Re: AEM or Active Energy Manager - How does this play in an i world?

[Lukas Beeler <lukas.beeler@xxxxxxxxxxxxxxxx>]

On Mon, Feb 22, 2010 at 19:09,  <rob@xxxxxxxxx> wrote:
> Back to the facebook example, if you did decide to drop 500 servers, is
> doing it by cutting power from the PDU an acceptable way?

If they're stateless webservers, yes. Otherwise, no.

> ÂWouldn't it be
> better to do their equivalent of PWRDWNSYS? ÂOn the i I'd rather someone
> use PWRDWNSYS than to flip a breaker.

Yep - and if you shut down the machines in a controlled manner and
leave them on power, you'll be able to wake them up using Wake On LAN
or IPMI or something in that direction. However, that all sucks power.
Not significant, but standby power in servers isn't optimized. a Power
520 in Standby needs arounds 30 Watts (measured using the UPS in our
deployment LAN).