From owner-freebsd-questions@FreeBSD.ORG Tue Jul 16 05:11:21 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 148CD2F3 for ; Tue, 16 Jul 2013 05:11:21 +0000 (UTC) (envelope-from aurfalien@gmail.com) Received: from mail-oa0-x22b.google.com (mail-oa0-x22b.google.com [IPv6:2607:f8b0:4003:c02::22b]) by mx1.freebsd.org (Postfix) with ESMTP id D65F9E71 for ; Tue, 16 Jul 2013 05:11:20 +0000 (UTC) Received: by mail-oa0-f43.google.com with SMTP id i7so305437oag.16 for ; Mon, 15 Jul 2013 22:11:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; bh=yY2XjnigAaVZw0qVykfEn4NjBz1sThv7w0OOpD6fGZ0=; b=XU/SjXUHK47uGHdl21nUrh5MHhfKGwkd80ovhhHo0o4pyQ7xGDiXPnFiJPddUHoFKW 2DU2GjWhHoFtu3VIjIfxiPfm7+SHH5Z9yuVBQQzqKdBvNjFYk6Wnoq54g0Pd/K9bQDwd rtZjhJiK3KNrw3K8SZRIu17uL6NAYMjVqn2iel3CWkeNy4uJY1MBfIj4HhNhoHPWInId xCgXRTzTdggLUbLtSZAG6XghAefAydTmWwNv7kUkWVbYkt7h1zLpbl3yMj2oRuAIwGac 4EkdbJZuk6W3gxOwtfPhX7Xmtg0r6JkikZ/MW74OZpDuvQpOWLm3q0aoGZLU8hcUNTm0 oo4w== X-Received: by 10.60.39.193 with SMTP id r1mr46197194oek.40.1373951480503; Mon, 15 Jul 2013 22:11:20 -0700 (PDT) Received: from [192.168.1.74] (75-63-29-182.lightspeed.irvnca.sbcglobal.net. [75.63.29.182]) by mx.google.com with ESMTPSA id r4sm73158864oem.3.2013.07.15.22.11.18 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 15 Jul 2013 22:11:19 -0700 (PDT) Subject: Re: to gmirror or to ZFS Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii From: aurfalien In-Reply-To: Date: Mon, 15 Jul 2013 22:11:16 -0700 Content-Transfer-Encoding: quoted-printable Message-Id: <976836C5-F790-4D55-A80C-5944E8BC2575@gmail.com> References: <4DFBC539-3CCC-4B9B-AB62-7BB846F18530@gmail.com> To: Warren Block X-Mailer: Apple Mail (2.1085) Cc: freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jul 2013 05:11:21 -0000 On Jul 15, 2013, at 9:23 PM, Warren Block wrote: > On Mon, 15 Jul 2013, aurfalien wrote: >=20 >> ... thats the question :) >>=20 >> At any rate, I'm building a rather large 100+TB NAS using ZFS. >>=20 >> However for my OS, should I also ZFS or simply gmirror as I've a = dedicated pair of 256GB SSD drives for it. I didn't ask for SSD sys = drives, this system just came with em. >>=20 >> This is more of a best practices q. >=20 > ZFS has data integrity checking, gmirror has low RAM overhead. = gmirror is, at present, restricted to MBR partitioning due to metadata = conflicts with GPT, so 2TB is the maximum size. >=20 > Best practices... depends on your use. gmirror for the system leaves = more RAM for ZFS. Perfect, thanks Warren. Just what I was looking for. - aurf