From owner-freebsd-questions@FreeBSD.ORG Tue Oct 15 12:07:19 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 86D603A7 for ; Tue, 15 Oct 2013 12:07:19 +0000 (UTC) (envelope-from erich@alogt.com) Received: from alogt.com (alogt.com [69.36.191.58]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 5E6662BC5 for ; Tue, 15 Oct 2013 12:07:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=alogt.com; s=default; h=Content-Transfer-Encoding:Content-Type:Mime-Version:References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date; bh=fFG//k1U53t9tUDnteHPC4G+IUHqQonYNf4z9V0VRlQ=; b=AMGEPYZDZoFnI9KQp5NfEWyeKcHAMUblGqYArgDvPKeBHuMlpsXFJuiKKJ8LC4ezyra9bzmOAWCLx2WlmMMxwk+XdMLomTjBmXUwAZb6pLqTDVROr9lwAcX0/4XFjN2/58TbzB3bTc3xYWJfuE/H7B/2N6TGUSutcoL/vCcHsFU=; Received: from [182.0.242.251] (port=36035 helo=X220.ovitrap.com) by sl-508-2.slc.westdc.net with esmtpsa (SSLv3:DHE-RSA-AES128-SHA:128) (Exim 4.80.1) (envelope-from ) id 1VW3P9-001GwS-G9; Tue, 15 Oct 2013 06:07:17 -0600 Date: Tue, 15 Oct 2013 20:07:08 +0800 From: Erich Dollansky To: Frank Leonhardt Subject: Re: UPS buying suggestion Message-ID: <20131015200708.70057bba@X220.ovitrap.com> In-Reply-To: <525D225B.7050205@fjl.co.uk> References: <525D225B.7050205@fjl.co.uk> Organization: ALO Green Technologies X-Mailer: Claws Mail 3.9.2 (GTK+ 2.24.19; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - sl-508-2.slc.westdc.net X-AntiAbuse: Original Domain - freebsd.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - alogt.com X-Get-Message-Sender-Via: sl-508-2.slc.westdc.net: authenticated_id: erich@alogt.com X-Source: X-Source-Args: X-Source-Dir: Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Oct 2013 12:07:19 -0000 Hi, On Tue, 15 Oct 2013 12:09:15 +0100 Frank Leonhardt wrote: > On 15/10/2013 06:07, yudi v wrote: > > I am planning on buying an UPS to protect my HP microserver > > n40l, > > it will be running FreeBSD 9.2 RELEASE. > > I've been watching this thread with a bit of interest. For what it's this is good to hear. > As to the "compatibility", I do the myself. All I want it to do is > shut down gracefully if the power fails - nothing more. And this is > how I do it: > > All servers are, by definition, connected to the network. They can > ping equipment nearby (just do it from a shell script). If they ping this is real cool. You can then also control when to shutdown. This is the problem I have here. I will not shutdown for a few minutes of no power. > As to the "run time", there are lies, damn lies ans statistics. I > once tested a load of them for an article in PC Magazine and took Did you get always new devices or the devices these companies ship from magazine to magazine? Batteries age also by the number of charge-discharge cycles. > - if it's weedy it will overheat/burn out, but that takes time. You > pay more for sustained higher output currents, but may very well not > need them. As to the run-time, that's always down to the battery > capacity. Buy a new one every two years; don't wait for the load test > to fail. I only realise just now that my Ablerex has a much higher number of charge-discharge cycles then my APC. This could have aged it behind my expectations. I must check what kind of batteries are actually in there. Erich