October 21, 201015 yr Hi. I been moving data for almost a day now and i was taking a closer look to the UnMenu web interface. I was looking specifically at "My Main" tab and under [smart] view i realized that there is 1 reallocated sector count and 1 reallocated event count. I preclear that disk without any errors. Last night when i was moving some large files the power went down in the computer (no the UnRaid Box). Could this have anything to do with this error? Can i solve this? Is this anything to be worried about? Should i expect my drive to die soon or something like that??
October 21, 201015 yr Nothing to worry about. Modern drives ship with thousands of spare sectors to be used in just this event. The only time you may want to start worrying is if you see that number increasing at a steady rate. However, as long as you just get one or two reallocated sectors once in a while, no big deal.
October 21, 201015 yr Nothing to worry about. Modern drives ship with thousands of spare sectors to be used in just this event. The only time you may want to start worrying is if you see that number increasing at a steady rate. However, as long as you just get one or two reallocated sectors once in a while, no big deal. Reallocated sectors indicate that the drive has determined that a spot on the disk can no longer be reliably read and written, and it marks it bad and maps in a spare sector from a small set that the drive holds in reserve. So if a sector or two (or even a few hundred) go bad over the life of the drive, its not a problem. What is a problem (and is far more common in practice), is that a drive will start reallocating a few sectors at a time on every parity check. If this is what's happening, the drive is bad and needs to be RMAed. At the first sign of a reallocated sector, I suggest starting to run parity checks. If you can run 3-4 in a row and not have another sector reallocate, you are probably fine. But if start getting a sector or two reallocating on most every parity check, the drive is bad.
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