Self-Hosted S3-Compatible Object Storage: MinIO vs SeaweedFS vs Garage 2026

Why Self-Host Object Storage?

Cloud object storage services like AWS S3, Google Cloud Storage, and Azure Blob Storage are convenient, but they come with ongoing costs, data transfer fees, and vendor lock-in. For organizations with large data volumes, strict data residency requirements, or predictable access patterns, self-hosted S3-compatible object storage can reduce costs by 60-80% while keeping data under your direct control.

This guide compares three production-ready, self-hosted S3-compatible storage platforms: MinIO (the industry standard), SeaweedFS (a distributed file system with S3 gateway), and Garage (a lightweight, geo-distributed storage engine). Each takes a fundamentally different approach to object storage, and the right choice depends on your scale, topology, and operational expertise.

For single-node S3 storage, see our MinIO standalone guide. If you need distributed file systems beyond object storage, our JuiceFS vs Alluxio vs CephFS comparison covers POSIX-compatible alternatives. For backup storage backends, check our Restic vs Borg vs Kopia guide.

Quick Comparison Table

MinIO: The S3 Standard for Self-Hosting

MinIO is the most widely deployed self-hosted S3-compatible object storage platform. It is used by enterprises worldwide as a drop-in replacement for AWS S3, supporting the full S3 API including bucket versioning, lifecycle management, server-side encryption, and event notifications.

Key strengths:

• Full S3 API compatibility — passes the AWS S3 SDK compatibility tests, meaning any application that works with S3 works with MinIO without modification
• High performance — claims to be the fastest object storage server, with benchmarks showing 183 GB/s read and 171 GB/s write on commodity hardware
• Erasure coding — Reed-Solomon erasure coding protects against disk and node failures without the storage overhead of full replication
• Bitrot protection — automatically detects and corrects silent data corruption using checksums
• Identity management — integrates with OpenID Connect, Active Directory, and LDAP for enterprise authentication
• Rich admin console — web-based management UI for monitoring, bucket configuration, and user management
• Kubernetes native — official Kubernetes operator for automated deployment and scaling

Best for: Enterprises and teams that need full S3 API compatibility, high performance, and production-grade data protection.

Docker Compose Deployment (Single Node)

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version: "3.8"
services:
  minio:
    image: minio/minio:latest
    restart: unless-stopped
    ports:
      - "9000:9000"
      - "9001:9001"
    environment:
      - MINIO_ROOT_USER=minioadmin
      - MINIO_ROOT_PASSWORD=minioadmin_secret
    volumes:
      - minio-data:/data
    command: server /data --console-address ":9001"

volumes:
  minio-data:

Docker Compose Deployment (Distributed Erasure-Coded)

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version: "3.8"
services:
  minio1:
    image: minio/minio:latest
    restart: unless-stopped
    ports:
      - "9001:9000"
      - "9011:9001"
    environment:
      - MINIO_ROOT_USER=minioadmin
      - MINIO_ROOT_PASSWORD=minioadmin_secret
    volumes:
      - minio1-data:/data
    command: server http://minio{1...4}/data{1...2} --console-address ":9001"

  minio2:
    image: minio/minio:latest
    restart: unless-stopped
    ports:
      - "9002:9000"
    environment:
      - MINIO_ROOT_USER=minioadmin
      - MINIO_ROOT_PASSWORD=minioadmin_secret
    volumes:
      - minio2-data:/data
    command: server http://minio{1...4}/data{1...2} --console-address ":9001"

  minio3:
    image: minio/minio:latest
    restart: unless-stopped
    ports:
      - "9003:9000"
    environment:
      - MINIO_ROOT_USER=minioadmin
      - MINIO_ROOT_PASSWORD=minioadmin_secret
    volumes:
      - minio3-data:/data
    command: server http://minio{1...4}/data{1...2} --console-address ":9001"

  minio4:
    image: minio/minio:latest
    restart: unless-stopped
    ports:
      - "9004:9000"
    environment:
      - MINIO_ROOT_USER=minioadmin
      - MINIO_ROOT_PASSWORD=minioadmin_secret
    volumes:
      - minio4-data:/data
    command: server http://minio{1...4}/data{1...2} --console-address ":9001"

volumes:
  minio1-data:
  minio2-data:
  minio3-data:
  minio4-data:

This distributed setup requires at least 4 nodes and provides erasure-coded protection. Data is split across nodes so that the cluster remains operational even if up to half the nodes fail.

SeaweedFS: Distributed Storage with S3 Gateway

SeaweedFS is a distributed file system inspired by Facebook’s Haystack paper. It stores files as “volumes” managed by a central master server, with an optional S3-compatible gateway that translates S3 API calls into SeaweedFS operations.

Key strengths:

• Simple architecture — master server coordinates volume servers, making it easy to understand and operate
• Unlimited object size — unlike S3’s 5 TB limit, SeaweedFS can store objects of any size by chunking them across volumes
• Filer layer — provides a hierarchical directory structure (like a regular file system) on top of the volume store, accessible via NFS, FUSE, or WebDAV
• Active-active replication — supports multi-master replication for geo-distributed deployments
• Low resource usage — lightweight Go binary with minimal memory footprint
• Cloud tiering — can tier cold data to cloud object storage (AWS S3, GCS, Azure Blob) for cost optimization

Best for: Teams that need both S3-compatible object storage and a distributed file system, or those dealing with very large individual files.

Docker Compose Deployment

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version: "3.8"
services:
  weed-master:
    image: chrislusf/seaweedfs:latest
    restart: unless-stopped
    ports:
      - "9333:9333"
    command: master -ip.bind=0.0.0.0 -defaultReplication=001

  weed-volume:
    image: chrislusf/seaweedfs:latest
    restart: unless-stopped
    ports:
      - "8080:8080"
      - "18080:18080"
    command: volume -mserver=weed-master:9333 -ip.bind=0.0.0.0 -dir=/data -max=100
    volumes:
      - seaweedfs-data:/data

  weed-filer:
    image: chrislusf/seaweedfs:latest
    restart: unless-stopped
    ports:
      - "8888:8888"
      - "9090:9090"
    command: filer -master=weed-master:9333 -ip.bind=0.0.0.0
    depends_on:
      - weed-master
      - weed-volume

  weed-s3:
    image: chrislusf/seaweedfs:latest
    restart: unless-stopped
    ports:
      - "8333:8333"
    command: s3 -filer=weed-filer:8888 -ip.bind=0.0.0.0
    depends_on:
      - weed-filer

volumes:
  seaweedfs-data:

The S3 gateway is accessible on port 8333. Configure your S3 SDK to use http://localhost:8333 as the endpoint URL. The filer on port 8888 provides a web interface for browsing stored files.

Garage: Lightweight Geo-Distributed Storage

Garage, developed by Deuxfleurs (a French hosting cooperative), is a distributed object storage engine designed for small-to-medium deployments spread across multiple locations. It uses Rust for safety and performance and prioritizes simplicity over feature richness.

Key strengths:

• Geo-distribution first — designed from the ground up for multi-site deployments where nodes may have different network characteristics and storage capacities
• Rust implementation — memory-safe, no garbage collection pauses, predictable performance
• Simple operations — single binary, no external dependencies, SQLite for metadata
• Consistent replication — uses a custom replication protocol that works well across high-latency links
• Low overhead — minimal CPU and memory usage, suitable for deployment on small servers or Raspberry Pis
• Open governance — developed by a cooperative with transparent decision-making

Trade-offs: Garage does not support erasure coding (replication only), bucket versioning, or lifecycle policies. It is optimized for durability and availability across sites rather than maximum throughput or feature completeness.

Best for: Small-to-medium organizations with servers in multiple locations who need simple, reliable object storage without the complexity of MinIO’s distributed mode.

Docker Compose Deployment

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version: "3.8"
services:
  garage:
    image: ghcr.io/deuxfleurs-org/garage:latest
    restart: unless-stopped
    ports:
      - "3900:3900"
      - "3901:3901"
      - "3902:3902"
    volumes:
      - garage-data:/var/lib/garage
      - ./garage.toml:/etc/garage.toml
    command: garage -c /etc/garage.toml

volumes:
  garage-data:

Example garage.toml configuration:

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[replication]
mode = "3"

[s3_api]
s3_region = "garage"
api_listen_addr = "0.0.0.0:3900"

[rpc_bind_addr]
rpc_listen_addr = "0.0.0.0:3901"

[db_engine]
db_path = "/var/lib/garage/db"

[data_dir]
data_dir = "/var/lib/garage/data"

After starting the container, initialize the cluster and create a bucket:

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# Get the node token for joining additional nodes
docker compose exec garage garage token new my-node

# Create a bucket
docker compose exec garage garage bucket create my-bucket

# Assign the bucket to the cluster layout
docker compose exec garage garage bucket assign my-bucket --layout my-layout

Performance and Storage Efficiency

MinIO’s erasure coding provides the best storage efficiency — with a 4+2 configuration, you can lose 2 nodes out of 6 without data loss, using only 1.5x storage overhead. SeaweedFS and Garage use replication, which is simpler but requires 3x storage for the same fault tolerance.

Decision Framework

Choose MinIO if:

• You need full S3 API compatibility (versioning, lifecycle, encryption, notifications)
• You want the best storage efficiency through erasure coding
• You need high throughput for large-scale workloads
• You are already in the AWS ecosystem and want a drop-in replacement

Choose SeaweedFS if:

• You need both S3 object storage and a distributed file system (NFS/FUSE/WebDAV)
• You deal with very large individual files (> 5 TB)
• You want cloud tiering for cold data
• You prefer simple master/volume architecture

Choose Garage if:

• You have servers in multiple geographic locations
• You want a simple, lightweight deployment with minimal resource usage
• You value Rust’s memory safety guarantees
• You do not need advanced S3 features like versioning or lifecycle policies

Why Self-Host Object Storage?

Cost control. Cloud S3 pricing includes storage costs, API request fees, and data transfer charges. For workloads with predictable access patterns and high data volumes, self-hosted storage eliminates variable costs. A 10 TB MinIO cluster on commodity hardware costs a fraction of equivalent S3 storage over a 3-year period.

Data sovereignty. When you host your own object storage, you control exactly where data lives. This matters for regulatory compliance (GDPR, HIPAA), competitive sensitivity, and avoiding data residency issues with cloud providers that may replicate data across jurisdictions.

No vendor lock-in. S3-compatible APIs ensure your applications are portable between cloud providers and self-hosted infrastructure. MinIO, SeaweedFS, and Garage all support the same API surface, so switching between them requires only an endpoint change.

For related infrastructure topics, see our distributed file system comparison and backup strategy guide for protecting your object storage data.

FAQ

Can MinIO replace AWS S3 entirely?

For most use cases, yes. MinIO implements the full S3 API including object operations, bucket management, IAM policies, event notifications, and server-side encryption. Applications using the AWS SDK can point to a MinIO endpoint with minimal configuration changes. However, MinIO does not provide S3 services like Glacier archiving, S3 Select, or AWS Lambda event triggers — these are AWS-specific features.

Is erasure coding better than replication?

Erasure coding (used by MinIO) provides better storage efficiency — a 4+2 configuration tolerates 2 node failures with only 1.5x storage overhead. Replication (used by SeaweedFS and Garage) requires 3x storage for the same fault tolerance. However, erasure coding has higher CPU overhead during writes and rebuilds, and is more complex to operate. For small deployments, replication is simpler and often sufficient.

Can I run these on a single machine?

All three platforms support single-node deployment. MinIO runs as a single process with a data directory. SeaweedFS runs master, volume, filer, and S3 gateway on one host. Garage runs as a single binary. Single-node mode is suitable for development, testing, and small-scale production where data redundancy is handled by disk-level RAID or external backups.

How does Garage compare to Ceph for geo-distribution?

Ceph is a full-featured distributed storage system that supports block, file, and object storage. It is powerful but complex to operate. Garage is purpose-built for object storage only, with a much simpler operational model. For teams that need only S3-compatible storage across multiple sites, Garage is significantly easier to deploy and maintain than Ceph.

Do these platforms support encryption at rest?

MinIO supports server-side encryption (SSE-S3 and SSE-KMS). SeaweedFS supports encryption in transit (TLS) and can encrypt volumes at rest. Garage encrypts data at rest using its internal encryption layer. For all three, encrypting data in transit via TLS is recommended and straightforward to configure.

What happens when a node fails in a distributed cluster?

In MinIO’s erasure-coded mode, the cluster continues serving reads and writes as long as enough nodes remain (a 4+2 setup needs at least 4 nodes). Parity data is automatically rebuilt when the failed node is replaced. In SeaweedFS and Garage’s replicated mode, the cluster continues serving requests from remaining replicas. New writes are replicated to surviving nodes until the failed node is restored.