Which of the following RAID levels satisfies this requirement?

A systems administrator is deploying a new storage array for backups. The array provides 1PB of raw

disk space and uses 14TB nearline SAS drives. The solution must tolerate at least two failed drives in a single RAID set.

Which of the following RAID levels satisfies this requirement?
A . RAID 0
B . RAID 1
C . RAID 5
D . RAID 6
E . RAID 10

View Answer

Answer: D

Explanation:

RAID 6 is a type of RAID level that uses block-level striping with two parity blocks distributed across all member disks. RAID 6 can provide redundancy and fault tolerance, as it can survive the failure of up to two disks without losing any data. RAID 6 can also support large data sets and high-capacity disks, as it can offer more usable space and better performance than other RAID levels with similar features, such as RAID 5 or RAID 10. RAID 6 is the best RAID level for a systems administrator to use when deploying a new storage array for backups that provides 1PB of raw disk space and uses 14TB nearline SAS drives and must tolerate at least two failed drives in a single RAID set.

Reference: CompTIA Cloud+ Certification Exam Objectives, page 9, section 1.4