From owner-freebsd-questions@FreeBSD.ORG Thu Aug 12 19:57:51 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0DC621065694 for ; Thu, 12 Aug 2010 19:57:51 +0000 (UTC) (envelope-from ryan.coleman@cwis.biz) Received: from qmta10.emeryville.ca.mail.comcast.net (qmta10.emeryville.ca.mail.comcast.net [76.96.30.17]) by mx1.freebsd.org (Postfix) with ESMTP id E45E88FC1A for ; Thu, 12 Aug 2010 19:57:50 +0000 (UTC) Received: from omta20.emeryville.ca.mail.comcast.net ([76.96.30.87]) by qmta10.emeryville.ca.mail.comcast.net with comcast id tRpm1e0031smiN4AAXxqBD; Thu, 12 Aug 2010 19:57:50 +0000 Received: from [192.168.1.187] ([76.113.215.212]) by omta20.emeryville.ca.mail.comcast.net with comcast id tXxT1e00B4bXtdG8gXxpem; Thu, 12 Aug 2010 19:57:50 +0000 Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: Ryan Coleman In-Reply-To: <3FCE7BA6-E194-47B6-B109-8A5BA9B4EBEC@gull.us> Date: Thu, 12 Aug 2010 14:57:27 -0500 Content-Transfer-Encoding: quoted-printable Message-Id: References: <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> <4C6434E0.20801@hdk5.net> <3FCE7BA6-E194-47B6-B109-8A5BA9B4EBEC@gull.us> To: David Brodbeck X-Mailer: Apple Mail (2.1081) Cc: FreeBSD Questions Subject: Re: UPS question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Aug 2010 19:57:51 -0000 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=