P21 File Documentation

Overview

Feature Value
File Extension .p21
Format Name PAR Recovery Volume
File Type Recovery file
MIME Type application/octet-stream
Primary Use Error detection and recovery
Standard Parchive (Parity Archive)
Recovery Capability Can recover one or more damaged files from a set
Redundancy Variable redundancy levels
Compression Not compressed
Encryption Not encrypted
Format Type Binary
Creation Tools PAR2 command line, MultiPar, QuickPar
Accessibility Accessible with PAR supporting software
File Identification Header signature
Used for Usenet, file distribution, backup
Compatibility Cross-platform
File Size Depends on the redundancy level
Advantages Error recovery, integrity check, flexible redundancy
Disadvantages Requires understanding of recovery process
Modularity Supports splitting into multiple volumes