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 dragonh...@gmail.comwrote: On Wed, Feb 24, 2010 at 8:08 AM, Tom Buskey t...@buskey.name wrote: They found little difference between enterprise and consumer grade lifetimes. That doesn't surprise me. They're often the exact same hard disk

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 t...@buskey.name 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

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 dragonh...@gmail.comwrote: On Tue, Feb 23, 2010 at 6:05 PM, Ken D'Ambrosio k...@jots.org 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

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 t...@buskey.name 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

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

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 k...@jots.org 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