From owner-freebsd-hardware@FreeBSD.ORG Fri May 18 03:18:51 2007 Return-Path: X-Original-To: freebsd-hardware@freebsd.org Delivered-To: freebsd-hardware@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id EF02516A401 for ; Fri, 18 May 2007 03:18:51 +0000 (UTC) (envelope-from on@cs.ait.ac.th) Received: from mail.cs.ait.ac.th (mail.cs.ait.ac.th [192.41.170.16]) by mx1.freebsd.org (Postfix) with ESMTP id 7033413C447 for ; Fri, 18 May 2007 03:18:51 +0000 (UTC) (envelope-from on@cs.ait.ac.th) Received: from banyan.cs.ait.ac.th (banyan.cs.ait.ac.th [192.41.170.5]) by mail.cs.ait.ac.th (8.13.1/8.12.11) with ESMTP id l4I3Imgu009320 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 18 May 2007 10:18:48 +0700 (ICT) Received: (from on@localhost) by banyan.cs.ait.ac.th (8.13.3/8.12.11) id l4I3Ii4T096608; Fri, 18 May 2007 10:18:44 +0700 (ICT) Date: Fri, 18 May 2007 10:18:44 +0700 (ICT) Message-Id: <200705180318.l4I3Ii4T096608@banyan.cs.ait.ac.th> From: Olivier Nicole To: thwang@mail.nhcue.edu.tw In-reply-to: <224a745a0705170354i31fc311bsf502aba056e4c73c@mail.gmail.com> (biogary@gmail.com) References: <224a745a0705170006t3a1df03cv5312bf6fc86ee426@mail.gmail.com> <200705170714.l4H7EgvR082226@banyan.cs.ait.ac.th> <224a745a0705170354i31fc311bsf502aba056e4c73c@mail.gmail.com> X-Virus-Scanned: on CSIM by amavisd-milter (http://www.amavis.org/) Cc: freebsd-hardware@freebsd.org Subject: Re: messages from dmesg -- (HP ProLiant DL380 G5) X-BeenThere: freebsd-hardware@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General discussion of FreeBSD hardware List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 May 2007 03:18:52 -0000 Hi, > I had tried to configure the first SAS HD as RAID 0 before. The RAID 0 > SAS HD was also > recognized as SCSI-0 device. I am a bit puzzled. How can you configure ONE disk in RAID. AFAIK, any RAID configuration needs a minimum of two disks. > I think the problem is not on the size of RAID 5 HD. I never mentionned anything about the size, I just said that inherently, RAID 5 has slow transfer. If you need faster transfer, you may think about a different RAID architecture. Best regards, Olivier