OK, what IS Harmonics? Randall's idea looks like a runner as two new UPS devices for the network servers appeared recently so I am investigating. I eventualy found a brief overview on UPS in Communicator 5 (It would help if I checked the whole web box when doing my searches) On Tue, 5 Sep 2000 12:19:07 -0700, Larry Barnes <[log in to unmask]> wrote: >Randall Davis wrote: > >> I don't know if this is applicable to your situation, but if you have a >> room covering UPS, then you can get into a situation where the room UPS and >> the HP3000 UPS can interfere with each other (harmonics?). In some cases, >> this will cause the UPS on the HP3000 to alternate between battery power >> and A/C power. Eventually, the battery on the HP UPS will deteriorate to >> the point where it can no longer supply adequate power. I saw this >> situation recently, and was able to remove the HP UPS before it caused an >> outage. > Jim Phillips >> I, also, would be interested in these items. If anyone has any info, >> please >> post to the list or copy me as well. HP doesn't seem to be too interested >> in the UPS's anymore, having sloughed off the support to a third-party...