6. 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.
RAID 1 provides a mirroring solution that duplicates data across two drives, ensuring that if one drive fails, the data remains intact on the other. This configuration is ideal for the technician's requirement of having a setup that can support one drive failure.
A) RAID 0
RAID 0 stripes data across multiple drives without any redundancy, which means that if one drive fails, all data is lost. This option does not meet the requirement for mirrored storage and fails to support the scenario of a single drive failure.
B) RAID 1
RAID 1 is the correct choice as it mirrors data between the two 4TB drives, ensuring data redundancy. If one drive fails, the other continues to operate, thereby meeting the requirement for fault tolerance with one drive failure.
C) RAID 5
RAID 5 requires a minimum of three drives and provides data redundancy through parity, which allows for the failure of one drive. However, it does not meet the requirement of only using two drives and is not a mirroring solution, making it unsuitable for this scenario.
D) RAID 10
RAID 10 combines striping and mirroring and requires a minimum of four drives. While it offers redundancy and performance benefits, it is not applicable here as the technician is only using two drives, making this option impractical for the stated requirements.
Conclusion
RAID 1 is the only configuration that fulfills the need for mirrored storage with two 4TB drives, allowing for one drive failure without data loss. Other options either do not provide the necessary redundancy or are not feasible with the specified number of drives. Therefore, RAID 1 is the definitive solution for this requirement.