Automatic server startup / shutdown

I want my linux server to automatically shutdown at some specific time and start again based on time specified. The intention here is to save the power in night time. I know there are some options available to control the power used by monitor, HDD etc but have not analyzed how much power will be saved on that.
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gourav_jainAsked:
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Lee W, MVPConnect With a Mentor Technology and Business Process AdvisorCommented:
If your network card supports WoL (Wake on LAN) then configure the BIOS to do that and (of course, test) then I would probably suggest a small shell script running the shutdown command and run in a cron job should do the trick...
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rindiCommented:
Shutdown should be no problem, but getting the server to start automatically can cause problems. This depends on your BIOS. Some BIOS have the option to automatically start at a given time, but often that isn't available in servers.

If the server is from a big company like HP, then check if it already has, or can be upgraded with an ILO card (that's the HP/Compaq option, I don't know what other manufacturers have). This is a PCI card which is n fact a small PC complete with NIC, VGA, Keyboard and mouse input, and also an external power input. With these cards you can remotely control a server and turn it off and back on if necessary. This card uses a lot less power than the actual server.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
If you can have ONE system available, then Wake on LAN should do the trick:
More information:
http://en.wikipedia.org/wiki/Wake-on-LAN
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gourav_jainAuthor Commented:
Its good idea of WoL, I went through the idea of WoL and its good and working for me.
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