From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id A4BDE1381F3 for ; Tue, 17 Sep 2013 08:26:38 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 9CA63E0B17; Tue, 17 Sep 2013 08:26:33 +0000 (UTC) Received: from mail-bk0-f48.google.com (mail-bk0-f48.google.com [209.85.214.48]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 7AC59E0AFD for ; Tue, 17 Sep 2013 08:26:32 +0000 (UTC) Received: by mail-bk0-f48.google.com with SMTP id my13so1960000bkb.35 for ; Tue, 17 Sep 2013 01:26:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=mObeXcCJHsZNJ6ETTiPImjWdiL/X3NtlawpN5d1qtiQ=; b=HYMmAK+6qoE9CbkB/Me8ZlF6LjNidsa/lt8qqAS2nYElAuWk/57zOAO36sNMPK7Syj 29kLLPV2dPzJH76ZkRARDvTVYinUCeVfcphBuItZS4M8SLN4g3TO5JugjuBJMbpFTwCA CGJgehqVH/OZ/90oUkG3AwDHPr+fQeItxgr8DfKQLw4KyYGXjmWcNE0SIOjn4BEJwrVi WmvvJcstH4FTDovwYLXEtPPYMN04d0iUpXHLOK9A6NgRMCAdSNDpFy66J8n7mrOLcOoF 9Rm8UpPkEE5J9Yh2wCulETkw/ix1Ty6g9+ra3lgFp/AhENj1dd2p4ssAUys90eGIOZV2 6JMQ== X-Received: by 10.204.121.201 with SMTP id i9mr28673975bkr.13.1379406391018; Tue, 17 Sep 2013 01:26:31 -0700 (PDT) Received: from [10.1.20.197] (dustpuppy.is.co.za. [196.14.169.11]) by mx.google.com with ESMTPSA id pk7sm9310019bkb.2.1969.12.31.16.00.00 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 17 Sep 2013 01:26:30 -0700 (PDT) Message-ID: <5238113C.7030604@gmail.com> Date: Tue, 17 Sep 2013 10:22:20 +0200 From: Alan McKinnon User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130809 Thunderbird/17.0.8 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] ZFS References: In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Archives-Salt: 096fc0e7-f120-4615-97aa-795b01cf9fb9 X-Archives-Hash: ebd124f8adf08e3ef829a5f61e0c226d On 17/09/2013 10:05, Pandu Poluan wrote: > On Tue, Sep 17, 2013 at 2:20 PM, Grant wrote: >> I'm convinced I need 3-disk RAID1 so I can lose 2 drives and keep >> running. I'd also like to stripe for performance, resulting in >> RAID10. It sounds like most hardware controllers do not support >> 6-disk RAID10 so ZFS looks very interesting. >> >> Can I operate ZFS RAID without a hardware RAID controller? >> > > Yes. In fact, that's ZFS' preferred mode of operation (i.e., it > handles all redundancy by itself). I would take it a step further and say that a hardware RAID controller actively interferes with ZFS and gets in the way. It gets in the way so much that one should not do it at all. Running the controller in JBOD mode is not a good idea, I'd say it's a requirement. -- Alan McKinnon alan.mckinnon@gmail.com