doc: updated multisite docs

Fixed a minor typo in Requirements and Assumptions section.
Added an important note about running a single Ceph storage cluster for
multiple geographic locations.

Fixes: http://tracker.ceph.com/issues/26997
Signed-off-by: James McClune <jmcclune@mcclunetechnologies.net>

diff --git a/doc/radosgw/multisite.rst b/doc/radosgw/multisite.rst
index 5123905f69dc7337347aff9cca3320e2b92b3444..e7bb3efcc166d8b5355e23807e4a889becc8537d 100644 (file)
--- a/doc/radosgw/multisite.rst
+++ b/doc/radosgw/multisite.rst
@@ -63,11 +63,14 @@ A multi-site configuration requires at least two Ceph storage clusters,
 preferably given a distinct cluster name. At least two Ceph object
 gateway instances, one for each Ceph storage cluster.
 
-This guide assumes at least two Ceph storage clusters in geographically
+This guide assumes at least two Ceph storage clusters are in geographically
 separate locations; however, the configuration can work on the same
 site. This guide also assumes two Ceph object gateway servers named
 ``rgw1`` and ``rgw2``.
 
+.. important:: Running a single Ceph storage cluster is NOT recommended unless you have 
+               low latency WAN connections.
+
 A multi-site configuration requires a master zone group and a master
 zone. Additionally, each zone group requires a master zone. Zone groups
 may have one or more secondary or non-master zones.