On Tue, Jun 16, 2009 at 1:05 PM, <[email protected]> wrote: > Is this in fact what "ATS" with dual-input does?
That is indeed what an ATS (automatic transfer switch) does. Aside from dual UPSes, I've also seen them used with a UPS input and a line input. That way, if the UPS commits suicide while line current is good enough, you don't go down. Of course, I've found most UPSes only fail when dealing with trauma due to line transients, so how good an idea this is, I dunno. > Any experience, etc as to how well these things work? Like anything else, a good product will work well, a bad product may not. Unfortunately, I can't make recommendations. I've never been involved in purchasing/maintaining any, but I did work at a facility that had some. Theirs worked. I also toured a facility that originally had a building-sized ATS that wasn't so good. Reportedly, when the UPS failed the ATS responding by catching on fire. > ... any other positive suggestions for dealing with this situation? I > checked, and our > particular Cisco switches do NOT allow a second power supply to be added. Sell the Cisco stuff and buy HP ProCurve gear? Cisco commands an excessively high price so you could prolly break even or even profit. And HP's lifetime warranty applies even on re-sold product. Just sayin'. :) -- Ben ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~
