In a message dated 2/6/03 12:16:22 PM Pacific Standard Time,
[log in to unmask] writes:


> ...my HPe3000 KS959/300 is
> powered by a dual online UPS system with both battery and diesel generator
> backup the computer still detects these momentary power hits

I'd say that it is good that the HP-3000 detected and reported what other
boxes ignored.  It clearly sensed a power quality problem.  The other
hardware probably did as well but just doesn't have the OS smarts to report
on it.  Perhaps the reason why this outage was sensed is that the UPS is the
type that has to switch to the batteries when it senses an outage?  I
understand that some UPS units are designed to run all power thru the
batteries thus eliminating the momentary switchover.  The generator of course
would not kick in until some serious amount of time had passed and the
generator had time to startup.

Upgrading the UPS unit might be the correct way to go in order to eliminate
these messages but that might be a case of overkill considering that no harm
was done (correct?)  Another approach is to put a second redundant passthru
type UPS between the existing UPS and the HP-3000.  That would make sense if
you have some sort of very large central UPS unit in place now and it's
momentary switchover triggers the MPE messages.

Wayne Boyer
Cal-Logic

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