From owner-freebsd-questions@FreeBSD.ORG Wed Jul 17 08:22:08 2013 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 9D43716A for ; Wed, 17 Jul 2013 08:22:08 +0000 (UTC) (envelope-from emorrasg@yahoo.es) Received: from nm21-vm0.bullet.mail.ird.yahoo.com (nm21-vm0.bullet.mail.ird.yahoo.com [212.82.108.204]) by mx1.freebsd.org (Postfix) with ESMTP id D9143C40 for ; Wed, 17 Jul 2013 08:22:07 +0000 (UTC) Received: from [77.238.189.227] by nm21.bullet.mail.ird.yahoo.com with NNFMP; 17 Jul 2013 08:22:00 -0000 Received: from [46.228.39.108] by tm16.bullet.mail.ird.yahoo.com with NNFMP; 17 Jul 2013 08:22:00 -0000 Received: from [127.0.0.1] by smtp145.mail.ir2.yahoo.com with NNFMP; 17 Jul 2013 08:22:00 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.es; s=s1024; t=1374049320; bh=F0ngAdvu/Nz3Z/8c3bNskSQKapfliutlZk92C+c9M8w=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:X-Rocket-Received:Date:From:To:Subject:Message-Id:X-Mailer:Disposition-Notification-To:Mime-Version:Content-Type:Content-Transfer-Encoding; b=Mwqw/GtuFkNLuWYqmDNkpv6I1ErgZO5XbivFzmqJCUzrr0PISUwK1NJlqDieJ2JHqxNv8Qv8wTMMVLU5LpfQNfwHcRL1nATsOQ7UD2yvbwX/R9LiITm7urUkhcblOzvzUNDF826V+ymLH/3wn5nZbU9zGa9XZNxc1XB2BEunkig= X-Yahoo-Newman-Id: 520507.34420.bm@smtp145.mail.ir2.yahoo.com X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: GwLu7e0VM1kfpOdNOx4Ag3d8cbcViMBdWoP0GV8IDdsDO3Y Z2FZFk.YyDHQgkpfXoKKYpwAOCAPgKH56iR2ToBdq2km4fr42SiMWrjRFaxH zW1fjZARS7.Ts0cmWKIvDN_sPJCc8mYQEMLmgdGrJGy_serG2zSnOPfKXeXP MYmVtk4fOnOmudVtmOY3yWoWHC2AVDKeDfh9MvkBZkREQRDg2fj_jGXIZrkB pCXCL29.u9LEXlxe5A9lYXFkR3U1PdS1wA4ZxjXjsovIwGkcV7ct_ZjV6oOS 4y7uqoOeIOPJWJOkvjyhsuFX57HrD4qNEyqfDWO9yxGKol28TetpUngFZtrZ DvUWtAWE3mFGLda70KxNuEkFg0EiJcmhs7v0eqhZYA01SoAeYfsXseKD8uXa 9ydSLvrI18SC0t9dYdiJoJw6jROg9H0vbW5B.a5Q0x86Da0e.2QAmBZiAtZk OE8S_RhMT2vkojyT1at7F1MxFeGg- X-Yahoo-SMTP: mX392iiswBAeJNdO_s.EW62LZDJR X-Rocket-Received: from camibar.emorras.eu (emorrasg@89.7.216.154 with ) by smtp145.mail.ir2.yahoo.com with SMTP; 17 Jul 2013 08:22:00 +0000 UTC Date: Wed, 17 Jul 2013 10:22:09 +0200 From: Eduardo Morras To: freebsd-questions@freebsd.org Subject: Does geom_raid1e support raid10e? Message-Id: <20130717102209.509c812e0753dcdeee635890@yahoo.es> X-Mailer: Sylpheed 3.3.0 (GTK+ 2.24.19; amd64-portbld-freebsd9.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 17 Jul 2013 08:22:08 -0000 Hello, I want to know if geom_raid1e support raid10e level too. The difference between them is that 1e duplicates the 32-64-128-whatever block data size in all n disks in the raid1e but raid10e only between n/2 and n (a try to show it below), making raid10e bigger and more flexible than plains raid1/raid1e or raid10 respectively. In raid1e: Disk D1 D2 D3 D4 D5 Block a1 a1 a1 a1 a1 Block a2 a2 a2 a2 a2 Block a3 a3 a3 a3 a3 In raid10e: Disk D1 D2 D3 D4 D5 Block a1 a1 a1 a2 a2 Block a2 a3 a3 a3 a4 Block a4 a4 a5 a5 a5 In these examples, with block size of 128KB, raid1e will survive to fail of 4 disks and stores 128*3 = 384 KB; raid10e will survive to fail of 2 disks and stores 128*5 = 640 KB. In some literature, raid10e duplicates between 2 and n disks. --- --- Eduardo Morras