We went ten years on a big Deltec 10 kVa unit without a problem and then we got a Powerware that led to 3 crashes during working hours on our PRODUCTION BOX! Even after one was replaced under warranty, the second one led to a crash during working hours. I partially blame IBM for changing the UPS serial port and dismissing all things UPS related as third party issue. We now have an APC because that what our Windoze servers run and they never seem to have a problem.
One piece of advice: Spend the extra $200 and get a SNMP interface for your UPS so you can monitor it from your desktop. You don't really want to power a six figure computer through a UPS that just has idiot lights.
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of James Lampert
Sent: Thursday, March 05, 2009 12:20 PM
To: Midrange Systems Technical Discussion
Subject: UPS trouble again. Mainly just venting, but responses are welcome.
The boss and I are both extremely irritated with Powerware: that UPS,
the newest we have, couldn't protect our development box from its own
battery failure in a self-test I initiated following the instructions in
the manual. Then, after I pulled the batteries in hopes of getting an
immediate replacement from a local supply house, when one would
reasonably expect it to recognize that the batteries were completely
absent, but line power hadn't even burped all morning, cut power to our
development box yet again.
The boss is again losing confidence in the whole UPS concept (not
surprising, since our UPSs have, over the past decade, collectively
caused more crashes than they've prevented), and while I understand that
the lack of a secondary pack is the main reason why this and our first
two APC UPSs are so vulnerable to battery trouble, and why our big APC
UPS with the secondary pack has yet to fail, I'm losing both the
ammunition and the inclination to defend the UPS concept.
--
James H. H. Lampert
Touchtone Corporation
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