- **OSDs**: Object Storage Daemons (OSDs) store data, handle data replication,
recovery, backfilling, rebalancing, and provide some monitoring information
- to Ceph monitors by checking other OSDs for a heartbeat.
+ to Ceph monitors by checking other OSDs for a heartbeat. A cluster requires
+ at least two OSDs to achieve an ``active + clean`` state.
- **Monitors**: Ceph monitors maintain maps of the cluster state, including
the monitor map, the OSD map, the Placement Group (PG) map, and the CRUSH
map. Ceph maintains a history (called an "epoch") of each state change in
- the monitors, OSDs, or PGs.
+ the monitors, OSDs, and PGs.
- **MDSs**: Metadata Servers (MDSs) store metadata on behalf of the CephFS
filesystem (i.e., Ceph block devices and Ceph gateways do not use MDS).
.. raw:: html
<style type="text/css">div.body h3{margin:5px 0px 0px 0px;}</style>
- <table cellpadding="10"><colgroup><col width="25%"><col width="25%"><col width="25%"><col width="25%"></colgroup><tbody valign="top"><tr><td><h3>Step 1: Preflight</h3>
+ <table cellpadding="10"><colgroup><col width="33%"><col width="33%"><col width="33%"></colgroup><tbody valign="top"><tr><td><h3>Step 1: Preflight</h3>
+
+Client and server machines may require some basic configuration work prior to
+deploying a Ceph cluster. You can also avail yourself of help from the Ceph
+community by getting involved.
.. toctree::
.. raw:: html
</td><td><h3>Step 2: Object Store</h3>
+
+Once you've completed your preflight checklist, you should be able to begin
+deploying a Ceph cluster.
.. toctree::
.. raw:: html
</td><td><h3>Step 3: Ceph Client(s)</h3>
+
+Most Ceph users don't store objects directly. They typically use at least one of
+Ceph block devices, the CephFS filesystem, and the RESTful gateway.
.. toctree::
Gateway Quick Start <quick-rgw>
-.. raw:: html
-
- </td><td><h3>Step 4: Expand Your Cluster</h3>
-
- <placeholder>
-
.. raw:: html
</td></tr></tbody></table>
+For releases prior to Cuttlefish, see the `5-minute Quick Start`_ for deploying with `mkcephfs`_.
+.. _5-minute Quick Start: quick-start
+.. _mkcephfs: ../rados/deployment/mkcephfs
.. toctree::
+ :hidden:
+
+ quick-start