What is RAID LEVEL 3

The data block is subdivided "striped" and written on the data disks. Stripe parity is generated on Writes, recorded on the parity disk and checked on Reads. Stripes data at a byte level across several drives, with parity stored on one drive. It is otherwise similar to level 4. Byte-level striping requires hardware support for the most efficient use. Graphical representation of the RAID layout: Raid Level 3