RAID implementation

RAID implementation improves data storage reliability and performance.

Redundant array of independent disks (RAID) is a method of configuring multiple drives in a storage subsystem for high availability and high performance. The collection of two or more drives presents the image of a single drive to the system. If a single device failure occurs, data can be read or regenerated from the other drives in the array.

RAID implementation provides fault-tolerant data storage by storing the data in different places on multiple drives. By placing data on multiple drives, I/O operations can overlap in a balanced way to improve the basic reliability and performance of the attached storage devices.

Usable capacity for the storage system can be configured as RAID 5, RAID 6, or RAID 10. RAID 6 can offer excellent performance for some applications, while RAID 10 can offer better performance for selected applications, in particular, high random, write content applications in the open systems environment. RAID 6 increases data protection by adding an extra layer of parity over the RAID 5 implementation.

RAID 6 is the recommended and default RAID type for all drives over 1 TB. RAID 6 and RAID 10 are the only supported RAID types for 3.84 TB Flash Tier 1 drives and 1.92 TB, 7.68 TB, and 15.36 TB Flash Tier 2 drives.

Note: RAID 5 is not supported for drives larger than 1 TB and requires a request for price quote (RPQ). For information, contact your sales representative.