From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 23 Jan 2003 13:37:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 23 Jan 2003 13:37:24 -0500 Received: from [81.2.122.30] ([81.2.122.30]:31237 "EHLO darkstar.example.net") by vger.kernel.org with ESMTP id ; Thu, 23 Jan 2003 13:37:23 -0500 From: John Bradford Message-Id: <200301231846.h0NIkwgu001811@darkstar.example.net> Subject: Re: Expand VM To: Herman@wirelessnetworksinc.com (Herman Oosthuysen) Date: Thu, 23 Jan 2003 18:46:58 +0000 (GMT) Cc: linux-kernel@vger.kernel.org In-Reply-To: <3E302D43.4070001@WirelessNetworksInc.com> from "Herman Oosthuysen" at Jan 23, 2003 10:58:27 AM X-Mailer: ELM [version 2.5 PL6] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > > 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.