From owner-freebsd-questions@FreeBSD.ORG Mon Aug 25 13:39:15 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 97B4FEB4 for ; Mon, 25 Aug 2014 13:39:15 +0000 (UTC) Received: from mail-qc0-f171.google.com (mail-qc0-f171.google.com [209.85.216.171]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 521963C29 for ; Mon, 25 Aug 2014 13:39:14 +0000 (UTC) Received: by mail-qc0-f171.google.com with SMTP id r5so13636179qcx.2 for ; Mon, 25 Aug 2014 06:39:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:mime-version:content-type:from :in-reply-to:date:cc:content-transfer-encoding:message-id:references :to; bh=aMcH0N/xz4RaLjfhqJz8QkaMccHDh/MPzLnUtohnJMs=; b=gNVlvCDcfhS9kHpazXNFDv+oaIXnCgXLuwrmkkBlJP/oQ4GzVc2epls9utIxlvLNnD sgQ1x7Qo0M27DqTR5LLXQ1DgXQizVBVPtZ8fQ9+tsBahqPiQTfj34mBPLvgNHgNEqO+J qJDKudoDKS37RonNyJTFv982q9gJcA+XtIsbs/wALS//LxPiIkR1WAqTWFLadIHSXBr4 gLmUXyjoOrWj4EhZX0ixdS2dmh8Dhzglu0oR8z6dVtCEn4wJfzf/VwGr1FMyv60Mjlzf M3SKzwMY7GGoug6IXI0pKkhqpYFdRinXXlg/JOTt+ciLVmMtLocPPir6oBEc/uvAujBr GSOQ== X-Gm-Message-State: ALoCoQlpEPRZPGveG00xRuXRbjGC3sKpeXnboIsxAj6xPPRzwkhwPAAv4Q2PCoFu8dZs9kz+MDzF X-Received: by 10.229.68.131 with SMTP id v3mr34952717qci.10.1408973534186; Mon, 25 Aug 2014 06:32:14 -0700 (PDT) Received: from [192.168.2.65] ([96.236.21.80]) by mx.google.com with ESMTPSA id g31sm48628905qge.0.2014.08.25.06.32.13 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 25 Aug 2014 06:32:13 -0700 (PDT) Subject: Re: some ZFS questions Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=windows-1252 From: Paul Kraus In-Reply-To: <53FB0AFD.6010507@cyberleo.net> Date: Mon, 25 Aug 2014 09:32:12 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <653E16C8-1CE7-4DE9-AE53-A93D871E37DF@kraus-haus.org> References: <201408070816.s778G9ug015988@sdf.org> <40AF5B49-80AF-4FE2-BA14-BFF86164EAA8@kraus-haus.org> <201408211007.s7LA7YGd002430@sdf.org> <20140822005911.GA52625@neutralgood.org> <201408241027.s7OARfEK004658@sdf.org> <53FB0AFD.6010507@cyberleo.net> To: CyberLeo Kitsana X-Mailer: Apple Mail (2.1878.6) Cc: Scott Bennett , freebsd-questions@freebsd.org, kpneal@pobox.com X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Aug 2014 13:39:15 -0000 A business not technical question below =85 On Aug 25, 2014, at 6:07, CyberLeo Kitsana = wrote: > I'm currently running a 30TB=86 10-disk zpool on a machine with a = Haswell > CPU and, with AES-NI, the encryption operation is faster than the > throughput of all disks combined; there is no perceptible performance > impact. When a disk failed recently, it was so much easier to simply > destroy the key material rather than having to worry about somehow > securely erasing a device that was not always responsive before = shipping > it back for replacement. >=20 > I have a lot of failed hard drives. Is it really cheaper to RMA a failed drive that just toss it ? If you have =93a lot=94 of failed drives, have thou found the root cause = yet? Do share. -- Paul Kraus paul@kraus-haus.org