Final answer:
Option B: RAID level 3 has less storage overhead compared to RAID level 1, as RAID 1 duplicates all data, leading to 100% overhead, while RAID 3 uses parity, requiring less additional storage space.
Step-by-step explanation:
RAID level 3 does not have storage overhead as in RAID level 1. RAID 3 uses a dedicated parity disk and distributes data among the remaining disks, unlike RAID 1 which creates an exact copy (or mirror) of a set of data on two or more disks. This method in RAID 1 results in a 100% overhead because all data is written twice; hence, it cuts the total available capacity in half. RAID 3, however, has a more efficient way of storing data and requires less storage space for its parity information compared to the mirrored duplication of RAID 1, making it more space-efficient in terms of data storage.
RAID (Redundant Array of Independent Disks) is a data storage technology that combines multiple disk drives into a single logical unit. RAID level 3 uses data striping with dedicated parity, which provides fault tolerance by allowing for the reconstruction of data if one disk fails. Unlike RAID level 1, which mirrors the data to two or more drives, RAID level 3 does not have storage overhead. This means that RAID level 3 does not duplicate the data on multiple disks, resulting in more efficient use of storage space.