RAID 0, also known as disk striping, is a level of RAID that distributes blocks of data to the disks within the RAID. This level of RAID can be accomplished using two or more disk drives. With RAID 0, the blocks of data are roughly distributed equally among each of the disks.

The storage capacity of the RAID volume is the total sum of the disks within the array.  For example, if there are two 4TB disk drives in a RAID 0 array, that volume can be as large as 8TB.

Advantages of RAID 0

The advantage that RAID 0 has over standard disks is an increase in disk read/write performance. With blocks of data being distributed equally among disks, a large file can be broken into smaller blocks allowing each disk to simultaneously write only a portion of the file, increasing the performance at which files can be written or read by the disks.

Disadvantages of RAID 0

With RAID 0 there is no data redundancy between disks. Thus if one disk fails within the array the entire volume is destroyed. Data recovery is then extremely difficult and data is often lost. This RAID level sacrifices fault tolerance for performance.