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
Are these the PDUs where the on/off switch is also the circuit breaker? Some have a seperate breaker and some have the combo breaker/switch.
My first instinct would be it is a bad breaker and is tripping off.
John
On Tue, Jan 15, 2013 at 07:11:09AM -0500, Steve Losen wrote:
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
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Steve Losen