How much does power go for nowadays ?
Michael T. Halligan
michael at halligan.org
Tue Aug 30 11:50:32 PDT 2005
>
> It depends on how it is quoted.
>
> Is that with air conditioning costs? - Air conditioning can take up
> to twice the amount of power you use to suck out the heat on your load.
>
> Is that "breakable" or "usable" amps? - A typical drop into a cab
> will be one or more 20 amp circuits. For a 20 amp breaker, you can
> only use 2/3's of its rating or 16 amps. Many places will say you
> have a 20 amp circuit and give you a quote for "$16 per amp" and
> multiply this against the full 20 amp number. In this case $320 per
> 20 amp circuit. If they are figuring your use of 16 amps then the
> price will be $256. Also, most colos will assume you are pulling the
> full load when billing. A few Colos will have smart PDUs that can
> measure what you are using. You can try to arrange a deal where you
> only pay for what you are using.
>
> If you are leasing a bunch-o-racks, ask the colo to put a sub-tenet
> meter in for you that monitors your racks. This should be easy for
> the colo if you take up enough racks to fill your own breaker panel.
>
> BTW... As another data point, we (UnitedLayer) charges about $250 for
> a 20 amp drop.
As an interesting comparison, 110v @ 365main runs about $16 per amp,
and it is billed actual usage (They refuse to do fixed-price on power
since their costs go up and down). It's pretty consistent. A
customer of mine uses about 250 amps and gets just under a $4k per month
power bill. 365 has one heck of a power setup, I'm actually surprised at
how cheap their power is. Last month I used 30 amps of power, and
I believe my last power bill was about $480. In the winter it seems to
go down a bit.
AFAIK, datacenters in California aren't allowed to mark-up power due to
PUC regulation , so the price of power should be a good indication of
the quality of your datacenter, or at least of their power infrastructure.
Michael T. Halligan
Chief Technology Officer
-------------------
BitPusher, LLC
http://www.bitpusher.com/
1.888.9PUSHER
415.724.7998 (Mobile)
415.520.0876 (Fax)
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