You are currently browsing the archives for the Computers category.

Balloon Quote

    “Nobody can be uncheered with a balloon”

    - Winnie The Pooh Quotes

Members

Archive for the ‘Computers’ Category

Hard Drive Data Recovery Service Evaluation

Tuesday, October 27, 2009
posted by Frank Stevens

Hard Drive Data Recovery Service Evaluation

Almost any computer repair and service shop will tell you that they can provide data recovery services. For almost all of them that’s almost true. In reality, they can recover data from damaged or defective hard drives if the failure was from specific causes. If the failure was caused by foreign particles or bits of the disk broken off by a head crash, however, most of these little neighborhood shops are more likely to make matters worse than to help.

Hard drives can fail for a variety of reasons. The electronics that control them may fail, they may become unreadable after corruption by a virus, exposure to strong magnetic fields can erase critical portions of the hard drive, or physical damage can occur as a result of jostling the hard drive or due to dust or other particulate matter entering the hard drive and getting caught between the reading head and the spinning hard drive disk.

In the case of a head crash or foreign matter inside the hard drive, any attempt to spin the disk up and read it normally can cause very substantial additional damage as the loose particles scratch more and more of the thin magnetized surface of the disk, destroying any remaining data. For data recovery from hard drives that have failed from these causes, it is necessary to have the proper equipment and skill to open the drive physically and remove the loose particles without introducing new ones, before data recovery can be safely attempted.

This kind of delicate operation requires a positive pressure clean room that is free from airborne dust. Even the smallest bit of dust can cause problems if it gets onto the surface of the hard drive disk. The disk, or platter as it is also called, must be handled very delicately in order to prevent any further damage during this operation. Relatively few of those repair shops offering data recovery service have the equipment or the expertise to handle this kind of recovery operation. Some of them will send your hard drive off to another company that has the proper skills and facilities. Others will try to recover your data the easy way and see what happens.

If the hard drive has been corrupted by a virus, inadvertently erased, or suffers from a controller problem, then data recovery is a much easier operation since there is little risk of the recovery operation causing further damage to the drive, but if you don’t know the cause of the drive’s failure, then you shouldn’t take chances. Look for a data recovery specialist company that really knows what they’re doing. They should have a clean room in which they handle any required opening of the drive. They should have the skills and equipment necessary to handle data recovery of hard drives that have failed for almost any reason.