Which RAID level offers redundancy with block-level striping and distributed parity?

RAID Level 5 is designed to provide redundancy through the use of block-level striping combined with distributed parity. In this configuration, data is split into blocks and spread across multiple drives, while an additional block is used for parity information. Parity data is stored across all drives, allowing the system to recover from the failure of one drive without losing data.

The striping approach enhances performance since it allows simultaneous access to multiple drives for read and write operations. The distributed parity feature provides fault tolerance; if one drive fails, the parity can be used to reconstruct the missing data. This means that RAID Level 5 is a balanced option for environments that require both speed and data protection.

Other RAID levels do not combine these features in the same way. For instance, RAID Level 0 provides no redundancy, only striping, while RAID Level 1 focuses on mirroring for redundancy without parity. RAID Level 6 also features block-level striping but provides double parity, which adds complexity and overhead compared to the single parity in RAID Level 5. Thus, RAID Level 5 is the correct answer due to its effective combination of block-level striping and distributed parity for redundancy.