I'm using a Centos 6 system running BackupPC 3.3.0 to back up a small 
home network of mixed linux and windows PCs.  I recently added a windows 
7 (professional) box and installed cygwin 1.7.29 on it. I'm using rsync 
over an ssh tunnel to back it up.  I've got password-less ssh running, 
and rsync works fine, as long as the machine stays awake.  The problem 
is that windows puts itself to sleep before the backup can complete.

I've got wake-on-lan working, so I can wake the machine up if it starts 
out asleep, and I can run commands on it via ssh, so I can use 
powercfg.exe to (supposedly) set power options.  I have tried creating a 
power scheme on windows that disables sleeping and prevents spinning the 
disks down for long enough to do a back up.  I can use powercfg to 
switch to that power scheme -- I can log in and see the power scheme has 
changed -- but windows still goes back to sleep in a few minutes.

Does anybody know a way of telling windows not to sleep that will work 
if no user is logged in?

Thanks,
Ted


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