I'm planning on setting up some kind of backup machine - probably some crusty old Dell desktop - to fetch database dumps from a webapp every night at midnight. There isn't a lot of data, but it's business-critical enough to keep a few copies of, and I don't really trust the web hosting folk with that. Besides, storing my own daily copies (delta's) would enable me to review old states of the database in case something goes Horribly Wrong.
Now for my question: Should I use a tool like rtcwake to sleep (suspend to RAM) this backup machine during the day and wake it up for a few minutes each night? Or will it cause wear on the disks, like turning it off completely would according to this answer?