Improvement in RAID

RAID is introduced to access the disks in faster rate. Implementation of RAID were like hard drive data recovery and taking into notice that, if one of the hard disks failed, still the remaining should work. Hence, the combination of hard drives into a single logical unit in a computer server increases the network availability considerably, hence, increasing the overall system's performance.

The main problems associated is that the loss of data due to disk failure, by natural disasters or by power-failure. Then, the question arises what about the data which has been lost. Data can be lost from the disks due to the above mentioned factors at the time of transmission of data from one disk to another or the disk itself fails when the data resides in it. In this paper, we are introducing the concept that describes how to retrieve the data which is being lost, by keeping in mind that it should not be so expensive and typical.