MinIO used to be the "no-brainer" for Kubernetes object storage. Then they swapped their license to AGPLv3 and moved the community version to a "maintenance-only" graveyard.
If you're building on OpenEverest, Solanica Platform or any other Cloud Native platform and want to stay completely local, you need an object storage backend that is actually open, won't demand your source code, and won't stop providing binaries when it feels like it. Here’s the blunt truth about your best alternatives.
The "Run Anywhere" Reality Check
For Solanica, "run anywhere" isn't a marketing slogan - it’s a technical requirement. In the cloud-native world, S3 is the undisputed standard for backups and modern data workloads.
1. SeaweedFS: The Small-File King
If you’re dealing with billions of small files (logs, metadata, database snapshots), SeaweedFS is your best bet. It bundles files into "volumes" to stop the "disk-seek death" that kills performance in other systems.
- The Good: Apache 2.0 license. In recent cluster tests, it crushed everyone on 4KiB objects, maintaining sub-2ms latency while others choked.
- The Bad: The UI feels like a 90s internal tool; documentation is a bit of a maze.
- Verdict: The most balanced "freedom vs. performance" choice for general OpenEverest workloads.
2. RustFS: The High-Potential Maverick
Written in Rust, it’s designed to be a faster, Apache-licensed drop-in replacement for MinIO. It’s the project every performance junkie is watching.
- The Good: On large files, it already matches MinIO’s throughput.
- The Bad: It's still in the "active hardening" phase. Stress tests at 512+ threads have triggered silent crashes that the community is still patching.
- Verdict: Use this if you want the "MinIO experience" without the legal baggage, but keep your monitoring alerts tight.
3. Ceph (via Rook): The Heavy Hitter
The "nobody ever got fired for buying IBM" of storage.
- The Good: Battle-tested at petabyte scale. Does Object, Block, and File.
- The Bad: It's a resource hog. It wants 4GB of RAM per node just to breathe.
- Verdict: Use this if you have a dedicated storage team and massive hardware.
4. Garage: The Edge Specialist
A lightweight, masterless system built in Rust. Perfect for Raspberry Pis or shaky networks.
- The Good: Ultra-low footprint (runs on 512MB RAM).
- The Bad: AGPLv3 license. This is the same legal "copyleft" trap that started the exodus from MinIO.
- Verdict: Great for edge computing; risky for building commercial SaaS products.
By The Numbers: Real-World Cluster Testing
The community looked at raw data from 4-node clusters (32 cores/128 GB RAM per node) using SATA SSDs. This is how they actually stack up when the pressure is on.
SeaweedFS is 6x faster than RustFS for tiny metadata files. If your OpenEverest backups are fragmented, SeaweedFS is a go.
RustFS catches up at 32MiB. For large database dumps, it is neck-and-neck with MinIO. Also awesome to see how receptive RustFS maintainers are and how fast they came up with the solution. The silent crashes, though, remind us that the project is in its early days and in rapid development.
The Quick Summary
The Blunt Recommendation
- For 90% of OpenEverest users: start with SeaweedFS. The benchmarks prove it - for the "messy" reality of small-file backups and metadata, it’s the most stable and performant Apache-licensed choice.
- For the performance junkies: watch RustFS. If you move massive objects and want a modern UI, RustFS is the future. Just be ready to help the community squash a few bugs.
- For the enterprise: stick with Ceph. It’s the only one that feels "too big to fail" when your data center is on fire.
- For the edge: use Garage. If you're running in a basement on a shaky network, it’s the only one that will survive. Just keep your lawyers in the loop on that license.
The era of MinIO as the default is over. Don't wait for the next license change to start migrating your plumbing.