The IBM recovery software utilize the wise technology that is involved in all modern hard disks, which enables the hard drive recovery to evaluate and calculate the time-span that your hard drive will end in Threshold Exceeded Condition (TEC).the IBM software tool can be made alive to execute the TEC model on the chosen drive. As people are into the recovery process of hard drive ,more companies are providing their own service and many companies have started to design and develop their own programs to recover the hard drive. In case of normal hard drive failure, standard service is provided to recover the hard drive. Hard drive failure is a process where hard drive is affected by a virus, or by any human who unknowingly did something to it, or any software issue related to the hard drive etc. Many people will feel like hard disk drive damage is impossible and they would have though that as the hard drive has been with them for 15 years and more, it will never break down. They usually have the assumption that physical crash will never happen to a hard drive. The exact matter of fact is that the physical crash may occur at anytime without your expectation, as today hard drive is running in very high speed, thus gets heated immensely resulting in breakage. So they will be very cautious about the data in the hard drive, but yet need to do much research in order to get a good company to do the work. Retrieving the data somehow It is quite appealing that, whatever be the problem, nothing will happen to the data stored. Either the hard drive is repaired or even if its not repairable, then these companies will help to recover the data stored in it by copying it in another media like tape or into new hard drive. Thus the best method is to call an expert instead of depending upon the free software. An expert can help you much better than any other. A specialist can help you to repair the hard drive which is impaired and recover the data that is lost. You can even approach a friend or relative and someone who is well known technically and know how to do, before going for free software. In the process of unimpaired head components of the hard drive, thus for recovering the data is highly demanding and you really ought to build the electronics again in order to access the data. Most of the experts who retrieve the files from the hard drive using the software do the same when they detect that the head components are not completely damaged.