From owner-freebsd-fs@FreeBSD.ORG Sun May 16 20:37:58 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 53DB9106564A for ; Sun, 16 May 2010 20:37:58 +0000 (UTC) (envelope-from numisemis@yahoo.com) Received: from web112409.mail.gq1.yahoo.com (web112409.mail.gq1.yahoo.com [98.137.26.153]) by mx1.freebsd.org (Postfix) with SMTP id 208848FC18 for ; Sun, 16 May 2010 20:37:57 +0000 (UTC) Received: (qmail 88619 invoked by uid 60001); 16 May 2010 20:37:57 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1274042277; bh=vJCu3wov7Ie7SOPvcW9J2dbDoY8LVvNwBAMgCEc/VIk=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=Q+wlmF2c1KUB7yM4/LN6bSEWlaWErqy1CVgjlPVgGAHs6+emhBVlJGQdSksu1+vuSUNExXfbJfnMqTTUwAMNLcQRPOC6sfrVrZYb8qwpP5KyWeakHJrT3coI8GD61xV1Kww+GodxsYpVq6hwhyJM/tcE067eWx1ihlb8WKfnEFQ= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:References:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=GMV5gm7fzguqOmJbQsqBBsmZPBCkrZ7Mu/wpiDVX7kpqmKvgDAQ3BOqTNTshiseMA5++DE6YEcwWFzCWn1nKq434vrr2w2iVdrna96jhAX3SycNzqMmW9c+7tJhduQKgAaycdvaRLZ9FgmnRGG4lFuRwzjfoYG/rdIIDKJG9+Q0=; Message-ID: <657328.88413.qm@web112409.mail.gq1.yahoo.com> X-YMail-OSG: 5i1eb4AVM1lKirK6eRqlZINIOvkhNlRo4yhh0x5bTL1qOAm 6bhNaSOlfmBLDBNfEbvh3mE7BFyR9lbUhqlYmMf6_aUOMiIDHPEfY9J2rtPt hvPCvrOpQ0zPK9C7zXbQ8pq5uSjVF7Ub7ha5cndbhrXJyaPvLkC49woU17Uo FjBuztvltsTpqPKX0GvPHJtW4XQn..8imiJcJMaTBW.OA3Pfx93eJypTolEJ cg_DUWSeGg8pXdqoirVxfTl6EpIUfaejURv0xV3EbOwqEA.BVJr4WMMu3vpC xrZIu8NsL_bR42oCIVGTvHIiZ70vPdvcVFzAjGZuNau648MKVcJ4szPcRDBB Bf3pxU.23SGzR1hXRxfFqaEmXbQe7jA-- Received: from [188.125.24.109] by web112409.mail.gq1.yahoo.com via HTTP; Sun, 16 May 2010 13:37:57 PDT X-Mailer: YahooMailRC/374.4 YahooMailWebService/0.8.103.269680 References: <4BEF2F9C.7080409@netscape.net> <4BEF3137.4080203@netscape.net> <20100516001351.GA50879@icarus.home.lan> <4BEF4A73.8060905@netscape.net> <20100516015850.GA55302@icarus.home.lan> Date: Sun, 16 May 2010 13:37:57 -0700 (PDT) From: Simun Mikecin To: Jeremy Chadwick In-Reply-To: <20100516015850.GA55302@icarus.home.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: freebsd-fs@freebsd.org Subject: Re: Quick ZFS mirroring question for non-mirrored pool X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 May 2010 20:37:58 -0000 ----- Original Message ---- > From: Jeremy Chadwick > To: Kaya Saman > Cc: freebsd-fs@freebsd.org > Sent: Sun, May 16, 2010 3:58:50 AM > Subject: Re: Quick ZFS mirroring question for non-mirrored pool > > Also, please reconsider going with Western Digital > RE4 2TB drives. These drives are all "GP" (Green Power) drives, which you do > not want. There have been numerous reports on the FreeBSD mailing lists > about problems with these drives (repeated head offloading/parking > causing problems in RAID arrays), and yes, it applies to Enterprise class > drive as well; WD has indirectly confirmed the problem in one user's case > by sending him a "fixed" firmware. I can point you to threads if you > want to read them. Well, there are two types of WD RE4 enterprise drives: "RE4" and "RE4 GP". Only "RE 4GP" is a "Green Power" drive. "RE4" is a performance drive spinning at 7200rpm (and I believe it is currently fastest enterprise 2TB drive on the market).