Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932178AbVJRWfG (ORCPT ); Tue, 18 Oct 2005 18:35:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932185AbVJRWfG (ORCPT ); Tue, 18 Oct 2005 18:35:06 -0400 Received: from prgy-npn1.prodigy.com ([207.115.54.37]:29452 "EHLO oddball.prodigy.com") by vger.kernel.org with ESMTP id S932178AbVJRWfF (ORCPT ); Tue, 18 Oct 2005 18:35:05 -0400 Message-ID: <435578C7.1090504@tmr.com> Date: Tue, 18 Oct 2005 18:35:51 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.11) Gecko/20050729 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Robert Hancock , Linux Kernel Mailing List Subject: Re: Anybody know about nforce4 SATA II hot swapping + linux raid? References: <4UXuH-EU-31@gated-at.bofh.it> <4XLQk-6Z2-1@gated-at.bofh.it> <4XMt3-7Yt-5@gated-at.bofh.it> <4350A1C5.3080902@shaw.ca> In-Reply-To: <4350A1C5.3080902@shaw.ca> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1430 Lines: 31 Robert Hancock wrote: > Lajber Zoltan wrote: > >> We have about 7 serverraid card from 4L to 5i. All of them is sitting on >> shelf. They are pain to manage, ipssend tool is weak, serverdirector >> complicated. And they are slow, the Fusion MPT SCSI with sw raid >> significant faster, as we measured with bonnie++. Even the old aic7892 is >> faster (these built-in scsi controllers on xseries motherboards). > > > The 6i and 7 series of cards seem to have quite a bit better relative > speeds. Certainly the 4Lx cards can be outperformed in simple "hdparm" > tests by a 3ware SATA controller/disks of half the price.. > > Plus, software RAID can't provide good performance on many server/DB > applications without risking data loss in certain cases - for such > things one really wants something with a battery-backed cache on it.. > I just have a better feeling about hardware when there are dozens of multi-TB servers from NY to CA. If it goes down IBM fixes it instead of someone trying to get it back up at the console. -- -bill davidsen (davidsen@tmr.com) "The secret to procrastination is to put things off until the last possible moment - but no longer" -me - 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/