From owner-freebsd-stable Tue May 2 3: 0:52 2000 Delivered-To: freebsd-stable@freebsd.org Received: from trinity.skynet.be (trinity.skynet.be [195.238.2.38]) by hub.freebsd.org (Postfix) with ESMTP id 1ED3537B602; Tue, 2 May 2000 03:00:48 -0700 (PDT) (envelope-from blk@skynet.be) Received: from [195.238.1.121] (brad.techos.skynet.be [195.238.1.121]) by trinity.skynet.be (Postfix) with ESMTP id C8B86180A1; Tue, 2 May 2000 12:00:38 +0200 (MET DST) Mime-Version: 1.0 X-Sender: blk@pop.skynet.be Message-Id: In-Reply-To: <200005012343.QAA28681@implode.root.com> References: <200005012343.QAA28681@implode.root.com> Date: Tue, 2 May 2000 11:19:37 +0200 To: dg@root.com, chad@DCFinc.com From: Brad Knowles Subject: Re: How good is AMI MegaRAID support? Cc: parag@cgt.com, msmith@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Content-Type: text/plain; charset="us-ascii" ; format="flowed" Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG At 4:43 PM -0700 2000/5/1, David Greenman wrote: > There are other issues to consider when thinking about software >RAID-5. The > most important of these is the (lack of) non-volatile write-back cache. I've got NVRAM for the cache, and can even have up to 4GB of it. It doesn't help in my case, because the controllers and the controller firmware just doesn't seem to be up to snuff. You need to have a system that is well-balanced and well-implemented all over, and even if it's got lots of NVRAM, that may not be enough to get you the performance you need. -- These are my opinions -- not to be taken as official Skynet policy ====================================================================== Brad Knowles, || Belgacom Skynet SA/NV Systems Architect, Mail/News/FTP/Proxy Admin || Rue Colonel Bourg, 124 Phone/Fax: +32-2-706.13.11/12.49 || B-1140 Brussels http://www.skynet.be || Belgium To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message