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data recovered via error correction code

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3 replies

by daniel c. 1 view

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Running NT 4.0 server, SP6a. A PDC
SCSI HDs with hardware RAID 5

Got this warning in the event viewer:

Event ID: 33
source: Disk

description: Data was recovered using error correction code on device \device\harddisk0\partition2

whatdoes this mean? Do I have a bad HD? Please answer this question only if you are confident of what you are talking about. Thanks.

3 replies

by vinnyd

That error does mean there was an error on a sector or cluster on the hard drive.

The sector or cluster has been mapped as bad in the drive table and the data that was in that sector or cluster was moved to a different sector or cluster on the hard drive.

Does that mean the disk is bad? Not really. It is common to allow 10% of the total disk to have bad sectors or clusters. If the drive starts to exceed the 10% or get close to it, it is time to replace the hard drive.

For only one sucherror I would not do anything. If the error starts repeating day after day, replace the hard drive before a fatal error.

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