About Woodstock Backup

Woodstock Backup is a centralized backup solution designed to efficiently back up multiple hosts to a central server. With advanced deduplication, storage space is optimized.

Architecture and Technologies

Woodstock Backup combines several modern technologies to offer a robust backup solution:

• Client-server architecture: The server contacts clients to initiate backups, simplifying configuration and enhancing security
• Technologies: Primarily developed in JavaScript (NodeJS for the server and Vue for the interface), with critical components in Rust for performance
• Optimized storage: Uses a sophisticated chunk-based deduplication system with Blake3 hashing, organizing data in a hierarchical pool structure
• Security: Mutual TLS (mTLS) authentication and JWT tokens to secure communications

Woodstock Backup is open-source software distributed under the MIT license.

Key Features

• Modern interface with accessible API to launch, manage and monitor backups
• Native Windows compatibility without requiring rsync or SSH, works natively with all operating systems
• Block-based deduplication: Files are divided into 16 MB blocks (chunks) to optimize storage
• Cryptographic hashing system: Using Blake3 to identify and verify the integrity of data blocks
• FUSE filesystem access allowing you to mount any backup point as a normal directory
• Support for extended attributes and ACLs to preserve all file metadata
• Backup of computers with dynamic IP or intermittently connected to the network

Technical Architecture

Storage Pool Structure

The storage uses a "pool" system organized based on data block hashes:

• Chunks (blocks) are identified by their Blake3 hash
• Three-level hierarchical organization to optimize access
• Reference counting system to track block usage
• Optimized binary format (Protocol Buffers) for backup manifests

Authentication and Security

Security is based on multiple layers:

• mTLS certificates generated for each client device
• JWT tokens for application-level authentication
• Integrity verification based on cryptographic hashes

Why Woodstock Backup?

Woodstock Backup was developed to solve two major limitations of traditional backup solutions:

• Simplified Windows backups without dependency on rsync or SSH
• Easy access to backup data through FUSE filesystem mounting

Screenshots

Here are some screenshots of the Woodstock Backup web interface that provide an overview of the different features.