UPS in new condition, a new set of batteries, and a network interface
> card.  I'm hesitant to post links to suppliers since the availability is
> limited.  The cost includes all shipping charges. The real price should
> be about $408.
>
> --Bart
>
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