SiliconAddict said:BAD IDEA.....Windows [or] OS X. Doesn't matter. Modern OSs handled unexpected loss of power better then any previous OS but doing so still leaves the chance open for file corruption.
We had off and on power problems in our building last year.
I probably had about 20 times when the lab lost power, dropping a couple of hundred Linux and Windows systems each time.
I lost a handful of power supplies due these events, but no filesystems.
The journaling in NTFS and ext3 is pretty remarkable - I don't think twice about telneting into a power strip and dropping the power to a rack of systems.
Of course, you'll probably lose any unsaved *application* data unless the application is also journaling....