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OpenStack+Ceph as Software-Defined Storage

SDS reduces the costs of the management of growing data stores by decoupling storage management from its hardware to allow for centralized management of cheaper, popular commodity hardware. The example SDS ecosystem uses open source software like OpenStack as a front-end interface on top of Ceph as the resource provider of a RADOS cluster of commodity solid-state drives.

OpenStack provides user-friendly wrappers for accessing and modifying underlying Ceph storage. OpenStack comes in the form of distributed microservices with RESTful API's: Block (Cinder), File (Manila), Image (Glance), and Object (Swift). Each microservice can scale-out as a cluster of stand-alone services to accommodate the varying demands of high-growth storage.

With OpenStack the underlying Ceph storage can address the block storage needs, file storage needs, image storage needs, and object storage needs of datacenters adopting open source as their new norm in an industry trend for high performace and high availability of telcom data services.

Ceph’s foundation is the Reliable Autonomic Distributed Object Store (RADOS), which provides your applications with object, block, and file system storage in a single unified storage cluster. RADOS provides extraordinary data storage scalability—thousands of client hosts or KVMs accessing petabytes to exabytes of data.

Each one of your applications can use the object, block or file system interfaces to the same RADOS cluster simultaneously. By decoupling the namespace from the underlying hardware, the Ceph can scale out using economical, commodity hardware that can be replaced when it malfunctions or fails.

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January 18, 2021 at 3:41 PM

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