XtreemFS

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Score6.9

Rank#8 of 29

PriceFree

Free planYes

Runs onLinux, macOS, Self-hosted, Windows

Summary

XtreemFS is a free, fault-tolerant distributed file system for general-purpose storage, available for Linux, macOS, Windows and self-hosted deployments. It replicates files across storage servers and can switch to a backup replica if the primary fails. Full or partial read-only replicas for immutable files can also be used to create caches across datacenters. The project says installations can scale to thousands of storage and metadata servers by adding or removing storage servers. POSIX compatibility lets it serve as a drop-in NFS replacement, while built-in SSL and X.509 certificate support allow it to run over the internet without a VPN, according to the site. A Hadoop client is available for using XtreemFS as an HDFS replacement. Listed uses include filer replacement, HPC and Hadoop clusters, VM block storage and cross-branch data sharing. Linux distribution packages and precompiled Windows and Mac OS X clients are provided. The FAQ gives a single-volume capacity of up to tens of millions of files and reports no known limits for volumes or services.

Who it is for

XtreemFS suits teams needing replicated, self-hosted file storage for clusters, virtual machines or sharing data across branches. It may also fit deployments seeking POSIX compatibility or a Hadoop client.

What is good

Free, open-source BSD-licensed software.
Automatic failover to backup file replicas.
Supports read-only replicas and datacenter caches.
POSIX compatibility enables NFS replacement.
SSL and X.509 support are built in.

What to know first

A single volume may contain up to tens of millions of files.
Deployment packages are listed for Linux, Windows and Mac OS X.

Verdict

XtreemFS combines file replication and failover with POSIX compatibility and several deployment options. Its listed uses range from clustered workloads to cross-branch sharing, with a stated single-volume file limit.

XtreemFS plans and pricing

All plans

XtreemFS Free Open-source BSD license · free of charge xtreemfs.org · 30 Sept 2026

Compared on distributed file system software

Free plan: Yesxtreemfs.org

Facts

Purpose: XtreemFS is a fault-tolerant distributed file system for general-purpose storage.xtreemfs.org · 30 Sept 2026
Replication: It replicates files across storage servers and can automatically fail over to a backup replica if the primary fails.xtreemfs.org · 30 Sept 2026
Read-only replicas: It supports full and partial read-only replicas for immutable files, which can be used to build a cache across datacenters.xtreemfs.org · 30 Sept 2026
Scalability: The site says an installation can scale to thousands of storage and metadata servers by adding or removing storage servers.xtreemfs.org · 30 Sept 2026
Compatibility: XtreemFS offers POSIX compatibility and can be used as a drop-in replacement for NFS.xtreemfs.org · 30 Sept 2026
Security: It has built-in SSL and X.509 certificate support, and the site says it can run over the internet without a VPN.xtreemfs.org · 30 Sept 2026
Hadoop: A Hadoop client is available for using XtreemFS as an HDFS replacement.xtreemfs.org · 30 Sept 2026
Deployment: The project provides Linux distribution packages and precompiled client packages for Windows and Mac OS X.xtreemfs.org · 30 Sept 2026
Use cases: The site lists filer replacement, HPC and Hadoop clusters, VM block storage, and cross-branch data sharing as use cases.xtreemfs.org · 30 Sept 2026
Support: Users can ask questions on the public mailing list and report bugs through the GitHub bug tracker.xtreemfs.org · 30 Sept 2026
Limit: The FAQ says a single volume may contain up to tens of millions of files; it reports no known limits for the number of volumes and services.xtreemfs.org · 30 Sept 2026
Developer: The site says XtreemFS is developed as an open-source project by Zuse Institute Berlin.xtreemfs.org · 30 Sept 2026