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Deep Sleep
Authored by: reverie on Dec 07, '01 03:42:43PM

Deep sleep is a low-power mode where the hard drive spins down, the monitor turns off, the fan turns off, and pretty much the only power consumption is going toward keeping the RAM alive. None of the programs can receive events, meaning that you can't remotely connect via the network or use an alarm program, among other things. There's supposed to be a signal that you can send remotely to get your computer to wake up, but Apple hasn't gotten this to work yet. This is the kind of sleep that you get whenever you hit the power button, use the shut down dialog, or select sleep from the apple menu.

The other kind of sleep is less deep--the hard drive spins down and monitors turn off, and other functions *may* be put to sleep, but network daemons and alarm programs will work. This is the kind of sleep you get when you check the "Wake for network administrative access" and then wait for your computer to put itself to sleep. I'm not entirely sure, but I think the machine will go into deep sleep if you don't have that box checked. The only reason this kind of fake "sleep" exists is because of the bug in network access that Apple hasn't yet resolved.

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