From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maurice Hilarius Subject: Re: 3ware 9650SE-16ML w/XFS & RAID6: first impressions Date: Sun, 07 Dec 2008 11:35:17 -0700 Message-ID: <493C1765.7070901@harddata.com> References: <200812071355.49427.hpj@urpla.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <200812071355.49427.hpj@urpla.net> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Hans-Peter Jansen Cc: linux-raid@vger.kernel.org, xfs@oss.sgi.com, linux-kernel@vger.kernel.org List-Id: linux-raid.ids Hans-Peter Jansen wrote: > Am Mittwoch, 3. Dezember 2008 schrieb Justin Piszcz: > >> For read speed, it appears that there is some overhead (2x). With >> software raid6 I used to get 1.0Gbyte/sec read speed, or at least >> 800MiB/s across the entire array, now I only get 538MiB/s across the >> entire array. However, write speed is improved. Before it was in the mid >> 400s for RAID6 and peaking at 502MiB/s at the outer edge of the drives. >> For the write speed now, its around 620-640MiB/s at the end of the array >> and 580-620MiB/s going in further and 502MiB/s across the entire array. I >> always heard all of the horror stories with 3ware cards, it turns out >> they're not so bad after all. >> > > Hustin, if you're after speed, AND sane support, you may consider trying > Areca products. I'm biased, since 3ware fed me up completely, when it came > to a single drive failure in a RAID 5 setup: the support only provides an > ugly web interface: when posting my problem, they replied with: > > Nice Areca advertisement. Of course you can demonstrate how their tech support responded, to a similar DISK failure, with a better suggestion, and more promptly? Buried for biased and irrelevant. -- With our best regards, //Maurice W. Hilarius Telephone: 01-780-456-9771/ /Hard Data Ltd. FAX: 01-780-456-9772/ /11060 - 166 Avenue email:maurice@harddata.com/ /Edmonton, AB, Canada http://www.harddata.com// / T5X 1Y3/ / [[HTML alternate version deleted]] _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs