Re: Hall Effect for outlet strips

mroberds@xxxxxxxxxxxxxxxx writes:

>This may have come up before, but:

>Buy a regular outlet strip and n Kill-A-Watt single-plug watthour meters,
>about US$35 each. These meters don't have data output, but this can be
.....
>watthour meter with serial port, the Watts Up Pro. About US$125 each.

So skipping the ugly kludge; you're talking $125/port.

>I think some UPSes (APC Smart-UPS?) report the current load, even when
>they're not on battery. Maybe you could buy a cheap, small UPS for each
>server, and use its built-in monitoring. You're not after the UPS
>functionality - that is still provided by the big UPS and generator for
>the whole data center.

Look; space is money. The wasted space of the UPS's is just that...

>If the hotel owner can run their own code on the servers, you might be
>able to do it by proxy. Temporarily install a watthour meter and note

Does not fit the requirements.. They want data, not SWAGs...

>I've only bought co-lo space, and not sold it, but I wonder: is price so
>important and margin so low that the ability to charge a customer less
>if they use less electricity is that important?

When you consider each watt bites you twice -- once for the box, again
for the HVAC to remove the heat...

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