RAID 50

Uses

Strong Points

Weak Points Drives

RAID 50 provides the features of both RAID 0 and RAID

5.RAID 50 includes both parity and disk striping across multiple drives. RAID 50 is best implemented on two RAID 5 disk arrays with data striped across both disk arrays. RAID 50 breaks up data into smaller blocks, and then stripes the blocks of data to each RAID 5 raid set. RAID 5 breaks up data into smaller blocks, calculates parity by performing an exclusive-or on the blocks, and then writes the blocks of data and parity to each drive in the array. The size of each block is determined by the stripe size parameter, which is set during the creation of the RAID set.

RAID 50 can sustain one to four drive failures while maintaining data integrity if each failed disk is in a different RAID 5 array.

RAID 50 works best when used with data that requires high reliability, high request rates, and high data transfer and medium to large capacity.

RAID 50 provides high data throughput, data redundancy, and very good performance.

Requires 2 to 4 times as many parity drives as RAID 5.

Six to 32

28ADAC Ultra2 S466 Hardware Guide