sentences:  RAID levels and their associated data formats are standardized by the Storage Networking Industry Association (SNIA) in the Common RAID Disk Drive Format (DDF) standard.The numerical values only serve as identifiers and do not signify performance, reliability, generation, or any other metric.While most RAID levels can provide good protection against and recovery from hardware defects or defective sectors/read errors ("hard errors"), they do not provide any protection against data loss due to catastrophic failures (fire, water) or "soft errors" such as user error, software malfunction, or malware infection.