snapraid ☆

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Description:
Backup program for disk arrays

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: System utilities

Tags: backup raid data-recovery disk-array parity

Install: brew install snapraid

About:
SnapRAID is a backup program for disk arrays that stores parity information to recover from up to six disk failures. It operates primarily in a non-real-time fashion, calculating parity on a scheduled basis rather than continuously. This makes it ideal for large, mostly-static data collections where real-time synchronization is unnecessary.

Key Features:

Supports up to 6 parity disks for high fault tolerance
Allows mixing of different disk sizes
Provides file system-level deduplication and versioning

Use Cases:

Protecting large media libraries (photos, videos)
Backup for archival data that changes infrequently
Home server data protection

Alternatives:

ZFS – ZFS offers real-time protection and volume management but requires same-sized disks and lacks flexibility in adding drives easily.
MergerFS + SnapRAID – Often used together to combine SnapRAID's protection with flexible drive pooling.

Version History

Detected	Version	Rev	Change	Commit
Sep 13, 2024 10:58pm		0	VERSION_BUMP	edece785
Jan 2, 2023 9:05am		0	VERSION_BUMP	6a52b0b0