Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 23 Jan 2003 14:30:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 23 Jan 2003 14:30:22 -0500 Received: from s142-179-222-244.ab.hsia.telus.net ([142.179.222.244]:41001 "EHLO bluetooth.WNI.AD") by vger.kernel.org with ESMTP id ; Thu, 23 Jan 2003 14:30:21 -0500 Message-ID: <3E304597.6090600@WirelessNetworksInc.com> Date: Thu, 23 Jan 2003 12:42:15 -0700 From: Herman Oosthuysen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2.1) Gecko/20021130 X-Accept-Language: en-us, en MIME-Version: 1.0 To: John Bradford CC: linux-kernel@vger.kernel.org Subject: Re: Expand VM References: <200301231846.h0NIkwgu001811@darkstar.example.net> In-Reply-To: <200301231846.h0NIkwgu001811@darkstar.example.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 23 Jan 2003 19:39:31.0665 (UTC) FILETIME=[2674D410:01C2C317] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org The trouble is that you will spend so much money on the power supply, that the product won't make economic sense. It would be better to just use a general purpose PC mother board, PSU and a UPS, since then, you get tremendous economy of scale. John Bradford wrote: >>>I've seen loads of solid state devices based on flash memory, but few >>>that are based on battery backed DRAM :-(. > > >>There is a good reason for that: Power consumption. >> >>A large SDRAM disk would require refresh logic etc. So you will end up >>with something closely resembling bad notebook PC. > > > I suppose it makes sense for portable devices, but would it really be > that bad for desktop/server use? I was only thinking of about a 24 > hour battery backup time - to keep the contents overnight, for > example. > > John. > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/