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On Fri, Jul 9, 2010 at 16:23, Burns, Bryan<Bryan_Burns@xxxxxxxxxxxx> wrote:
System utility power failed at 080920043022.And this is why we use:
* Two power supplies per server, each attached to a different UPS
* UPSes with NICs. Our programmers wrote implemented a program that
reacts to SNMP traps from the UPS, and only shut down the system if it
has received the appropriate trap from BOTH UPSes it's attached to
Of course, in real data center, there's no need for UPS notification,
because even if the utility fails, there's still the diesel engine.
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