They're doing some serious remodeling in our building which means we've lost power twice in the last week...usually after hours. The UPS does a fine job in starting a graceful shutdown, but I want the server to boot up after the utility power is returned.
How do I configure this? Couldn't find anything in the BIOS...or iDRAC6...or Win2008.
Within the BIOS, there is a setting specific to power recovery. In BIOS, go to System Security then AC Power Recovery. By default, it is set to last. In the case of a graceful shutdown, you can try to set to on.
If set to Last, the system returns to the last power state.
If set to On, the system turns on the system after power is restored.
If set to Off, the system remains off after power is restored.
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Thanks for your quick reply. We made the change you suggested, and set the restart delay to 60s. While this gets us closer it doesn't solve the problem. Here's what we're observing:
Our hypothesis is that the BIOS never "sees" a power loss because Windows shuts down gracefully and the UPS battery is never depleted.
To test this hypothesis:
It seems that the BIOS needs to see a complete power loss...which will never happen with a graceful shutdown.
What we really need is a BIOS setting that powers up the machine whenever a) it is off, and b) it has utility power. Is such a thing available and/or possible?
If you set the bios to "last", the last state as far as the bios is concerned is "off" as Windows did a graceful shutdown.
Have you tried setting the bios power setting to "on". This should force the server to power on any time it gets power (e.g. after a graceful shutdown and losing power completely and then power being restored).
There is one gotcha though; if power is restored before the battery was completely dead, the server may remain in an off state as the power never was completely lost.
Member since 2003
Thanks for your suggestion. We are using the "on" setting, but we are trying to get around the "gotcha" you've described. The server does a graceful shutdown...which removes almost all load from the UPS...so the UPS battery never depletes and the server is never restarted.
Any ideas on how we can get around this "gotcha"?
Switched PDU maybe? It would at least give you the ability to remotely cut power to the server after a clean shutdown.
Judging from the lack of responses, I'd say there probably isn't a way to do this w/o buying extra hardware.
Member since 2003