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+===============
+ Configuration
+===============
+
+Ceph can run with a cluster containing thousands of Object Storage Devices
+(OSDs). A minimal system will have at least two OSDs for data replication. To
+configure OSD clusters, you must provide settings in the configuration file.
+Ceph provides default values for many settings, which you can override in the
+configuration file. Additionally, you can make runtime modification to the
+configuration using command-line utilities.
+
+When Ceph starts, it activates three daemons:
+
+- ``ceph-mon`` (mandatory)
+- ``ceph-osd`` (mandatory)
+- ``ceph-mds`` (mandatory for cephfs only)
+
+Each process, daemon or utility loads the host's configuration file. A process
+may have information about more than one daemon instance (*i.e.,* multiple
+contexts). A daemon or utility only has information about a single daemon
+instance (a single context).
+
+.. note:: Ceph can run on a single host for evaluation purposes.
+
+
+.. raw:: html
+
+	<table cellpadding="10"><colgroup><col width="50%"><col width="50%"></colgroup><tbody valign="top"><tr><td><h3>Configuring the Object Store</h3>
+
+For general object store configuration, refer to the following:
+
+.. toctree::
+   :maxdepth: 1
+
+   Storage devices <storage-devices>
+   ceph-conf
+
+
+.. raw:: html 
+
+	</td><td><h3>Reference</h3>
+
+To optimize the performance of your cluster, refer to the following:
+
+.. toctree::
+   :maxdepth: 1
+
+   Network Settings <network-config-ref>
+   Auth Settings <auth-config-ref>
+   Monitor Settings <mon-config-ref>
+   mon-lookup-dns
+   Heartbeat Settings <mon-osd-interaction>
+   OSD Settings <osd-config-ref>
+   BlueStore Settings <bluestore-config-ref>
+   FileStore Settings <filestore-config-ref>
+   Journal Settings <journal-ref>
+   Pool, PG & CRUSH Settings <pool-pg-config-ref.rst>
+   Messaging Settings <ms-ref>
+   General Settings <general-config-ref>
+
+   
+.. raw:: html
+
+	</td></tr></tbody></table>