SeaweedFS

SeaweedFS is an open-source Distributed File System (DFS) and object store (storage infrastructure) designed to provide horizontally scalable storage for large volumes of files and unstructured data.

• DFS and S3-compatible object store (storage infrastructure) for large-scale unstructured data
• Volume server and master server architecture for sharded file and metadata management (distributed storage)
• Support for S3 Application Programming Interface (API), FUSE mounts, and Hypertext Transfer Protocol (HTTP) access for applications and clients (storage access interfaces)
• Erasure coding and replication options for data durability and availability (data protection)
• Built-in support for clustered deployments across multiple nodes and racks (clustered storage)

More About SeaweedFS

SeaweedFS is an open-source DFS and object store (storage infrastructure) designed for storing and serving large numbers of files and large data sets across clusters of commodity servers. The project focuses on simplifying the storage of billions of files by separating metadata from file data and distributing both across multiple nodes. It targets use cases where traditional single-node file systems or monolithic storage appliances are not suitable for capacity, throughput, or fault-tolerance requirements.

The core architecture of SeaweedFS (distributed storage) is based on master servers and volume servers. Master servers coordinate metadata, manage volume assignments, and keep track of the mapping between file identifiers and physical locations. Volume servers store the actual file data in volumes, each containing large chunks that hold many small files or objects. This design reduces metadata overhead and enables SeaweedFS to handle a high file count while relying on relatively simple metadata structures.

SeaweedFS exposes multiple access interfaces (storage access interfaces), including an S3-compatible API, FUSE-based file system mounts, and HTTP-based access. The S3-compatible object store mode allows applications written for S3 to interact with SeaweedFS without major changes, which is relevant for cloud-native workloads and backup tools that depend on S3 semantics. The FUSE interface allows SeaweedFS to be mounted as a file system on Linux hosts, integrating with existing applications that expect a POSIX-like file path interface.

For data durability and availability, SeaweedFS supports replication and erasure coding (data protection). Replication creates multiple copies of volumes across different servers or racks, while erasure coding splits data into data and parity shards to reduce storage overhead compared to full replication. These approaches help enterprises design storage policies that align with their durability, capacity, and cost objectives. SeaweedFS also supports rack-aware placement to distribute replicas across failure domains.

SeaweedFS can be deployed as a cluster across on-premises (on-prem) hardware or cloud instances (clustered storage). It is suitable for workloads such as content distribution, image and media storage, log and backup archives, and general-purpose unstructured data storage. Administrators can scale capacity and throughput by adding more volume servers, while master servers can be run in clustered mode for higher availability and coordination.

From an enterprise architecture perspective, SeaweedFS fits into the object storage and DFS category. It can operate as a backend storage layer for microservices, data processing pipelines, and web applications that need horizontally scalable storage. Its S3-compatible endpoint positions it as an alternative or complement to other S3-compatible systems, while the FUSE and HTTP interfaces provide options for integration with legacy applications and custom tools.