Use your deployment policy to define zones. Zones give
you control over shard placement in WebSphere® eXtreme Scale. Zones are a logical,
user-defined concept used to represent logical groupings of physical
servers.
Configuring zones for replica placement
Zone support allows sophisticated
configurations for replica
placement across data centers. With this capability, grids of thousands
of partitions can be easily managed using a handful of optional placement
rules. A data center can be different floors of a building, different
buildings, or even different cities or other distinctions as configured
with zone rules.
Zone-preferred routing
With zone-preferred routing, you can define
how WebSphere eXtreme Scale directs transactions
to zones.
Defining zones for container servers
Zones are collections of container servers. A container
server can belong only one zone. A container server is assigned to
a zone when it starts.