RAID30 is also called Striping of Dedicated Parity Arrays which has features of RAID0 and RAID 3. It is an array composed of two RAID 3(each contains 3 disks) and has exclusive parity bit. And these two kinds of disks form a RAID 0 array, realizing crossing disk extraction of data. RAID provides Fault-Tolerant function and supports larger volumes. As RAID 10, RAID 30 also provides high reliability. Even two physical disks (one in each array) fail at the same time, the data is also available. In RAID 30, 6 drivers are needed at least. It is most suitable for non-interactive applications such as handling of video streaming, graphics and images. These application programs handle large files orderly and demand high reliability and speed.