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Increasing reallocated sectors count: how to check hardware
Hello! My ReadyNAS have detected massive increasing amount of reallocated sectors at one of 2 my mirrored HDDs. I pulled the HDD out to run some tests. S.M.A.R.T analysis detected reallocated sector...
gpn12buy wrote:
But further surface tests did not find any problems,
Did you do the destructive write test, or only read tests? I've had drives which pass the read tests, but which fail on the write-zeros test.
It's hard to envision a failure mode of the bay that would cause the drive to increase its reallocated sector count.
gpn12buy wrote:
But further surface tests did not find any problems,
Did you do the destructive write test, or only read tests? I've had drives which pass the read tests, but which fail on the write-zeros test.
It's hard to envision a failure mode of the bay that would cause the drive to increase its reallocated sector count.
StephenB wrote:
gpn12buy wrote:But further surface tests did not find any problems,
Did you do the destructive write test, or only read tests? I've had drives which pass the read tests, but which fail on the write-zeros test.
It's hard to envision a failure mode of the bay that would cause the drive to increase its reallocated sector count.
Hello, Stephen. You were completely right. I managed to back my data up and proceeded with further tests. HDD did successfully pass read tests (again!) with nice clean SMART after that. But it failed succeeded write tests showing me 5K+ reallocated sectors:-) The reason is obviously HDD, just like you said. Thank you for help!
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