Data recovery is the process of recovering data from storage media which cannot be accessed normally. Data can be successfully recovered from a wide range of storage media formats including hard disk drives, CDs, DVDs, RAID, USB drives and SD cards. Data recovery experts classify the causes of damage to storage media as either physical damage or logical damage. If you’ve saved important data since your last data backup, storage media damage can make attempting data recovery a necessary exercise.
Physical Damage
Physical damage to storage media can take all forms from simple things scratches, mechanical failures, electrical failures through to chemical, heat and fire damage. Often physical damage causes logical damage as well (see below). Physical damage is generally not repairable by the end user and requires data recovery experts. Further damage can be caused by incorrect techniques or an inappropriate work environment (experts work in clean rooms to prevent dust damage to delicate surfaces).
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