From owner-freebsd-questions@FreeBSD.ORG Wed Aug 11 15:52:21 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 AC4DA106566B for ; Wed, 11 Aug 2010 15:52:21 +0000 (UTC) (envelope-from ryan.coleman@cwis.biz) Received: from qmta12.emeryville.ca.mail.comcast.net (qmta12.emeryville.ca.mail.comcast.net [76.96.27.227]) by mx1.freebsd.org (Postfix) with ESMTP id 9793A8FC0A for ; Wed, 11 Aug 2010 15:52:21 +0000 (UTC) Received: from omta03.emeryville.ca.mail.comcast.net ([76.96.30.27]) by qmta12.emeryville.ca.mail.comcast.net with comcast id t0Q51e0040b6N64AC3sMjZ; Wed, 11 Aug 2010 15:52:21 +0000 Received: from [192.168.1.172] ([76.113.215.212]) by omta03.emeryville.ca.mail.comcast.net with comcast id t3rw1e00L4bXtdG8P3sKxh; Wed, 11 Aug 2010 15:52:20 +0000 From: Ryan Coleman Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Date: Wed, 11 Aug 2010 10:51:56 -0500 Message-Id: To: User Questions Mime-Version: 1.0 (Apple Message framework v1081) X-Mailer: Apple Mail (2.1081) Subject: 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: Wed, 11 Aug 2010 15:52:21 -0000 I know that APC's website states this load on this unit results in this = runtime. However I do not trust these figures, typically, when coming from = smaller manufacturers than APC. I am looking at a 1400VA / 980W UPS to run a single server with a = usually not on monitor, a DSL modem and a simple switch. The server = should generate about 330W in power consumption, the monitor another = 50-100, the modem about 10 and the switch about another 10 watts. So: UPS: 1400VA Server: 400W (liberal estimate) Modem: 10W Switch: 10W Monitor: 75W Total: 495W According to a calculator if I enter all that information: http://www.csgnetwork.com/upssizecalc.html It says that it will use 693VA. Enter that into http://www.csgnetwork.com/batterylifecalc.html It requires Amps... 495W / 120 voltage =3D 4.125 amps... doesn't seem = right but... 192 hours... that's not right, right? -- Ryan=