On Tuesday 15 March 2005 11:26 am, Hongwei Li wrote: > Hi, > > Does anybody know if a good UPS with automatic safe-shuting-down and > startup features available for fc3 linux system? Basically, I need: > > 1. If there is a power outage, the UPS uses its battery to provide power > to the linux system (5 to 10 minutes, or longer). When the batter's power > goes down to some level, say 50%, and the AC power is still not back, the > UPS will shutdown the linux system normally to avoid any damage. I use an APC Back-UPS Pro 500 with a USB interface. The software included is for windows, however, a bit of looking around, I found a UPS howto (probably at Linux Document Project (www.tldp.org). It referenced a daemon "apcupsd", which seems to do the job. I was a little leery of the USB interface, but it seems to just work. Also check out http://www.apcupsd.com/. > 2. When the AC power comes back, it will recharge the UPS and when the > batter's level reaches 80 or 90%, it will start the linux system normally. > > Such ups is widely used in windows servers. Is it available for linux > systems? I don't recall any parameters for configuring power up thresholds. > I appreciate any information! Thanks! > > Hongwei Li
