On 2014-09-08, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > > Indeed, lucky me. As of this moment I have 6 of 9650 in production boxes. > For at least 6 years. During which time none of them ever failed on me > (including any trouble with arrays). Knocking on wood. You totally jinxed them! You'll probably have three of them fail in the next month. ;-) > I must say though > that I do prefer the most reliable drives. And I always have arrays > checked at least once a week through 3ware scheduler (this causes walk > through the whole surface of each of drives, thus ensuring bad blocks if > any do not stay undiscovered...). I decided to do verifies once a month, instead of the default once a week. My thinking was that hitting all of every drive so frequently might be a wear factor, but periodic scrubs are still important; plus, for my larger arrays, having performance slightly degraded 1/7 of the time was not so desirable. So now I do 12 verifies a year instead of 52. I think the verify has picked up maybe two errors in ~10 years. (It does sometimes expose when a drive is failing, which is handy.) The LSI MegaRAID cards have their own scheduling, and I haven't had time enough to read the manual to figure out how to set this (or indeed, even to figure out what the schedule is; the MegaRAID UI is much more arcane than the 3ware). --keith -- kkeller at wombat.san-francisco.ca.us