Hard Drive Error Checking Technique During Idle Periods

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Hard disks have a number of in-built facilities for detecting, correcting, and avoiding the data errors. The hard drive errors may occur because of gradual degradation of a specific location on storage media. It can be possible to detect hard drive bad sector before it reaches to a point where it may lead to data loss. If you do not use disk checking tool on regular basis and any problems with the hard drive leads to data loss, you may have to go for data recovery to retrieve lost data, if an updated backup is not in place.

Since the hard drives use ECC (Error Correction Code) for correcting multiple-bit errors, detecting these errors can help you prevent data loss. However, these methods can do only if the number of incorrect or missing bits is less than a certain threshold. In case if you cannot discover the problem on time, data loss may occur.

To work around this precept, some hard drive manufacturers are integrating routines to perform proactive drive error checking. During the idle periods, logic board of the hard drive carries out reads over disk surface for verifying that data can be accessed without errors. If it encounters any error, the error is generally treated the similar way an error is addressed during user read operation. The data can be rewritten for refreshing it, or the hard drive sector where error is relocated can be remapped.

It is a quite useful reliability characteristic, but may cause confusion sometimes. This scanning process can produce hard drive active sounds, even if the hard drive is not involved with any of the computer operations. If your hard drive is incorporated with this characteristic and you encounter such sounds from the hard drive, there is nothing to worry about. It does not even affect the hard drive performance as the scanning is done only when the hard drive is idle.

Though, these techniques are quite helpful to detect and remove hard drive errors, but they cannot detect errors due to external reasons and cannot prevent data loss. In such circumstances, you need to take help of data recovery solutions.

In case, your hard drive is physically intact and you are experiencing data loss due to logical errors, data recovery software can help you to get your data back. On the other hand, physical data loss situations require special assistance of data recovery service to be cured.