Final answer:
The question addresses RAID 5, a type of storage configuration that combines data striping and parity for fault tolerance. If a disk fails, the RAID controller can reconstruct the lost data onto a hot spare using the stored parity information.
Step-by-step explanation:
The question concerns RAID 5, which is a storage technology used in computer systems. RAID 5 is well-regarded for its balance between storage efficiency, performance, and fault tolerance. It stripes data and parity information across all the disks in the array. When a disk fails, the RAID controller uses the parity data to reconstruct the lost information onto a new disk, often a hot spare that is kept for such emergencies. This reconstruction process is crucial as, without the parity, it would be impossible to recover the data that was on the failed disk.