From owner-freebsd-proliant@FreeBSD.ORG Fri Apr 18 18:31:26 2008 Return-Path: Delivered-To: freebsd-proliant@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BDA9D10656C3 for ; Fri, 18 Apr 2008 18:31:26 +0000 (UTC) (envelope-from rainer@ultra-secure.de) Received: from bsd.ultra-secure.de (bsd.ultra-secure.de [62.146.20.26]) by mx1.freebsd.org (Postfix) with ESMTP id 256698FC1D for ; Fri, 18 Apr 2008 18:31:25 +0000 (UTC) (envelope-from rainer@ultra-secure.de) Received: (qmail 66074 invoked by uid 89); 18 Apr 2008 18:31:24 -0000 Received: by simscan 1.1.0 ppid: 66068, pid: 66070, t: 3.4480s scanners: attach: 1.1.0 clamav: 0.88.7/m:44/d:4673 spam: 3.1.7 X-Spam-Checker-Version: SpamAssassin 3.1.7 (2006-10-05) on bsd.ultra-secure.de X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=AWL,BAYES_00 autolearn=ham version=3.1.7 Received: from unknown (HELO ?192.168.1.200?) (rainer@ultra-secure.de@217.71.83.52) by bsd.ultra-secure.de with (AES128-SHA encrypted) SMTP; 18 Apr 2008 18:31:21 -0000 In-Reply-To: <20080418175001.M1439@bellera.cat> References: <20080417171439.M22551@bellera.cat> <20080417172729.M94092@bellera.cat> <83ABD599-A699-4CD8-AF1F-D42357C7D9B9@yahoo.it> <20080418092034.GA34069@eos.sc1.parodius.com> <20080418175001.M1439@bellera.cat> Mime-Version: 1.0 (Apple Message framework v753) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: Content-Transfer-Encoding: 7bit From: Rainer Duffner Date: Fri, 18 Apr 2008 20:30:47 +0200 To: Josep Pujadas i Jubany X-Mailer: Apple Mail (2.753) Cc: freebsd-proliant@freebsd.org Subject: Re: gmirror problem with HP Proliant ML110 G5 X-BeenThere: freebsd-proliant@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Technical discussion of FreeBSD on HP ProLiant server platforms." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Apr 2008 18:31:26 -0000 Am 18.04.2008 um 20:14 schrieb Josep Pujadas i Jubany: > On Fri, 18 Apr 2008 02:20:34 -0700, Jeremy Chadwick wrote >> On Fri, Apr 18, 2008 at 07:12:06AM +0200, Gianni wrote: >> >> Josep, the disks may be the same in capacity, but they aren't >> completely >> identical. It's fairly obvious one is a Seagate and the other is >> HP/Compaq drive. > > Yes, I know. It is difficult to have exactlly the same model when > you buy a > machine to HP in Spain. First disk comes with the machine and the > second in > a separate box. But I have many machines like this using gmirror > and no > problem up to now. IBM's OEMed LSI SAS RAID-controllers (in the blades) likes to have identical drives with identical firmware-revisions, before it even lets you create a RAID1. That's why you (supposedly) pay a premium for IBM and HP: they are supposed to stock enough spare parts so that they can still supply you with them in a couple of years down the road. > >> This is very likely **not** the cause of the DMA errors you're >> seeing, but I did want to take a moment to state that mix-matching >> drives with different semantics in a mirror is somewhat risky. > > No other solution. If one disk fails and I have to change it I'm > quite sure > I will not find the same model. Same geometry yes, but exactly the > same > model not. HP should be able to deliver! If not, I'd not bother with their stuff and just order Tyan-barebones right away. IMO, the low-end HP stuff is not worth the trouble - anything below DL360 is so cheap that I'd have problems calling it a "server" actually. I think I'd rather buy a DL380 from ebay - because those are rock- solid and use decent hardware. The rest are just "Me too"-products so that the roadmap starts at a lower entry price (somebody obviously got annoyed of all the "HP"="high-price" babble) cheers, Rainer -- Rainer Duffner CISSP, LPI, MCSE rainer@ultra-secure.de