From owner-freebsd-questions@FreeBSD.ORG Mon Mar 22 15:09:35 2010 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 542A5106566B for ; Mon, 22 Mar 2010 15:09:35 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (gate6.infracaninophile.co.uk [IPv6:2001:8b0:151:1::1]) by mx1.freebsd.org (Postfix) with ESMTP id B9DDE8FC13 for ; Mon, 22 Mar 2010 15:09:34 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [81.187.76.163]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.4/8.14.4) with ESMTP id o2MF9TWE087342 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Mon, 22 Mar 2010 15:09:30 GMT (envelope-from m.seaman@infracaninophile.co.uk) Message-ID: <4BA78829.5070002@infracaninophile.co.uk> Date: Mon, 22 Mar 2010 15:09:29 +0000 From: Matthew Seaman Organization: Infracaninophile User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-GB; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: Ian Lord References: In-Reply-To: X-Enigmail-Version: 1.0.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.95.3 at happy-idiot-talk.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_ADSP_ALL, SPF_FAIL autolearn=no version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on happy-idiot-talk.infracaninophile.co.uk Cc: freebsd-questions@freebsd.org Subject: Re: 12 TB Disk In freebsd AMD 64 ? 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, 22 Mar 2010 15:09:35 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 22/03/2010 14:03:53, Ian Lord wrote: > I kinda understand freebsd is not well suited for that. I can read > between the lines that we shouldn't go over 2TB. Is this information > still exact or outdated ? Outdated. The 2TB limit comes from the old-style DOS/fdisk(8) mbr and bsdlabel(8)[*]. Nowadays you can use gpart(8) instead and set up your disks using GPT, which doesn't have the same limitations. Given you're going to have a separate RAID1 mirror for system disks, you'll be able to get the machine up and running first, then build the filesystems for the data partition without having to faff around at install time. Even though you have a hardware RAID controller, it still might benefit you to look at ZFS. You can put a 'zpool disk' on top of a RAID6 created by your hardware, which will let you use all of the available space easily, and give you various other advantages through the integrated checksumming etc. built into ZFS. Cheers, Matthew [*] bsdlabel(8) has been modified to allow more than 8 partitions -- the bigdisk article is a bit behind the times there -- but the 32-bit size limit still applies. - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkuniCkACgkQ8Mjk52CukIwLVwCfUHnREj6ATinA9GTigrQJREDK InsAn03HRRNbNHxavbfZFY9E4KlNXC/j =LD41 -----END PGP SIGNATURE-----