Which RAID level provides high redundancy by mirroring files?

The level of RAID that provides high redundancy by mirroring files is RAID 1. In RAID 1, data is duplicated across two or more drives, meaning that each piece of data is written identically on each drive in the array. This mirroring provides a high level of data protection because if one drive fails, the system can continue to operate using the mirrored copy on the other drive(s).

In this configuration, the focus is primarily on reliability and availability rather than increased performance or storage capacity. Because the contents are duplicated, the effective storage capacity is halved; however, this approach guarantees that critical data remains accessible in case of a hardware failure.

RAID 0, in contrast, focuses on performance through striping but does not provide any redundancy, which means data is at risk if one drive fails. RAID 5 offers a balance of performance and redundancy with striping and distributed parity information, allowing recovery from a single drive failure but not outright mirroring. RAID 10 combines elements of RAID 1 and RAID 0 by striping data across mirrored pairs, providing both performance and redundancy, but data is not simply mirrored in the same straightforward manner as RAID 1.

Overall, RAID 1 is specifically designed to ensure data