71. A technician is commissioning a workstation that is required to have mirrored storage, utilizing two 4TB drives that support one failure. Which of the following best meets these requirements?
Answer: B
RAID 1 best meets the requirements for mirrored storage with one drive failure tolerance.
RAID 1 utilizes two drives to create an exact copy or mirror of the data on each drive. This configuration ensures that if one drive fails, the data remains accessible from the other drive, precisely aligning with the requirement for mirrored storage and support for one drive failure.
A) RAID 0
RAID 0 splits data across multiple drives for improved performance but does not offer any redundancy. In this configuration, if one drive fails, all data is lost, making it unsuitable for a setup that requires fault tolerance.
B) RAID 1
RAID 1 is the correct choice as it mirrors the data across two drives, providing high data availability. This configuration meets the requirement for mirrored storage and allows for one drive failure without data loss.
C) RAID 5
RAID 5 requires a minimum of three drives and uses striping with parity for fault tolerance. While it can handle one drive failure, it does not provide the mirrored storage required in this scenario, making it an inappropriate choice.
D) RAID 10
RAID 10 combines the features of RAID 1 and RAID 0 but requires at least four drives. Although it does provide redundancy and improved performance, it exceeds the specified requirement of using only two drives for mirrored storage.
Conclusion
RAID 1 is definitively the best option as it fulfills the requirement for mirrored storage while allowing for one drive failure. Other options either lack redundancy, do not meet the drive count requirement, or do not provide the necessary mirroring needed for this situation. Thus, RAID 1 stands out as the optimal solution for the technician's needs.