It is very easy to forget how long we can all spend working on an important university or business document or PowerPoint presentation, if you were to add it all up it could amount to days and on occasions weeks but what do you do when you suddenly find the file has simply vanished from your computer.

You check your deleted files with no luck and do a full search on your computer but the file or folder has simply vanished. In all probability the file is still on your hard disk but for some reason cannot be found which may be the first signs of a degraded drive.

It would be nice to think that your hard drive will remain reliable for ever until the day you renew your computer but like most things mechanical drive failures do occur it would seem far more often than you would expect especially given the manufacturers mean time between failure specifications that come with a new hard drive or can be found on the manufacturers website.

But oh if life was so simple!

A question often asked is how long should a hard drive be expected to last before requiring replacement?

This is one of those wide open questions that will have experts arguing until the cows come home because there are a wide variety of factors that come into play.

The first major aspect is of course the use that a computer is put through during its lifespan. Many home users only use their Pc very occasionally and store relatively small numbers of files or photos. In this scenario it would be nice to expect a drive to last over 5 years (don’t assume this though).

The same expectation could be applied to the many mid range computer users which includes office Pc’s laptops and home desktop systems, where users have a small number of programs in use and small amounts of data or if data is stored on a central server.

But if your system is used for extreme gaming, computer aided design, Digital content creation or virtual prototyping then the hard disk will be working massively harder than in the previous two scenario’s so it would only be expected that true life expectancy would be a lot shorter.

High end computer users using high end applications will often have a much shorter expected life of their system, and desktop refresh tends to be around 3 years or so to avoid disk failure and to keep them at the cutting edge of computing productivity which is important for a business.

For business critical applications extended use sees a ramp up of hard disk degradation and also an increase in mechanical drive failures.

During challenging economic times, business computer refresh programs are often put of to protect working capital which on the face of it can be seen as a sound business decision but there can be a large bite to this policy if an essential drive or server fails with a resultant loss of business critical data.

Any business should in this day and age have effective remote data backup and disaster recovery policies in place especially if postponing a business system upgrade.

Another prime factor affecting the longevity of the drive is of course disk maintenance. If your hard drive is allowed to become fragmented then it will have to work an awful lot harder to pick up information and in extreme cases of hard disk fragmentation drives can get very stressed to the point of failure.

Your lost file should be easily recoverable but you do need to bear in mind that any further information written to your hard drive can over write the file you are trying to save. This often happens with data recovery software so if diy recovery is your choice be warned.

Most data recovery companies will be able to restore your deleted or lost files even if your drive has degraded and even if your drive has bad sectors that are unreadable hard drive recovery and data recovery are often very successful.