Reallocated sectors just means that a block was pending reallocation
and then was reallocated - in other words, the disk had problems
reading a sector, marked it as pending reallocation, and as soon as
that sector was overwritten or successfully read, it got reallocated.
My present root disk has a single reallocated sector, and I've had no
other trouble from it in the two years I've had it. My root disk on my
server at home has 0 sectors and has been running that 24/7 since
2003. I just zeroed a drive that had read errors after it was in a car
crash and stopped booting; it ended up with 4 reallocated sectors and
worked fine.
IMO, you should only be worried if the pending reallocation count (or
reallocated count) monotonically keeps rising, or if some numbers you
do don't make sense (e.g. I had a disk that reported N sectors pending
reallocation; post-zeroing the entire disk, the number of reallocated
sectors had gone up, but the pending reallocation count had increased,
and increased again after I zeroed it again. At that point, I recycled
the drive, because it was clearly unreliable).
[Also, my suggestion would be that you might want to back up the drive
contents, then zero the entire drive, and see if the self-test passes
afterward; it's possible it's getting "stuck" on some hard-to-read
region of the drive, though it really should fail at that point.
Alternatively, it's possibly a defect in how smartmontools reports the
result from the drive; see the Samsung quirk flags in the
documentation for things like that.]
- Rich
|
