From owner-freebsd-questions@FreeBSD.ORG Tue Nov 17 21:26:42 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E52AA1065676 for ; Tue, 17 Nov 2009 21:26:42 +0000 (UTC) (envelope-from modulok@gmail.com) Received: from mail-pw0-f44.google.com (mail-pw0-f44.google.com [209.85.160.44]) by mx1.freebsd.org (Postfix) with ESMTP id BCB458FC17 for ; Tue, 17 Nov 2009 21:26:42 +0000 (UTC) Received: by pwj15 with SMTP id 15so272172pwj.3 for ; Tue, 17 Nov 2009 13:26:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=NM9uKOZVK5pOlZqeCIgZlB4oc6j8Z+PrPaNCK7NL42Q=; b=xX+Mx8HnDb/AGJq9FZqOtyznjGfOhQmJfSdpndJMTpSQE/rUTqNbQBVzNpYVjLEyku HK09WaFQR+cIzXlIsahzVIsmpc/AZkh9MraXqwyDZ5QAa+jmin02GzOf4hIOhEFfMrK1 HJYW2K2jUG5df9Q18lUTokZ88DKg1fR5VhnH0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=UNFUa8ewPkHBLUkGiTXTsghDg/c8ZRLcLafmNHW3GzSoh55ieWYMN39W8F2m38fJ6A Ksuqg7/UK1YvH1CarRjLmdRL2t12QWjog3m5CFKp1G7unm5AUZmp+SkLI1Iwsz0YZkRD ydHE2YqyRJ3oHbXtd5/hQSQT8xttAx5Qp/5CM= MIME-Version: 1.0 Received: by 10.143.25.19 with SMTP id c19mr1070539wfj.87.1258493202138; Tue, 17 Nov 2009 13:26:42 -0800 (PST) In-Reply-To: <6201873e0911171303w2c37f1c3we928798a6760d393@mail.gmail.com> References: <64c038660911171249r141cc810n62a721e48225954c@mail.gmail.com> <6201873e0911171303w2c37f1c3we928798a6760d393@mail.gmail.com> Date: Tue, 17 Nov 2009 14:26:42 -0700 Message-ID: <64c038660911171326p329cee87x775a98c5d52605a3@mail.gmail.com> From: Modulok To: Adam Vande More Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-questions@freebsd.org Subject: Re: Wester Digital 'deep recovery cycle' and gstripe? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Nov 2009 21:26:43 -0000 Correction, it would be a graid3 setup. Sorry. -Modulok- On 11/17/09, Adam Vande More wrote: > On Tue, Nov 17, 2009 at 2:49 PM, Modulok wrote: > >> List, >> >> Has anyone used 'Wester Digital Caviar Black' disks in a gstripe? >> >> I'm building a 2TB gstripe, from 3x 1TB disks. My concern, is the >> disks are 'consumer grade' disks. Western Digital mention not to use >> them with a raid controller as they have a potential, 'deep recovery >> cycle', which an last up to 2 minutes. This would theoretically result >> in them being dropped from the array. Despite this, I've heard >> successful uses of these disks via gmirror. (Granted, not the same as >> gstripe). Again, in theory, if one disk enters a 'deep recovery cycle' >> and is dropped from the array, and during that time another disks does >> the same the array is toast, right? >> >> Umm...what are the odds of this occurring? War stories? (The more I >> type this out, the more it's starting to sound like a bad idea.) >> Thoughts, ideas? >> -Modulok- >> >> In a stripe, if one goes it all goes. However I am not certain it's an > issue in your case, the gstripe labeling mode with create a persistent > config. If there's not a better answer, best thing to do would be to test > it out. setting up gstripe takes like 10 minutes. > > > -- > Adam Vande More >