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-rw-r--r--docs/installationprocedure/architecture.rst7
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diff --git a/docs/installationprocedure/architecture.rst b/docs/installationprocedure/architecture.rst
index c2b38d00..33536788 100644
--- a/docs/installationprocedure/architecture.rst
+++ b/docs/installationprocedure/architecture.rst
@@ -44,6 +44,7 @@ will run the following services:
- OpenDaylight
- HA Proxy
- Pacemaker & VIPs
+- Ceph Monitors and OSDs
Stateless OpenStack services
All running statesless OpenStack services are load balanced by HA Proxy.
@@ -77,6 +78,12 @@ Pacemaker & VIPs
start up order and Virtual IPs associated with specific services are running
on the proper host.
+Ceph Monitors & OSDs
+ The Ceph monitors run on each of the control nodes. Each control node also
+ has a Ceph OSD running on it. By default the OSDs use an autogenerated
+ virtual disk as their target device. A non-autogenerated device can be
+ specified in the deploy file.
+
VM Migration is configured and VMs can be evacuated as needed or as invoked
by tools such as heat as part of a monitored stack deployment in the overcloud.