On 10/30/2012 07:54 PM, Rainer Fügenstein wrote: > > tnx for your input; apart from the detailed discussion the topic may > be summarised like this: > > - better buy WD red drives next time (will do!) > > - other manufacturers drives fail too, not only a WD issue > > - drives from one (bad) batch are more likely to fail > > current status: > > 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 extend > it to 4 drives as soon as the replacement drive arrives. > > 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. > > 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 restart. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
