From owner-freebsd-questions@FreeBSD.ORG Tue Feb 18 22:28:55 2014 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id AD11DA97; Tue, 18 Feb 2014 22:28:55 +0000 (UTC) Received: from h3lix.wtfayla.net (helix.wtfayla.net [24.105.170.68]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 012BC1C74; Tue, 18 Feb 2014 22:28:55 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by h3lix.wtfayla.net (Postfix) with ESMTP id 0D25484B67; Tue, 18 Feb 2014 17:27:53 -0500 (EST) Received: from h3lix.wtfayla.net ([127.0.0.1]) by localhost (h3lix.wtfayla.net [127.0.0.1]) (maiad, port 10024) with ESMTP id 24898-05; Tue, 18 Feb 2014 17:27:52 -0500 (EST) Received: from helix.wtfayla.net (helix.wtfayla.net [24.105.170.68]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by h3lix.wtfayla.net (Postfix) with ESMTPS id AE0FC84B62; Tue, 18 Feb 2014 17:27:52 -0500 (EST) Date: Tue, 18 Feb 2014 17:27:52 -0500 (EST) From: freebsd@fongaboo.com X-X-Sender: fongaboo@helix.wtfayla.net To: Eitan Adler , questions@freebsd.org Subject: ZFS on Hardware RAID controller In-Reply-To: Message-ID: References: User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Feb 2014 22:28:55 -0000 When we spoke, you noted that when installing ZFS on multiple disks connected to a hardware RAID controller, it is best to config it to JBOD. I tried to explain this to a colleague, but they were skeptical. Would you (or anyone) be willing to give me a one or two line sales-pitch on why one should abandon traditional notions of RAID performance in favor of allowing ZFS to do disk management? Thanx FONG ------------------------------------------------------------------------- shot through the heart ooh baby do you know what that's worth and you're to blame ooh heaven is a place on earth darling you give love they say in heaven love comes first a bad name we'll make heaven a place on earth ORBITAL "Halcyon Live"