From owner-freebsd-fs@FreeBSD.ORG Tue Dec 15 16:26:48 2009 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 A3251106568F for ; Tue, 15 Dec 2009 16:26:48 +0000 (UTC) (envelope-from wonslung@gmail.com) Received: from mail-ew0-f226.google.com (mail-ew0-f226.google.com [209.85.219.226]) by mx1.freebsd.org (Postfix) with ESMTP id 313968FC24 for ; Tue, 15 Dec 2009 16:26:47 +0000 (UTC) Received: by ewy26 with SMTP id 26so30514ewy.3 for ; Tue, 15 Dec 2009 08:26:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=iLhhcqu2MhcFdvI92VI9l21RIoZRQGag/gkDBEnRJBI=; b=ku+sMQYe1MutiX3hxLCnvW6T7RlH8weMS0/NrMrIb4W+47S2I90dO77BsQoqQhLqK9 khFgRzD/QoYpQ+1OOaGCfEXpzAyvPBcvzIkSQLyIP1SAJGGRWgnp4vtNpPvVIudoB3N6 W3tv6cy/NhleOv+igmlPJOODDaSqXDlpH00pw= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=xgt4J/X7NIcZEONxcos5t49oqza13+EcCTW2k9JWJJ1qYSoPM33HwFBofWQ1Vkva1S AjQ8Irr8nLz1zCBCsIPS00CDtn1s/ILxquhnMFQNSwAZw0EMxEYr4MaeOqcJ5PKXkJLR BZV5BEjQxXj2yO3IsBcd5ZNjSk0ZpzmI0HZ/0= MIME-Version: 1.0 Received: by 10.216.89.82 with SMTP id b60mr2585329wef.170.1260892818457; Tue, 15 Dec 2009 08:00:18 -0800 (PST) In-Reply-To: <568624531.20091215163420@pyro.de> References: <568624531.20091215163420@pyro.de> Date: Tue, 15 Dec 2009 11:00:18 -0500 Message-ID: From: Thomas Burgess To: Solon Lutz Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-fs@freebsd.org Subject: Re: ZFS RaidZ2 with 24 drives? 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: Tue, 15 Dec 2009 16:26:48 -0000 you should avoid it. if you want more information about why this is a BAD idea, read this post: http://forums.freebsd.org/showpost.php?p=22025&postcount=17 you should keep in mind each raidz group is seen by zfs more or less as a single hard drive...you should stick to groups NO BIGGER than 9 drives personally, i use 4-5 drives for raidz1 and 6-8 drives for raidz2 also, keep in mind, while you do loose a LITTLE space, you gain a ton more MTTF it's very much worth it. I'd go with 3 groups of 8 or 4 groups of 6 24 in one group = 33 TB 3 groups of 8 = 27 TB 4 groups of 6 = 24 TB personally, i'd go with the 3 groups of 8 On Tue, Dec 15, 2009 at 10:34 AM, Solon Lutz wrote: > Hi, > > are there any cons against building a RaidZ2 with 24 1.5TB drives? > In some old postings floating around the net a limit of 9 drives > is recommended. > Does this still apply to the current ZFS in 8.0? > > > Best regards, > > Solon Lutz > > > +-----------------------------------------------+ > | Pyro.Labs Berlin - Creativity for tomorrow | > | Wasgenstrasse 75/13 - 14129 Berlin, Germany | > | www.pyro.de - phone + 49 - 30 - 48 48 58 58 | > | info@pyro.de - fax + 49 - 30 - 80 94 03 52 | > +-----------------------------------------------+ > > _______________________________________________ > 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" >