SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

2010-02-23 Thread Ken D'Ambrosio
On Tue, February 23, 2010 5:43 pm, Benjamin Scott wrote: > While I run smartd in monitor mode, I've never had it give me a > useful pre-failure alert. Likewise, I've never had the SMART health check > in PC BIOSes give me a useful pre-failure alert. More than once I've seen > SMART report the ov

Re: SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

2010-02-23 Thread Benjamin Scott
On Tue, Feb 23, 2010 at 6:05 PM, Ken D'Ambrosio wrote: > Huh -- I actually *have* had SMART tell me things were awry, several > times. Well, that's good to know. :) Just curious, did you get a chance to see if any of them actually started failing soon after? Like I said, I did have one c

Re: SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

2010-02-24 Thread Tom Buskey
On Tue, Feb 23, 2010 at 7:43 PM, Benjamin Scott wrote: > On Tue, Feb 23, 2010 at 6:05 PM, Ken D'Ambrosio wrote: > > Huh -- I actually *have* had SMART tell me things were awry, several > > times. > > Well, that's good to know. :) > > Just curious, did you get a chance to see if any of them ac

Re: SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

2010-02-24 Thread Benjamin Scott
On Wed, Feb 24, 2010 at 8:08 AM, Tom Buskey wrote: > They found little difference between enterprise and consumer grade lifetimes. That doesn't surprise me. They're often the exact same hard disk assembly, just with different firmware, or maybe a different PCB. Despire marketing claims to the

Re: SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

2010-02-25 Thread Tom Buskey
On Wed, Feb 24, 2010 at 10:03 PM, Benjamin Scott wrote: > On Wed, Feb 24, 2010 at 8:08 AM, Tom Buskey wrote: > > They found little difference between enterprise and consumer grade > lifetimes. > > That doesn't surprise me. They're often the exact same hard disk > assembly, just with different

Re: SMART diags (was: mismatch_cnt != 0, member content mismatch, but md says the mirror is good)

2010-02-25 Thread Benjamin Scott
On Thu, Feb 25, 2010 at 8:48 AM, Tom Buskey wrote: > Apparently, the drives could get into sync & harmonic motion with the new > setup.  We had 3-4 drive failures in one week.  The new drives had different > firmware that prevented this. Wow. That's a great anecdote. This is why engineers dre