Re: low power server question

[Jim Noble <yahoo-groups@xxxxxxxxxxxxxxxxxx>]

On 12/02/2010 07:37, Robin Edwards wrote:
> 1: Some sort of UPS or battery device is needed that gets charged and
> sits between the x10 module and the server, correct?  What type of
> device would do the job?
>

You could use a UPS, but I doubt it would achieve what you're aiming for
though - I'd be surprised if a UPS didn't add at least 20W to the load,
and there would be inefficiencies in the power conversion and storage.
You'd probably end up consuming >3x the power for 1/3 of the time.

If you used a DC power supply for the server, you could feed it from a
large battery though. For a 20W load running for 16 hours, you'd need
320Wh of battery capacity, which is only about 30Ah (absolute minimum).
There would still be /some/ inefficiencies though...

It's a shame there are no ATX power supplies with a UPS function (ie
battery connection on the DC side) readily available...

Jim


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