From owner-freebsd-fs@FreeBSD.ORG Sat Jul 3 18:28:04 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 46C3C106566C for ; Sat, 3 Jul 2010 18:28:04 +0000 (UTC) (envelope-from bounces@nabble.com) Received: from kuber.nabble.com (kuber.nabble.com [216.139.236.158]) by mx1.freebsd.org (Postfix) with ESMTP id 22B8A8FC12 for ; Sat, 3 Jul 2010 18:28:03 +0000 (UTC) Received: from isper.nabble.com ([192.168.236.156]) by kuber.nabble.com with esmtp (Exim 4.63) (envelope-from ) id 1OV7Rb-0002Wv-BH for freebsd-fs@freebsd.org; Sat, 03 Jul 2010 11:28:03 -0700 Message-ID: <29065362.post@talk.nabble.com> Date: Sat, 3 Jul 2010 11:28:03 -0700 (PDT) From: Bucarr To: freebsd-fs@freebsd.org In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Nabble-From: bucarr@gmail.com References: Subject: Re: zfs on 4k sector disks 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: Sat, 03 Jul 2010 18:28:04 -0000 I was wondering that as well. So I set up a new FreeBSD8.0 box with a UFS2 disk as my boot disk and two WD 2TB EARS drives ("Advanced Format") for a zfs data array. I made no attempt to alter the WD drives in any way and ignored the 512b vs 4096b issues. 'zpool create tank raidz da0 da1' set up the array in a few seconds and I've copied to/from with no troubles and no apparent performance issues that I care about. If I had more of the WD drives lying around, I'd add those to the array and see what gives then. HTH, Bucky mailinglists-19 wrote: > > Hello, > > I've got 3 1.5TB drives that are using the "Advanced Format" from > Western Digital, see the link for details: > http://www.wdc.com/wdproducts/library/WhitePapers/ENG/2579-771430.pdf > This "Advanced Format" basically means the sectors size on disk is > changed to 4k in stead of 512k. > > I'm wondering if freeBSD 8.0 using ZFS raidz and drives like these will > work properly, I've seen a lot of articles and postings about partitions > not being properly aligned with the physical disk layout and suffering > big performance hits. My question is; should I worry about these issues > or does ZFS already align the data on a 4k border? > > My setup would be 3 * 1.5TB WD drives (WD15EARS) using the whole drive > for a raidz pool. > > Thanks, > Rob Evers > ***deze e-mail is gescand door Onlinespamfilter.nl*** > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > > -- View this message in context: http://old.nabble.com/zfs-on-4k-sector-disks-tp27664932p29065362.html Sent from the freebsd-fs mailing list archive at Nabble.com.