From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: 3TB drives failure rate (summary) Date: Thu, 01 Nov 2012 15:24:32 +0000 Message-ID: <50929430.50201@anonymous.org.uk> References: <11510711257.20121028131527@oudeis.org> <508D61A1.7020106@wildgooses.com> <508D65CF.1080904@gmail.com> <508DADC3.4080104@shiftmail.org> <508DB08D.20002@meetinghouse.net> <508DC6E9.8070001@shiftmail.org> <508DC922.7040400@meetinghouse.net> <20121029102919.1134a797@natsu> <508E3626.8080404@hesbynett.no> <508E7E68.1030202@turmel.org> <1494377384.20121031005457@oudeis.org> <50911AFF.9020707@turmel.org> <509291B2.5000907@meetinghouse.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <509291B2.5000907@meetinghouse.net> Sender: linux-raid-owner@vger.kernel.org To: Miles Fidelman Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 01/11/2012 15:13, Miles Fidelman wrote: > Phil Turmel wrote: >> I strongly encourage you to run "smartctl -l scterc /dev/sdX" for each >> of your drives. For any drive that warns that it doesn't support SCT >> ERC, set the controller device timeout to 180 like so: >> >> echo 180 >/sys/block/sdX/device/timeout >> >> If the report says read or write ERC is disabled, run "smartctl -l >> scterc,70,70 /dev/sdX" to set it to 7.0 seconds. >> >> You then set up a boot-time script to do these adjustments at every >> restart. > > Sounds like a very bad idea if your drive is part of a RAID array. Either of these - the scterc if you can, the device timeout if you can't - are an excellent idea if you are using a desktop drive as part of a md RAID array. Why do you think otherwise? Cheers, John.