I'm powering five Arduinos and four LED strips (600 LEDs total) from an ATX power supply (CoolerMaster B2 Series 700W). Four Arduinos drive the four LED strips, and the fifth Arduino periodically cycles the power supply to keep the LED strip animations in sync.
The restart interval is approximately 2 minutes and will be running for about three hours per night over December (i.e. around 2700 restarts for the month).
Is it safe to be cycling the power supply this frequently? I'm a bit uneasy about leaving this to run whilst I'm not at home. I imagine my alternative would be to use relays or MOSFETs to cycle the Arduinos.