CompTIA Server+ (SK0-004) Practice Exam

RAID 10, also known as RAID 1+0, combines the features of both RAID 1 and RAID 0. In this configuration, data is first mirrored across pairs of disks, creating a level of redundancy that protects against the failure of a single disk in each mirrored pair. After this mirroring step, the data is then striped across these mirrored sets. Striping enhances performance by allowing read and write operations to occur concurrently across the multiple disks.

This dual approach provides both fault tolerance and improved performance. In the event of a disk failure, the mirror ensures that data remains accessible, while striping enables efficient use of the available disk space across the multiple disks involved in the array.

RAID 1, on the other hand, solely focuses on mirroring and does not incorporate striping, which limits its performance benefits. RAID 0+1 also reflects a configuration where mirroring is performed, but then creates a single striped set rather than combining mirroring and striping in parallel like RAID 10 does. RAID 6 provides fault tolerance through double parity but does not involve either mirroring or striping in the same way that RAID 10 does. Hence, RAID 10 is specifically identified for its approach of mirroring first