If five disks are used in a RAID 5 array, ____% of the available disk space stores redundant parity information.
A) 10
B) 15
C) 20
D) 25

Question

Quizplus · Accepted Answer

RAID 5 distributes parity information across all disks, except for one, which stores data. In a RAID 5 array with five disks, one disk would store parity information, leaving four disks for data storage. Therefore, 20% of the available disk space (1/5) stores the redundant parity information.

If Five Disks Are Used in a RAID 5 Array