|Deploying GemFire XD / Starting and Configuring GemFire XD Servers|
Each server that you start with the gfxd server command is configured to host data by default and is automatically added to the default server group. As you create partitioned or replicated tables in your cluster, you will also want to configure servers to participate in different server groups to control where table data is distributed.
gfxd server start -dir=./server1 -server-groups=servergroup1,servergroup2
If you use the FabricServer interface in a Java application, specify the server-groups boot property when you start the server.
After starting servers in multiple server groups, you can specify the target groups for partitioned or replicated tables in the CREATE TABLE statement for those tables. See Server Groups Overview.