Looks impossible UPS design to me. May I ask what UPS do you use? My APC smart UPS does has a timer, so PC can send command "shut the UPS down after 30 seconds" and then shutdown itself. -- View this message in context: http://www.nabble.com/Cutting-power-without-breaking-RAID-tf1864273.html#a5113118 Sent from the linux-raid forum at Nabble.com. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html