RAID 5: The Parity-Based Redundancy Solution

Which RAID type utilizes a parity bit and allows for the failure of one drive without losing data?

a. RAID 1

b. RAID 2

c. RAID 3

d. RAID 5

Answer:

RAID 5 is a RAID type that utilizes a parity bit and allows for the failure of one drive without losing data.

RAID 5 is a popular choice for businesses and individuals looking for a balance of performance and data protection. By distributing data and parity information across multiple drives, RAID 5 offers fault tolerance that can handle the failure of a single drive without losing any data.

The use of parity information in RAID 5 allows for error recovery and the reconstruction of data from a failed drive. When one drive fails, the remaining drives in the array work together to rebuild the missing data and restore the system to a functional state.

Unlike RAID 1 which uses disk mirroring to duplicate data, RAID 5 offers a more efficient use of storage space while still providing redundancy against drive failures. RAID 2 and RAID 3, on the other hand, are less common and do not offer the same level of parity-based redundancy as RAID 5.

In conclusion, RAID 5 is the ideal choice for those seeking both performance and data protection. Its ability to withstand the failure of a single drive while maintaining data integrity makes it a reliable solution for various storage needs.