Oracle Disaster Recovery Article
Don't Let Failure Bother You
When you hear a technician speak about hard disk data recovery failure there are a couple of things he could be talking about. When it comes to an actual data recovery failure it can be one of two things: a logical failure, and a physical failure.
Data recovery failure: Logical
Logical data recovery failure is one of the most common kinds of data recovery failure and is usually the result of hard disk corruption. There are many different causes for the actual failure: catching a computer virus, accidentally deleting important files, putting the hard disk too close to a magnet, and other forms of human error. Fortunately, in the case any logical hard disk data recovery failure, the hard disk is still recognized by the system's Basic Input/Output System (BIOS). Unfortunately, despite the computer recognizing the BIOS, it may not boot. In some cases, the data on the hard disk may still be intact even though you may not be able to get to it.
When it comes to a logical data recovery failure, they're two different types to look at. The user error type of data recovery failure is caused when a person accidentally deletes or overwrites important files by formatting a partition. These user errors can sometimes be fixed by just buying data recovery software. The software error type of data recovery failure is caused when the software begins writing data to wrong part of a disk. This kind of error requires the services of a technician.
Data recovery failure: Physical
When the cause of the data recovery failure is a physical one, is easily diagnosed because the system BIOS does not actually detect the presence of your hard disk. Basically, your hard disk is a ghost that your computer cannot see. A physical data recovery failure is usually caused by one of two things: mechanical problems, or electronic problems.
Mechanical data recovery failure is usually caused by the failure of your hard disk's spindle motor. When the spindle motor fails it can cause your hard disk to overheat, which causes the hard disk shaft to expand and shift the spindle motor. If this happens your hard disk will become unusable, fortunately, when this type of failure begins to occur there are some warning signs. When your spindle motor begins to fail you may hear a whining or whirring noise along with a grinding noise accompanied by high-pitched screeching. Once you hear these noises it is important that you back up all of your information on disk or CD, and get your computer to a technician directly.
Electronic data recovery failure is easily diagnosed by taking a look at your hard drive's circuit board. This particular kind of data recovery failure can happen at any time, without warning. It doesn't matter if your hard disk is brand new or five years old, electronic failure can happen to your computer.
No matter what caused the actual hard disk data recovery failure, it is important that to prevent it from happening in the future you keep your computer clean, in a breathable area, and away from any heat source. Taking these few steps can help in the long run at keeping your computer healthy.
