Which type of RAID configuration offers the best redundancy?

The RAID 10 configuration, which combines the features of both RAID 1 and RAID 0, offers the best redundancy among the options presented. In this setup, data is both mirrored and striped across multiple drives. This means that not only does RAID 10 duplicate data for redundancy (as in RAID 1), but it also improves performance by distributing data across multiple disks (as in RAID 0).

With RAID 10, you can continue to operate even if one drive in each mirrored pair fails, allowing for a high level of fault tolerance. This means that even if one failure occurs in each of the mirrored sets, your data remains intact and accessible, ensuring business continuity. In summary, RAID 10 achieves both redundancy and performance, making it the superior choice for critical data storage needs where uptime and reliability are paramount.

Other configurations like RAID 1 and RAID 5 offer good redundancy, but RAID 10 excels in both redundancy and performance, further validating its position as the best option for organizations that cannot afford downtime. RAID 1 provides redundancy by copying data to a second disk, while RAID 5 combines striping with parity, offering data recovery capabilities; however, neither matches the combined strengths of RAID 10.