RAID Functions

•Striping
–Write consecutive logical byte/blocks on consecutive physical disks
•Mirroring
–Write the same block on two or more physical disks
•Parity Calculation
–Given N disks, N-1 consecutive blocks are data blocks, Nth block is for parity
–The Data Block(s) and Parity Block are written
–Destroy two or more blocks – reconstruction is not possible