From owner-freebsd-questions@FreeBSD.ORG Wed Oct 28 21:06:42 2009 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 3F8C8106566B for ; Wed, 28 Oct 2009 21:06:42 +0000 (UTC) (envelope-from michaelgrunewald@yahoo.fr) Received: from smtp6.netcologne.de (smtp6.netcologne.de [194.8.194.26]) by mx1.freebsd.org (Postfix) with ESMTP id 00C968FC1D for ; Wed, 28 Oct 2009 21:06:41 +0000 (UTC) Received: from llea.celt.neu (xdsl-81-173-228-131.netcologne.de [81.173.228.131]) by smtp6.netcologne.de (Postfix) with ESMTP id 835EB2A0EFC; Wed, 28 Oct 2009 22:06:40 +0100 (CET) Message-ID: <4AE8B266.2070306@yahoo.fr> Date: Wed, 28 Oct 2009 22:06:46 +0100 From: =?ISO-8859-1?Q?Micha=EBl_Gr=FCnewald?= User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.8.1.23) Gecko/20090919 SeaMonkey/1.1.18 MIME-Version: 1.0 To: David N References: <20091027150519.dcee178a.freebsd@edvax.de> <4AE75293.5020603@yahoo.fr> <20091028125215.55ad3801.freebsd@edvax.de> <4AE8A1B3.2070503@yahoo.fr> <4d7dd86f0910281312u54015538sb492db1ebc51fe59@mail.gmail.com> In-Reply-To: <4d7dd86f0910281312u54015538sb492db1ebc51fe59@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Cc: Polytropon , freebsd questions general Subject: Re: Bad sectors: how bad can it be 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: Wed, 28 Oct 2009 21:06:42 -0000 Hello David, thank you for your comments, David N wrote: > 2009/10/29 Michaël Grünewald : >> === START OF READ SMART DATA SECTION === >> SMART Self-test log structure revision number 1 >> Num Test_Description Status Remaining LifeTime(hours) >> LBA_of_first_error >> # 1 Extended offline Completed without error 00% 458 - >> # 2 Extended offline Aborted by host 70% 456 [...] > If your smartctl says it has used up a spare block > (Reallocated_Sector_Ct), replace the drive ASAP. The drives will tend > to get more and more bad blocks after the the first one is found, > usually because the head is damaging the disks or the head itself is > damaged, or other reasons. If its under warranty they usually replace > is, talk to the manufacturer before hand. I have Reallocated_Sector_Ct=0 for the faulty drive. Where can I find a key fo reading all the other exciting numbers listed under the banner ``SMART Attributes Data Structure revision number: 10 Vendor Specific SMART Attributes with Thresholds:'' ? On the hard-drive I use for my backups, a SAMSUNG HD501LJ, all the numbers I read looks fine to me, but I want to be sure. Thus it would be nice have a key for the table that `smartctl -a /dev/ad6' outputs. My two other drives, I use to store my OS and my data, are MAXTOR STM3250820AS (I do not have a RAID setup, it just happens that I have twin hard drives). They both have `Reallocated_Sector_Ct=0' but have positive `Raw_Read_Error_Rate', `Seek_Error_Rate'. Additionally, the faulty drive has positive `Reported_incorrect=119',`Current_Pending_Sector=4294967295' and `Offline_Uncorrectable=4294967295'. As looking for hints on google leads to many threads discussing hard-drive failures, I did not find what a pleasant description of the signification of these numbers. -- Kind regards, Michaël