Date: Thu, 12 Aug 2010 14:57:27 -0500 From: Ryan Coleman <ryan.coleman@cwis.biz> To: David Brodbeck <gull@gull.us> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: UPS question Message-ID: <F4F8309D-5130-4180-8336-BE41031F15FF@cwis.biz> In-Reply-To: <3FCE7BA6-E194-47B6-B109-8A5BA9B4EBEC@gull.us> References: <E1B44814-1433-4FBE-902B-BCC1944FBFCD@cwis.biz> <3135A83C-6FD9-4C3B-958F-11EE85221061@mac.com> <5304A319-0406-4510-B6B2-8FD609239FF9@cwis.biz> <43a2b1b16a03a5c58dfb7beaadd0c535.squirrel@www.gull.us> <3AB9F23A-B56C-4176-83C9-F248161066B9@cwis.biz> <cc009d380d95eaa9fee8328a6bbfe4fe.squirrel@www.gull.us> <4C6434E0.20801@hdk5.net> <D04386F5-C6C5-4C4C-BEE3-1F209FB85A49@cwis.biz> <3FCE7BA6-E194-47B6-B109-8A5BA9B4EBEC@gull.us>
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On Aug 12, 2010, at 2:49 PM, David Brodbeck wrote: >=20 > On Aug 12, 2010, at 12:40 PM, Ryan Coleman wrote: >> Yes. The downside comes from when the BIOS is told to turn on the = server at, say, 10pm and the power is still out... it starts the process = and runs out of battery mid-way through the boot before it gets the = chance to load the UPS controller. >=20 > You may want to think about using two UPS units -- a large one for = your server, and a smaller one for your network stack. This way you can = use UPS monitoring software (like NUT or PowerChute) to have the server = command its UPS to switch off when it's fully shut down. Then when = power comes back the server UPS will switch back on and the server will = boot back up, assuming you've set the BIOS to boot up on power recovery. = Some UPS units have the ability to set a power recovery delay to ensure = the battery has some charge before the server starts up, too. Great idea, I'll definitely keep that in mind. -- Ryan=
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