Being a data recovery company, we're all too well aware of the fact that hard disks are in no fashion 100% reliable and fail safe. Most drive makers quote the dependability of their drives in terms of 'Mean Time Between Failure ' (MTBF for short).
Most older hard drives had a MTBF of between 20,000 and 50,000 hours (roughly between 800 and 2000 days) of continual use before they may be expected to fail, whereas more contemporary drives are quoted at somewhere between 300,000 and 500,000 hours, an enormous improvement but still not totally failsafe.
Reasons for a Head Crash?
So , apart from simply wearing out, what are examples of the other main factors behind drive failure?
Physical knocks are probably the most common reason for flawed hard drives that we come across, generally if the PC gets a knock or jolt while it is powering up, the disk's head can establish contact with the outer surface of the disk, scraping off some of the coating from the disk's tracks. In these scenarios (called a 'head crash'), the damages to the disk is usually both considerable and permanent. In worst case situations, if the head crash occurs while the drive's head is positioned above the drive's stated system areas (e.g. Master Boot Record and DOS Boot Record), then the whole disk can be rendered unusable.
This sort of problem is more common with portable systems like notebooks, netbooks and external disc drives (normally after they've been dropped), but still happens with standard Computer systems too.
If you suspect that your hard disk could have suffered a head crash, or any other kind of failure, do not use it, get in contact with a professional data recovery company who have the specialist technology required to perform a hard drive recovery and get the data from the drive.
Most older hard drives had a MTBF of between 20,000 and 50,000 hours (roughly between 800 and 2000 days) of continual use before they may be expected to fail, whereas more contemporary drives are quoted at somewhere between 300,000 and 500,000 hours, an enormous improvement but still not totally failsafe.
Reasons for a Head Crash?
So , apart from simply wearing out, what are examples of the other main factors behind drive failure?
Physical knocks are probably the most common reason for flawed hard drives that we come across, generally if the PC gets a knock or jolt while it is powering up, the disk's head can establish contact with the outer surface of the disk, scraping off some of the coating from the disk's tracks. In these scenarios (called a 'head crash'), the damages to the disk is usually both considerable and permanent. In worst case situations, if the head crash occurs while the drive's head is positioned above the drive's stated system areas (e.g. Master Boot Record and DOS Boot Record), then the whole disk can be rendered unusable.
This sort of problem is more common with portable systems like notebooks, netbooks and external disc drives (normally after they've been dropped), but still happens with standard Computer systems too.
If you suspect that your hard disk could have suffered a head crash, or any other kind of failure, do not use it, get in contact with a professional data recovery company who have the specialist technology required to perform a hard drive recovery and get the data from the drive.
About the Author:
Jason Sloan runs a data recovery business called Kingdom Data Recovery Edinburgh who service all of the United Kingdom. He's got many articles on his web site which refer to issues with storage and helpful information about preventing data loss.
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