From owner-freebsd-stable@FreeBSD.ORG Tue Feb 20 14:23:18 2007 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id EC0EB16FF21 for ; Tue, 20 Feb 2007 14:10:33 +0000 (UTC) (envelope-from chris@arnold.se) Received: from av6-2-sn3.vrr.skanova.net (av6-2-sn3.vrr.skanova.net [81.228.9.180]) by mx1.freebsd.org (Postfix) with ESMTP id D4F2C13C779 for ; Tue, 20 Feb 2007 13:37:31 +0000 (UTC) (envelope-from chris@arnold.se) Received: by av6-2-sn3.vrr.skanova.net (Postfix, from userid 502) id 35C853830D; Tue, 20 Feb 2007 14:07:31 +0100 (CET) Received: from smtp3-2-sn3.vrr.skanova.net (smtp3-2-sn3.vrr.skanova.net [81.228.9.102]) by av6-2-sn3.vrr.skanova.net (Postfix) with ESMTP id 106F137EDA; Tue, 20 Feb 2007 14:07:31 +0100 (CET) Received: from chrishome.localnet (81-224-156-16-o1033.telia.com [81.224.156.16]) by smtp3-2-sn3.vrr.skanova.net (Postfix) with ESMTP id C550937E4F; Tue, 20 Feb 2007 14:07:30 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by chrishome.localnet (8.13.6/8.13.6) with ESMTP id l1KD7TSv070168; Tue, 20 Feb 2007 14:07:29 +0100 (CET) (envelope-from chris@arnold.se) Date: Tue, 20 Feb 2007 14:07:29 +0100 (CET) From: Christopher Arnold X-X-Sender: chris@chrishome.localnet To: Volker In-Reply-To: <45D9FD35.6040702@vwsoft.com> Message-ID: <20070220140510.Q5453@chrishome.localnet> References: <45D9FD35.6040702@vwsoft.com> X-message-flag: =?ISO-8859-1?Q?Outlook_isn=B4t_compliant_with_current_standards?= =?ISO-8859-1?Q?_please_install_another_mail_client!?= MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-stable@freebsd.org Subject: Re: getting garbage faster using FreeBSD? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Feb 2007 14:23:19 -0000 On Mon, 19 Feb 2007, Volker wrote: > For my dentist I'm currently in the process of destroying some tape > cartridges (SLR7) and also two hard disks (147G SCSI). > > The tape sits there since 48 hours writing a block of data every > other minute and still didn't fill up the tape completely. The > system this is running on is a P-4 3GHz machine using FreeSBIE 2.0 > (6.2-RELEASE based). > > I suspect this to be a slow /dev/random. > > As there is medical data on all media I really need garbage > (/dev/zero wouldn't be enough for data security as this might get > recovered). > As a quick (slow?) fix, couldn't you just fill the disks with random data and then dump that data to your tapes? /Chris -- www.infotropic.com