github.com/greenboxal/deis@v1.12.1/docs/_includes/_ceph-dependency-description.rst (about) 1 The Deis :ref:`control-plane` makes use of `Ceph`_ to provide persistent storage for 2 the :ref:`registry`, :ref:`database`, and :ref:`logger` components. The additional 3 operational complexity of Ceph is tolerated because of the need for persistent 4 storage for platform high availability. 5 6 Alternatively, persistent storage can be achieved by running an external S3-compatible 7 blob store, PostgreSQL database, and log service. For users on AWS, the convenience 8 of Amazon S3 and Amazon RDS make the prospect of running a Ceph-less Deis cluster 9 quite reasonable. 10 11 Running a Deis cluster without Ceph provides several advantages: 12 13 * Removal of state from the control plane (etcd is still used for configuration) 14 * Reduced resource usage (Ceph can use up to 2GB of RAM per host) 15 * Reduced complexity and operational burden of managing Deis 16 17 .. _`Ceph`: http://ceph.com/