Part I. Host Recommendations

Generally, we recommend running Ceph daemons of a specific type on a host configured for that type of daemon. We recommend using other hosts for processes that utilize your data cluster (e.g., OpenStack, CloudStack, etc).

How you select and configure a Ceph OSD host has a lot to do with how you intend to use the OSDs on it (e.g., for OpenStack volumes and images, for an S3 gateway, for a fast SSD pool or cache tier, etc.). See the Ceph’s Storage Stragegies Guide for details about defining storage strategies for your Ceph use case(s) and use these recommendations to help define your host requirements.