On Thu, Mar 6, 2008 at 10:57 AM, Ames Matthew B <[EMAIL PROTECTED]> wrote: > ... UPS drops to say 20% remaining, it control shuts down your server ... > ... What will make the UPS start to supply power again?
The APC Smart-UPS lines has an EEPROM setting that controls how long the UPS waits. You've got options for something like 10%, 50%, or 90% minimum battery charge before output power is turned back on. I expect similar UPSes from other vendors have similar options. > How do you turn the server back on, because it was shutdown cleanly the > "restore last power state" in the BIOS won't work, although maybe "always > on" might come up trumps. Exactly. That's what that BIOS option is for. > - How do you get multiple servers back up if running from one UPS? Same way you do just one server; set the BIOS to "Power On on AC Restored". Service ordering can be a problem if you've got services which don't cope well with having needed server up and that host boots faster than the one it depends on. I'd say the best way to address that kind of issue is to have the service not blindly auto start, but instead find some way to test availability of what it needs, and start the service manually once the prerequisite comes up. -- Ben ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
