Hard disk drives are different from almost every other part of your computer system in one very vital respect: if you lose your hard drive, you lose something more than a hardware- you lose your data as well as software. You can replace the hard drive, but data and information on the drive generally can not be replaced. Certainly the data is not covered by any warranty. In such cases, backup proves as a great help. However, if you do not have an updated or complete backup, data recovery solutions are required to extract your lost data.
Recovery is possible in most of the hard drive failure situations. When a file is deleted or lost due to any reason, it still remains physically intact on the drive. Lost files become inaccessible as deletion of files remove file system table entries and thus operating system can not locate the files on drive. Thus it seems the files are lost forever, but recovery solutions are there for your rescue to retrieve them.
Use of RAID (Redundant Array of Independent Disks) reduces the likelihood of data loss. However, it can complicate the situations if for any reason data loss occurs. Recovery from a failed RAID array is far complex than an individual drive. There are recovery services, which specialize in retrieving lost data from the hard drives that are failed or corrupted due to hardware problems. Such problems include read/write head crash, spindle motor damage, actuator arm damage, natural disasters, and power outages.
The data recovery services expert use specialized tools and equipments for absolute recovery. They have Clean Rooms to open the hard drive and directly access the platters for actual recovery. Even though the hard drives have stickers and labels saying that when you open the drive, the warranty is voided. It does not implement on data recovery experts.
The drive manufacturers allow them for working on drives without impacting warranty status. If data loss is caused by logical failure, such as file system corruption, virus infection, operating system malfunction, and hard drive formatting, recovery is possible in a pretty easy way. You can retrieve lost data on your own, using data recovery software. The applications are particularly designed to perform in-depth scan of the damaged drive and extract all lost, missing, deleted, and inaccessible data from it.