The Ceph RGW can be deployed in a federated configuration with multiple regions, and with multiple zones for a region. As shown in the following diagram, multiple Ceph radosgw instances can be deployed in a geographically separated fashion. Configuring the Ceph object gateway regions and metadata synchronization agents helps to maintain a single namespace, even though Ceph
radosgw instances run in a different geographic locale or on a different Ceph storage cluster.
Another approach is to deploy one or more
ceph radosgw instances that are geographically separated yet are within a region in separated logical containers ...