From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phil Turmel Subject: Re: 3TB drives failure rate (summary) Date: Wed, 31 Oct 2012 08:35:11 -0400 Message-ID: <50911AFF.9020707@turmel.org> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1494377384.20121031005457@oudeis.org> Sender: linux-raid-owner@vger.kernel.org To: =?UTF-8?B?UmFpbmVyIEbDvGdlbnN0ZWlu?= Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 10/30/2012 07:54 PM, Rainer F=C3=BCgenstein wrote: >=20 > tnx for your input; apart from the detailed discussion the topic may > be summarised like this: >=20 > - better buy WD red drives next time (will do!) >=20 > - other manufacturers drives fail too, not only a WD issue >=20 > - drives from one (bad) batch are more likely to fail >=20 > current status: >=20 > the raid5 assembled of just 3 WD 3TB green drives works fine so far, > even under load. no bad sectors so far (knocking on wood). will exten= d > it to 4 drives as soon as the replacement drive arrives. >=20 > the drives are installed in the same chassis and bays as all the > previous drives, therefore it is unlikely that the failures were > caused by overheating/vibrations etc. >=20 > never had any (serious) problems with 750GB and 1.5TB WD green drives > before. 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 res= tart. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html