From owner-freebsd-questions@FreeBSD.ORG Mon Jul 13 20:06:25 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 8EA44106564A for ; Mon, 13 Jul 2009 20:06:25 +0000 (UTC) (envelope-from fsb@thefsb.org) Received: from smtp224.iad.emailsrvr.com (smtp224.iad.emailsrvr.com [207.97.245.224]) by mx1.freebsd.org (Postfix) with ESMTP id 649EC8FC14 for ; Mon, 13 Jul 2009 20:06:25 +0000 (UTC) (envelope-from fsb@thefsb.org) Received: from relay12.relay.iad.mlsrvr.com (localhost [127.0.0.1]) by relay12.relay.iad.mlsrvr.com (SMTP Server) with ESMTP id 3D45720A6EA; Mon, 13 Jul 2009 15:51:05 -0400 (EDT) Received: by relay12.relay.iad.mlsrvr.com (Authenticated sender: fsb-AT-thefsb.org) with ESMTPSA id 1B9EE20A69C; Mon, 13 Jul 2009 15:51:05 -0400 (EDT) User-Agent: Microsoft-Entourage/12.10.0.080409 Date: Mon, 13 Jul 2009 15:50:59 -0400 From: Tom Worster To: Maxim Khitrov Message-ID: Thread-Topic: ZFS or UFS for 4TB hardware RAID6? Thread-Index: AcoD8z5DdP2yl5ytSkSheG2exQ+Abw== In-Reply-To: <26ddd1750907131223k9e20142n1fbc41e16d82bf87@mail.gmail.com> Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit Cc: Free BSD Questions list Subject: Re: ZFS or UFS for 4TB hardware RAID6? 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: Mon, 13 Jul 2009 20:06:26 -0000 On 7/13/09 3:23 PM, "Maxim Khitrov" wrote: > On Mon, Jul 13, 2009 at 2:13 PM, Richard Mahlerwein wrote: > >> I guess the last question I'll ask (as any more may uncover my ignorance) is >> if you need to use hardware RAID at all? It seems both UFS2 and ZFS can do >> software RAID which seems to be quite reasonable with respect to performance >> and in many ways seems to be more robust since it is a bit more portable (no >> specialized hardware). > > I've thought about this one a lot. In my case, the hard drives are in > a separate enclosure from the server and the two had to be connected > via SAS cables. The 9690SA-8E card was the best choice I could find > for accessing an external SAS enclosure with support for 8 drives. > > I could configure it in JBOD mode and then use software to create a > RAID array. In fact, I will likely do this to compare performance of a > hardware vs. software RAID5 solution. if you do, please share any insights that come of it here.