Which storage type performs parity checks on data across multiple disks to recover from failures?

The selected answer is accurate because RAID 5 is specifically designed to perform parity checks across multiple disks, which allows it to recover data in the event of a single disk failure. In a RAID 5 configuration, data and parity information are striped across all disks. When a disk fails, the system can use the parity information to reconstruct the lost data from the remaining disks, ensuring continued operation and data integrity.

This method balances both performance and redundancy, making it a popular choice for systems that require fault tolerance without sacrificing too much in read/write speed. RAID 5 can efficiently recover from a single disk failure while still providing increased read speeds due to the striped nature of the data distribution.

In other configurations, such as RAID 0, data is striped across multiple disks without any redundancy measures, which results in poor fault tolerance. RAID 1 mirrors data between two disks, offering high availability but not utilizing parity or striping across multiple disks. RAID 1+0 (or RAID 10) combines mirroring and striping, providing redundancy but not using parity checks in its recovery processes. Thus, RAID 5 stands out for its unique implementation of parity for data protection.