Which RAID configuration does not offer any fault tolerance?

RAID 0 is characterized by data striping without redundancy, meaning it splits data into blocks and distributes them across multiple drives to enhance performance. This configuration improves speed since multiple disks can be read from or written to simultaneously. However, it does not provide any fault tolerance. If any single drive in a RAID 0 array fails, all data across the entire array becomes inaccessible, leading to complete data loss. This starkly contrasts with RAID 1, RAID 5, and RAID 6, which incorporate redundancy, allowing them to continue functioning and maintaining data integrity even if one or more drives fail.