From owner-freebsd-fs@FreeBSD.ORG Sun Oct 7 19:06:38 2007 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 DD84916A418 for ; Sun, 7 Oct 2007 19:06:38 +0000 (UTC) (envelope-from softsearch@gmail.com) Received: from mu-out-0910.google.com (mu-out-0910.google.com [209.85.134.190]) by mx1.freebsd.org (Postfix) with ESMTP id 6835C13C459 for ; Sun, 7 Oct 2007 19:06:33 +0000 (UTC) (envelope-from softsearch@gmail.com) Received: by mu-out-0910.google.com with SMTP id w9so1343693mue for ; Sun, 07 Oct 2007 12:06:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:date:from:reply-to:organization:x-priority:message-id:to:subject:mime-version:content-type:content-transfer-encoding; bh=gGp44Wkxa6i6vNbPO6c9E5WnkEltfzh0hlf/cxLygTE=; b=MG3tu2/kX5mBkU/Wzp2XdtsB7+okHQXjd9q3b9gz27x6yuGMgamijpOEzvx8PMgvFiz/bdKK54StKIcpRfXcXdrsyzAcbFLrlQ+En0MHqy3FSQO+sPG5Khp4aadylDjeoC4e4R0jhygy8lCsUnad2a/95YgjCBM1G5S0u2jPnL0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:date:from:reply-to:organization:x-priority:message-id:to:subject:mime-version:content-type:content-transfer-encoding; b=Hx6MqSNsHpjd0AAEFJkdBJFzHTUSNdtGmrf07Tn+km5oWJsm1GKWEsJyY9aNAeMMhuw3UXu8Ljteudj7xpmkHaFF8B+sdNwDFs2ALaHZ63E+KVhJcl8CTRAa3ciJPnDu5BwRu4rDuGPeavM/NftBsMHxIi57Q4y6HJ+UR6LYQdY= Received: by 10.82.146.14 with SMTP id t14mr20218121bud.1191783991807; Sun, 07 Oct 2007 12:06:31 -0700 (PDT) Received: from ?81.200.123.169? ( [81.200.123.169]) by mx.google.com with ESMTPS id f3sm6384025nfh.2007.10.07.12.06.30 (version=SSLv3 cipher=OTHER); Sun, 07 Oct 2007 12:06:31 -0700 (PDT) Date: Sun, 7 Oct 2007 23:05:52 +0400 From: Michael Monashev Organization: SoftSearch.ru X-Priority: 3 (Normal) Message-ID: <19347792.20071007230552@gmail.com> To: freebsd-fs@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: ZFS stripe question X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Michael Monashev List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 07 Oct 2007 19:06:38 -0000 Hi! I have for example 2 same disks: da0 - 500Gb and da2 - 500Gb. I make ZFS stripe on it, and get 2x read speed. If I have 2 same disk, but one of it have 2 slices: da0s1 - 200Gb and da0s2 - 300Gb. After I make ZFS stripe on da0s2 and da2. What would average read speed I get? 2x or ((300+500)/500)x ? What would stripe size I get? 800Gb or 600Gb? Sorry for my English. -- Michael