On 11/06/2017 04:38 PM, Eyal Lebedinsky wrote: > On 07/11/17 07:15, Wolfgang Denk wrote: >> Dear Eyal, >> >> In message <c12a2a32-2321-1ed7-e1de-ce0e408552e1@xxxxxxxxxxxxxx> >> you wrote: >>> >>> (I had many disk failures/replacements in the 4 years life of >>> this array). >> >> Reading this makes me wonder if you checked your environment for >> other influences. there must be some reason for an exceptional >> high number of failures. >> >> I remeber we also had a nighmare of disk errors in the rack in the >> 2nd floor of our building - which disappeared after moving the >> rack into the basement. I can't prove it, but I blame it on >> vibrations. We have a heavy traffic train line less than 50 meters >> away, and disks (classic, magnetic ones) definitely do not like >> vibrations - see [1]. Maybe you have other influences you did not >> check for yet? > > Interesting Wolfgang, > > - This array is at home, a relatively quiet place. - I monitor the > disks temperatures and it is OK. - The machine runs off a UPS which > can be a source of bad power (if the PS does not filter it out). - > The HBA may be somehow bothering the disks? > > The disks are under warranty until late next year so there is time to > see if the disks do better with the LSI. > > BTW, two of the RMAs were for disks that arrived DOA (as RMAs). I do > not have high regard for the WD blacks. The failures were spread > across the last 4 years (so not infant mortality). > > If nothing else, this experience made me comfortable with software > raid, and encouraged me to stick to my backup schedule. That's a really bad failure rate. But they're WD Blacks, which if I recall correctly, do not support scterc. Did you deal with your driver timeouts? If not, those drives probably weren't really dead. Just not raid-compatible out-of-the-box. 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
