Ceph vs SeaweedFS
A side-by-side comparison of two self-hosted file sync & storage options — licensing, setup difficulty, resource needs, and what each one replaces.
Ceph
Distributed object, block, and file storage platform
VS
SeaweedFS
Fast distributed storage for blobs and files
| Feature | Ceph | SeaweedFS |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 94 · Excellent | 98 · Excellent |
| Category | File Sync & Storage | File Sync & Storage |
| License | LGPL-2.1 | Apache-2.0 |
| Language | C++ | Go |
| Setup difficulty | Hard | Hard |
| Min. RAM | 4,096 MB | 512 MB |
| Deployment | docker, kubernetes, bare-metal | docker, kubernetes, binary |
| GitHub stars | ★ 17,066 | ★ 34,909 |
| First released | 2006 | 2015 |
| Replaces | Amazon S3, Google Drive | Amazon S3 |
What are Ceph and SeaweedFS?
Ceph
Ceph is a highly scalable distributed storage system that provides object, block, and file storage in a unified cluster. It is designed for fault tolerance with no single point of failure.
- Unified object, block, and file storage
- Self-healing and self-managing
- Massive scalability
SeaweedFS
SeaweedFS is a simple and highly scalable distributed file system that stores billions of files quickly. It offers an S3-compatible API and supports tiered cloud storage.
- Stores billions of small files
- S3-compatible API
- Cloud tiering support
Ceph vs SeaweedFS: key differences
Ceph is written in C++, while SeaweedFS is built with Go. Licensing differs — LGPL-2.1 for Ceph versus Apache-2.0 for SeaweedFS. SeaweedFS is the lighter option, starting around 512 MB of RAM against 4,096 MB for Ceph. Ceph is the more established project (first released 2006), while SeaweedFS arrived in 2015. SeaweedFS has the considerably larger community, at 34,909 GitHub stars versus 17,066.
Why pick each one
Choose Ceph if…
- Object, block and file
- No single failure point
- Massive proven scalability
Watch out for
- Steep operational complexity
- Needs multiple nodes
- High hardware requirements
Choose SeaweedFS if…
- Scales to billions of files
- S3-compatible API
- Fast small-file storage
Watch out for
- Complex cluster architecture
- Ops expertise required
Frequently asked questions
Is Ceph or SeaweedFS better?
Neither is universally better. SeaweedFS has the larger community; both share a hard setup difficulty, so the decision comes down to features and licensing.
Are Ceph and SeaweedFS free and open-source?
Yes. Ceph is licensed under LGPL-2.1 and SeaweedFS under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Ceph and SeaweedFS with Docker?
Ceph: yes. SeaweedFS: yes.
Which is lighter on resources, Ceph or SeaweedFS?
SeaweedFS has the smaller minimum footprint at 512 MB of RAM, compared to about 4,096 MB for Ceph. Real-world usage depends on library size, user count, and enabled features.