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pacific: doc/rgw: improve diagram caption #50332

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7 changes: 5 additions & 2 deletions doc/radosgw/multisite.rst
Expand Up @@ -66,10 +66,13 @@ something like this:

At the top of this diagram, we see two applications (also known as "clients").
The application on the right is both writing and reading data from the Ceph
Cluster, by means of the RADOS Gateway (RGW).
Cluster, by means of the RADOS Gateway (RGW). The application on the left is
only *reading* data from the Ceph Cluster, by means of an instance of RADOS
Gateway (RGW). In both cases (read-and-write and read-only), the transmssion of
data is handled RESTfully.

In the middle of this diagram, we see two zones, each of which contains an
instance of a RADOS Gateway (RGW). These instances of RGW are handling the
instance of RADOS Gateway (RGW). These instances of RGW are handling the
movement of data from the applications to the zonegroup. The arrow from the
master zone (US-EAST) to the secondary zone (US-WEST) represents an act of data
synchronization.
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