Method and system using checksums to repair data

A system, comprising:

• a processor;
• and a computer usable storage medium having computer readable program code embodied therein, the computer readable program code adapted to, when executed by the processor, implements a method, the method comprising:
• determining a number of non-parity disks (n);
• selecting a first combination of n-1 non-parity disks;
• obtaining a first set of physical blocks from the first combination of n-1 non-parity disks;
• obtaining a parity block associated with the first set of physical blocks;
• reconstructing a first physical block using the first set of physical blocks and the parity block;
• combining the first physical block and the first set of physical blocks to obtain a first reconstructed logical block;
• checksuming the first reconstructed logical block to obtain a first calculated checksum;
• and determining whether the first calculated checksum is equal to a stored checksum associated with the first reconstructed logical block.