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 configuration utilizes two drives to create an exact mirror of the data, ensuring that if one drive fails, the data remains accessible from the other. This configuration directly supports the requirement for mirrored storage and the capability to withstand one drive failure.
A) RAID 0
RAID 0 is not suitable for this scenario as it stripes data across multiple drives without redundancy. While it maximizes storage performance and capacity, it offers no fault tolerance, meaning that if one drive fails, all data is lost.
B) RAID 1
RAID 1 is the correct choice as it mirrors the data between two drives. This setup provides a high level of data protection and meets the requirement of supporting one drive failure, ensuring that the data remains intact and accessible.
C) RAID 5
RAID 5 requires a minimum of three drives and uses striping with parity for data protection. Although it provides fault tolerance, it does not fulfill the requirement for mirrored storage with only two drives, as it cannot function correctly with just two disks.
D) RAID 10
RAID 10 combines mirroring and striping, requiring a minimum of four drives to operate effectively. While it offers excellent redundancy and performance, it does not meet the requirement of utilizing just two drives for mirrored storage.
Conclusion
RAID 1 is definitively the best option as it meets the specific criteria of having mirrored storage while allowing for one drive failure. Other options like RAID 0, RAID 5, and RAID 10 either lack the necessary redundancy, require more drives, or do not provide the mirrored configuration needed for this scenario. Thus, RAID 1 stands out as the most effective solution for the given requirements.