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DrFranken wrote:
Personally I don't like this setup as it adds exposures and solves none.
1. There is absolutely nothing to be gained by having two mutually
redundant power supplies tied to the same source; it defeats the whole
purpose of having two mutually redundant power supplies.
2. We did NOT overload the UPS; we exhausted it. The power outage lasted
80 minutes, and because it was extremely localized, and at a time when
nobody was in the office, and there was no provision to send a distress
call, we did not find out about it until 20 hours later. Our UPS is
running at considerably less than full capacity.
3. We have had at least as many system crashes caused by UPS
malfunctions as we've had from actual power outages. In at least one
case, we had a system shutdown caused directly by a self-test failure
causing a false "emergency shutdown" signal to be sent.
--
JHHL
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