Obstor
Obstor: A focused on-premises choice for mixed block and object replication. Ranked #19 of 25 in Storage Replication Software by our editors (7.3/10); pricing: Open source; best for open-source on-premises object replication.
At a glance
- Editor score7.3 / 10
- PricingOpen source
- Best forOpen-source on-premises object replication
- Paid fromNone
- Replication modeBoth
- Facts checked21 Sep 2026

Where it wins
- Combines block-level and bucket replication across drives, nodes, and sites
- Supports active-active failover with automatic GET/HEAD failover
- Includes IAM, versioning, retention, and SSE-C or SSE-S3 encryption
Where it doesn't
- Self-hosted deployment requires infrastructure managed by the organization
- Replication spans multiple layers, which may increase architectural complexity
- Does not include AI features
Our verdict on Obstor
Obstor is an open-source, S3-compatible object storage server for organizations running self-hosted or distributed storage infrastructure. It combines S3 and SFTP access with IAM users, groups, policies, and service accounts. Its replication scope covers both block-level replication across drives and nodes and bucket replication between clusters or sites. The platform is aimed at teams that need on-premises control over object storage, multi-site replication, and S3-compatible tooling rather than a managed storage service.
Replication is the standout capability. Obstor supports asynchronous and synchronous bucket or object replication, continuous replication, active-active configurations, automatic retries, and automatic GET/HEAD failover. Its deployment model also supports cross-site infrastructure, while Docker Compose provides a distributed deployment option. This combination suits organizations that need replication across nodes or locations and want failover orchestration included in the storage layer. Teams seeking only a simple object store may find the mixed block and bucket scope broader than necessary.
The ecosystem fit is practical for S3-oriented environments. Obstor provides an S3-compatible object storage API and works with AWS SDK, aws-cli, rclone, restic, SFTP clients, and Veeam. Built-in SFTP access adds a separate path for file-oriented workflows, while object versioning, retention support, and server-side encryption with SSE-C and SSE-S3 address common storage-control requirements. Obstor should appeal to infrastructure teams comfortable operating self-hosted systems through binaries, Docker, Docker Compose, or Kubernetes-oriented infrastructure. Organizations wanting a fully managed service or AI-oriented capabilities should choose an alternative.
Obstor pricing
Obstor fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | None |
| Replication mode | Both |
| Replication scope | Mixed |
| Continuous replication | Yes |
| Failover orchestration | Yes |
| Deployment model | On_premises |
| Protected storage limit | Not verified |
| Multi-site replication | Yes |
| Deployment | Self-hosted |
| Platforms | Web, Windows, macOS, Linux |
| Support | Docs |
| Built for | Mid-market, Enterprise (editorial estimate) |
| Integrations | 6 integrations: AWS SDK, aws-cli, rclone, restic, SFTP clients, Veeam |
| Pricing | Open source |
| Website | obstor.net |
| Facts checked | 21 Sep 2026 |
Obstor integrations
Obstor lists 6 integrations on its own site.
- AWS SDK
- aws-cli
- rclone
- restic
- SFTP clients
- Veeam
Alternatives to Obstor
- NetApp ReplicationFree NetApp replication with hybrid-cloud coverage and automated failover workflows.9.3
- Dell RecoverPointA VMware-focused platform for continuous replication, testing, failover, and recovery orchestration.9.1
- Amazon S3A metered-cost object store with versioning, lifecycle controls, and cross-region replication.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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