doc: Reworked the landing page.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>

doc/index.rst

@@ -3,34 +3,88 @@
 =================
 
 Ceph uniquely delivers **object, block, and file storage in one unified
-system**. Ceph is highly reliable, easy to manage, and free. The power of Ceph
+system**. 
+
+.. raw:: html
+
+	<style type="text/css">div.body h3{margin:5px 0px 0px 0px;}</style>
+	<table cellpadding="10"><colgroup><col width="33%"><col width="33%"><col width="33%"></colgroup><tbody valign="top"><tr><td><h3>Ceph Object Store</h3>
+
+- RESTful Interface
+- S3- and Swift-compliant APIs
+- S3-style subdomains
+- Unified S3/Swift namespace
+- User management
+- Usage tracking
+- Striped objects
+- Cloud solution integration
+- Multi-site deployment
+- Disaster recovery
+
+.. raw:: html 
+
+	</td><td><h3>Ceph Block Device</h3>
+
+
+- Thin-provisioned
+- Images up to 16 exabytes
+- Configurable striping
+- In-memory caching
+- Snapshots
+- Copy-on-write cloning
+- Kernel driver support
+- KVM/libvirt support
+- Back-end for cloud solutions
+- Incremental backup
+
+.. raw:: html 
+
+	</td><td><h3>Ceph Filesystem</h3>
+	
+- POSIX-compliant semantics
+- Separates metadata from data
+- Dynamic rebalancing
+- Subdirectory snapshots
+- Configurable striping 
+- Kernel driver support
+- FUSE support
+- NFS/CIFS deployable
+- Use with Hadoop (replace HDFS)
+
+.. raw:: html
+
+	</td></tr><tr><td>
+	
+See `Ceph Object Store`_ for additional details.
+
+.. raw:: html
+
+	</td><td>
+	
+See `Ceph Block Device`_ for additional details.
+	
+.. raw:: html
+
+	</td><td>
+	
+See `Ceph Filesystem`_ for additional details.	
+	
+.. raw::	html 
+
+	</td></tr></tbody></table>
+
+Ceph is highly reliable, easy to manage, and free. The power of Ceph
 can transform your company's IT infrastructure and your ability to manage vast
-amounts of data. Ceph delivers extraordinary scalability--thousands of clients
-accessing petabytes to exabytes of data. Ceph leverages commodity hardware and
-intelligent daemons to accommodate large numbers of storage hosts, which
-communicate with each other to replicate data, and redistribute data
-dynamically. Ceph's cluster of monitors oversees the hosts in the Ceph storage
-cluster to ensure that the storage hosts are running smoothly.
-
-.. image:: images/stack.png
-
-.. sidebar:: About Ceph
-	
-	**One Object Storage:** The Ceph Object Store, called RADOS, is the 
-	object storage component for CephFS filesystems, Ceph RADOS Gateways, and 
-	Ceph Block Devices.
-	
-	**Many Storage Interfaces:** You can use CephFS, Ceph RADOS Gateway, or Ceph 
-	Block Devices in your deployment. You may also use all three interfaces 
-	with the same Ceph Object Store cluster! There's no reason to build three 
-	different storage clusters for three different types of storage interface!
-	
-	**Use Commodity Hardware!:** You can deploy Ceph with commodity hardware. 
-	You don't need to purchase proprietary storage or networking hardware 
-	commonly used in :abbr:`SAN (Storage Area Network)` systems.
+amounts of data. To try Ceph, see our `Getting Started`_ guides. To learn more
+about Ceph, see our `Architecture`_ section.
 
 
 
+.. _Ceph Object Store: radosgw
+.. _Ceph Block Device: rbd
+.. _Ceph Filesystem: cephfs
+.. _Getting Started: start
+.. _Architecture: architecture
 
 .. toctree::
    :maxdepth: 1