Abstract: The disk array techniqne is an efficient way to break the I/0 bottleneck of the computer system,and is widely studied and developed recently in the world.In order to increase the reliability of the disk array, this paper proposes a new kind of disk array-RAID7 (Redundant Array of Inexpensive Disks level seve),in which the data store unit of the array is coded using the extended Hamming code.It gives high data availability and high system reliability.

Key words: extended hamming code, computer I/0 bottleneck, redundant structure, disk array