LinuxCon North America/CloudOpen North America

Ceph is a fully open source distributed object store, network block device, and file system designed for reliability, performance, and scalability from terabytes to exabytes. For many organizations, storage systems that span multiple data centers and geographies for disaster recovery or follow-the-sun purposes are an important requirement. This talk will give a brief overview of the Ceph architecture, and then focus on the design and implementation of asynchronous geo-replication and disaster recovery features for the RESTful object storage layer, the RBD block service, and Ceph's underlying distributed object store, RADOS. The fundamental requirements for a robust georeplication solution (like point in time consistency) and the differing requirements for each storage use-case and API and the implications for the asynchronous replication strategy will be discussed.