[AusNOG] Power audit

[Mark Newton]

Ethernet-readable per-circuit kWh meters are readily available. Essential if you're operating a datacentre that bills for power, because you can inject their output straight into your billing system.

   - mark

On 04/06/2013, at 7:45 PM, Robert Hudson <hudrob at gmail.com> wrote:

> Are you after long term monitoring, or point in time?
> Clamp ammeters may be of assistance in determining load at a given time, but they cant be relied upon for high accuracy. They do meet your requirement to not power stuff down though.
> 
> Frankly, I am surprised that sub-metering at the load side (ie close to the rack) isn't done more frequently in data centres, as this would allow accurate metering and easily sharable data to prove/disprove power consumption claims.
> 
> On 04/06/2013 7:15 PM, "Alastair Waddell" <awaddell at legion.com.au> wrote:
>> Hi All,
>> 
>> Warning: much ignorance about all things power related.
>> 
>> I'm wondering if I can commission a power audit of a rack-load of gear.
>> 
>> Who might provide such a service?
>> Can it be done without powering down?
>> 
>> ie Power person attaches something around each AC cord and reports amps drawn. The sum should approximate what my provider bills which would address concern #1 and the individual results should let me identify any miscreant device which would address concern #2
>> 
>> 
>> 
>> Regards,
>> --
>> Alastair Waddell
>> Legion Internet
>> Australia
>> 
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