From owner-freebsd-scsi Thu Apr 19 15:35:12 2001 Delivered-To: freebsd-scsi@freebsd.org Received: from cage.tse-online.de (cage.tse-online.de [194.97.69.170]) by hub.freebsd.org (Postfix) with SMTP id 9BEC737B422 for ; Thu, 19 Apr 2001 15:35:08 -0700 (PDT) (envelope-from braukmann@tse-online.de) Received: (qmail 43259 invoked by uid 1000); 19 Apr 2001 22:35:05 -0000 Date: Fri, 20 Apr 2001 00:35:05 +0200 From: Andreas Braukmann To: scsi@freebsd.org Subject: Re: IDE RAID Message-ID: <20010420003505.G33303@cage.tse-online.de> References: <200104191949.f3JJnge01789@mass.dis.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200104191949.f3JJnge01789@mass.dis.org>; from msmith@freebsd.org on Thu, Apr 19, 2001 at 12:49:42PM -0700 Organization: TSE GmbH - Neue Medien Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hi, On Thu, Apr 19, 2001 at 12:49:42PM -0700, Mike Smith wrote: > > BWT, is 3ware supported by FreeBSD in raid5 mode? > > 'man twe' tells only about 0 and 1 somewhy. > > Yes, it is. I haven't had any time lately to test it, but it's known to > work. Yes, it just works. But the 3ware's current implementation seems to be not that efficient (compared to lowend SCSI-RAID-controllers like the Mylex 160/170 e.g.). My observation so far: RAID 0+1 => the 3ware (with 4 IBM drives) clearly outperforms the Mylex. The Mylex seems not be able to keep up with the speed of 4 modern SCSI harddrives (IBM DTYS or even with the older DNES). RAID 5 => the Mylex 170 clearly outperforms the 3ware. Sorry, I didn't archived my bonnie and rawio results :(. The conclusion (regarding cost/performance ratio) was pretty clear: Our new webserver machine got an 3Ware Escalade 6400 driving a RAID 0+1 Array. -Andreas -- : Anti-Spam Petition: http://www.politik-digital.de/spam/ : : PGP-Key: http://www.tse-online.de/~ab/public-key : : Key fingerprint: 12 13 EF BC 22 DD F4 B6 3C 25 C9 06 DC D3 45 9B : To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message