Server Building > Hard Drives and Controllers
Preclear and Failed Drives
DoeBoye:
Well folks, Here's that poll I was suggesting. I'm very curious to see the results! And for those of you who aren't running preclear.... What's Wrong With You!!??? :P.
I voted for 1 cycle with failed drives.
prostuff1:
--- Quote from: DoeBoye on April 27, 2011, 11:25:28 AM ---Well folks, Here's that poll I was suggesting. I'm very curious to see the results! And for those of you who aren't running preclear.... What's Wrong With You!!??? :P.
I voted for 1 cycle with failed drives.
--- End quote ---
I run 3 cycles, and have had drives fail on the second or third cycle. I ran a drive with one pass and it was good, I put it into service in my array and then it failed about 2 weeks later. That is the main reason I run 3 cycles. I have had a couple of drives preclear on the first cycle OK (not perfect) only to show worse signs on the second and third preclear.
Rajahal:
I didn't see the option I wanted, so I edited the poll and added it. I always run preclear for a minimum of 2 cycles on every drive I use, but I've only ever see a drive fail on the first cycle if it fails at all. When a drive fails on the first cycle it typically fails on all subsequent cycles as well.
I have also seen a few drives that took exceedingly long on the first cycle (like 2x or longer than normal), but still passed, then ran at normal speed on all subsequent cycles. These drives have all turned out to be fine in normal use. I can't explain why the first pass took so long.
bjp999:
Suggested options ...
- What's preclear
- Ive had a drive fail after 1 or more preclear cycles (please post your experience)
- I've had a drive fail in the first cycle of preclear
- I've had a drive fail in the second cycle of preclear
- I've had a drive fail in the third or higher cycle of preclear
- I routinely run 1 preclear cycle and never had a drive fail during preclear
- I routinely run 2 preclear cycles and never had a drive fail during preclear
- I routinely run 3 or more preclear cycles and never had a drive fail during preclear
WeeboTech:
--- Quote from: prostuff1 on April 27, 2011, 11:39:28 AM ---
--- Quote from: DoeBoye on April 27, 2011, 11:25:28 AM ---Well folks, Here's that poll I was suggesting. I'm very curious to see the results! And for those of you who aren't running preclear.... What's Wrong With You!!??? :P.
I voted for 1 cycle with failed drives.
--- End quote ---
I run 3 cycles, and have had drives fail on the second or third cycle. I ran a drive with one pass and it was good, I put it into service in my array and then it failed about 2 weeks later. That is the main reason I run 3 cycles. I have had a couple of drives preclear on the first cycle OK (not perfect) only to show worse signs on the second and third preclear.
--- End quote ---
I'm dealing with my first failed drive and this is what I've seen. 1 successful preclear, then during the rebuild I had all sorts of failures. Think I'm gonna run a few preclears on another spare drive I have.. phew good thing I keep a few around.
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