mergerfs is a union filesystem geared towards simplifying storage and management of files across numerous commodity storage devices.
Best aufs Alternatives ranked by AI · updated May 2025
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Advanced multi-layered unification filesystem for Linux
Price: Free
Top 3 aufs alternatives
2
mhddfs
mhddfs contributors
mhddfs is a FUSE-based filesystem for presenting multiple directories or mount points as one unified tree on Linux. It distributes newly created...
Pros
- Pools existing directories without reformatting their filesystems
- Uses a simple FUSE mount and familiar POSIX directory layout
- Can keep data accessible on individual source drives
Cons
- Less actively maintained and feature-rich than mergerfs
- FUSE overhead can reduce performance compared with kernel filesystems
- Limited policies and filesystem-management features
3
Union filesystem for Linux, FreeBSD and NetBSD
Pros
- Supports multiple branches
- Advanced caching options
Cons
- Complex setup
- Limited documentation
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