Ceph-specific information about devices and its relationship
with OSDs.
- :ref:`MDS<cephfs_add_remote_mds>`
+ MDS
The Ceph **M**\eta\ **D**\ata **S**\erver daemon. Also referred
to as "ceph-mds". The Ceph metadata server daemon must be
running in any Ceph cluster that runs the CephFS file system.
- The MDS stores all filesystem metadata.
+ The MDS stores all filesystem metadata. :term:`Client`\s work
+ together with either a single MDS or a group of MDSes to
+ maintain a distributed metadata cache that is required by
+ CephFS.
+
+ See :ref:`Deploying Metadata Servers<cephfs_add_remote_mds>`.
+
+ See the :ref:`ceph-mds man page<ceph_mds_man>`.
MGR
The Ceph manager software, which collects all the state from