XtreemFS – fault-tolerant distributed file system

XtreemFS is an object-based distributed file system designed to provide shared storage across multiple servers and locations. Its architecture separates directory information, file metadata and stored file contents into distinct services.

The system uses a Directory Service to locate components, Metadata and Replica Catalogues to manage filesystem metadata, and Object Storage Devices to hold file data. This design supports deployments ranging from local clusters to geographically separated storage sites.

It supports workloads such as shared directories, research data and access to files across organisational sites. Development has been relatively quiet, so organisations considering new deployments should assess client compatibility and maintenance requirements carefully.

This is free and open source software.

Key Features

• Provides shared filesystem access through client mounts.
• Supports file striping across Object Storage Devices for parallel data access.
• Offers file replication to protect data against storage server failures.
• Supports geographically distributed replicas for access from different sites.
• Provides configurable consistency semantics for concurrent file operations.
• Offers automatic failover between eligible replicas.
• Supports partial replicas that retrieve file data on demand.
• Provides POSIX-style file permissions and access controls.
• Supports encrypted connections using SSL and X.509 certificates.
• Includes a Hadoop filesystem integration for suitable data processing workloads.
• Offers configurable authentication and replica-selection policies through plugins.

Website: www.xtreemfs.org
Support:
Developer: Zuse Institute Berlin and contributors
License: BSD 3-Clause ‘New’ or ‘Revised’ License

XtreemFS is written in Java. Learn Java with our recommended free books and free tutorials.

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