Data Recovery Software for RAID
Data recovery software should be used very carefully when RAID systems are involved. RAID is a complex configuration of multiple hard disks that is designed to enhance both disk performance and fault tolerance. It also uses a complex logic for managing the data.
The Complexity of RAID
Physically, the RAID consists of several independent hard disks, controlled by a single RAID controller. Logically, RAID presents a single data view to the computer system. The logic ensures that disk operations are so distributed among the different drives that one drive is not overloaded. The logic is also designed to help the system continue operating even if one of the drives fails.
RAID systems thus accommodate some built-in data recovery. However, if more than one disk fails, data can become inaccessible and data recovery procedures become necessary. Data loss can also occur owing to other factors such as RAID controller failure, array formatting and partition corruption.
Data Recovery Under RAID
If RAID data gets lost, it cannot be simply recovered by running any data recovery software or by replacing the controller. You have to rebuild the logical array and identify certain parameters, such as drive order and block size, to start recovering the files. If file recovery is attempted without proper parameters, very serious errors can occur and the data can become irrecoverable.
Highly trained professionals, working by hand, typically do the reconstruction of the RAID's logical array painstakingly. New data recovery software for RAID claims the ability to identify the parameters to be used for reconstructing the files.
Data Recovery Software for RAID