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OpenStack Swift

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description OpenStack Swift Overview

OpenStack Swift is a distributed object storage system that provides scalable and durable storage for unstructured data by dividing data into objects and storing them across multiple servers in an active-active cluster.

help OpenStack Swift FAQ

How does OpenStack Swift replicate objects across servers?

Swift uses distributed replicas and background replicator processes to reconcile differences between nodes. Its documentation explains that replicas operate independently and that a simple majority of nodes can generally determine whether an operation succeeds.

Does OpenStack Swift use Amazon S3's API?

Swift has its own native REST API and object-storage concepts, including accounts, containers, and objects. S3 compatibility can be added through middleware or gateways, but Swift is not simply Amazon S3 running on private hardware.

What happens when a Swift storage node temporarily fails?

The replication system can use alternate nodes from the ring to synchronize data when a remote drive is unavailable. Swift is designed to repair temporary divergence asynchronously, although a complete node failure can require additional recovery work.

How is Swift different from Ceph Object Gateway?

OpenStack Swift is a dedicated distributed object-storage system built around its own proxy, ring, container, and object services. Ceph is a broader storage platform that can expose object storage through the RADOS Gateway, so the better choice depends on whether the deployment also needs Ceph block or file storage.

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