What type of RAID configuration uses parity memory for redundancy?

RAID 5 is indeed the configuration that utilizes parity for redundancy. In this setup, data is divided into blocks and distributed across multiple disks, with an additional parity block calculated and stored on a different disk. This parity information allows the system to reconstruct lost data from any one of the drives in the event of a failure. This makes RAID 5 a highly efficient solution for balancing performance, storage efficiency, and fault tolerance.

The ability to recover data using parity is a key feature that sets RAID 5 apart from others. For example, RAID 1 mirrors data across two drives, providing redundancy but without the efficient use of storage space that parity offers. RAID 0 does not provide redundancy at all as it stripes data across multiple disks without any fault tolerance. RAID 10, while offering redundancy, combines mirroring and striping but does not utilize parity in the same way RAID 5 does. Thus, RAID 5 stands out for its effective use of parity to achieve both data integrity and optimal storage utilization.