Ahh, I forgot not everyone has a large ups with a Network management card in
it. I'm not sure if it can sent the Magic packet as suggested, I just
thought it would be a cool idea.
-----Original Message-----
From: Ed Pastore [mailto:email@hidden]
Sent: Tuesday, January 31, 2006 5:00 PM
To: Fred Deboard
Cc: 'Matt Rosenberg'; Mac OS X Mac OS X Server
Subject: Re: re-powering G5 xserve after power failure...
On Jan 31, 2006, at 12:29 PM, Fred Deboard wrote:
> Except that this does not have the server restart after power is
> restored.
> And could possibly cause the ups to go dry faster. What about
> having the
> server go to sleep when the UPS hits 40-50% battery life left and
> send a
> wake on lan packet to wake it up when power is restored? This I
> believe
> would give similar functionality to what he is requesting. The
> sleeping
> system should draw minimal power allowing the ups to keep it alive
> a lot
> longer then if it was running.
I like this idea... but how are you going to send the Wake-on-LAN
packet? As the name implies, it has to come from the LAN... even VPN
won't carry it. You could VPN/VNC or SSH into a computer on the LAN
and have it send the magic packet... except that computer has to be
on/awake to be reachable. Seems like a chicken and egg problem.
Best I can come up with is to have a laptop dedicated to it and hope
the outage doesn't overrun the laptop battery life (my last outage
was more than twice the max life-span of a PowerBook battery.)
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