Which of the following is a benefit of RAID 1?

RAID 1 does not offer higher capacity; it effectively halves the usable storage capacity because data is duplicated across disks.

While RAID 1 can improve read performance by allowing data to be read from either disk, its primary and guaranteed benefit is not higher performance but rather data redundancy.

RAID 1, also known as mirroring, creates an identical copy of data on two or more disks. If one disk fails, the system can continue operating using the mirrored copy, thereby providing fault tolerance and ensuring data availability.

RAID 1 typically provides fault tolerance for only a single disk failure; if both mirrored disks fail, data is lost, meaning it does not offer multiple failure fault tolerance.