Hi Folks,
Last Sunday six shelves in a netapp cabinet each lost power to one PSU. The other PSUs still had power, so no downtime. I investigated and the PDU in the cabinet that the PSUs are plugged into was powered off, i.e., the switch was in the "off" position. I flipped the switch and everything went back to normal. The PDU is plugged into its own 240V circuit. The same thing happened to us several months ago, but I can't remember if it was the same PDU.
I am very confident that when this happened, no one was anywhere near that cabinet (or even in the room). This was definitely "spontaneous". Has anyone heard of a netapp cabinet PSU switch flipping itself to "off" ? Does it behave like a breaker if there is a surge? I'm trying to remember if the "off" position is down. Could the switch be faulty and get flipped by gravity and vibration?
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support