moosefs

Files are stored in multiple configurable copies across separate servers, ensuring no single point of failure and robust data protection against hardware failures.

Capacity can be expanded or reduced on the fly by adding or removing servers and disks, as highlighted in the README under distinctive features, allowing seamless growth.

Supports hierarchical directory trees, file attributes, ACLs, distributed file locks, and special files, making it behave exactly like a traditional Unix file system for compatibility.

Includes a file system-level trash bin for deleted files and atomic snapshots, providing recovery options and coherent backups without interrupting access.

Allows limiting access based on IP address and password, and offers per-directory project quotas for space and inodes, aiding in resource management and security.