Three-Room Examples

The following examples all show three-room campus cluster configurations.

As mentioned in "Storage Devices", because of potential limitations with switch connectivity, Sun StorEdge T3/T3+ arrays cannot currently be used for the third, quorum room. Therefore, Figure A-7 and Figure A-8 show Sun StorEdge A5x00 disk arrays in the quorum room.

Figure A-7 is the same as Figure A-1, except that the quorum disk is separate and in a third room.

Figure A-7 Three-Room Campus Cluster (Sun StorEdge T3 Partner Groups)

Like Figure A-5, Figure A-8 uses Sun StorEdge T3/T3+ arrays in single-controller formation. However, in Figure A-8 the quorum disk is separate, in a third room.

Because the configurations in Figure A-7 and Figure A-8 use heterogeneous storage setups (Sun StorEdge T3/T3+ and Sun StorEdge A5x00 arrays), the host bus adapter types will be mixed. The Sun StorEdge A5x00 connects to the server using a SOC+-based SBus host adapter, so the server must be SBus-based, meaning that the connection to the T3/T3+ must also be SBus-based. Therefore, the T3 connection must be via a Sun StorEdge SBus Dual Fibre Channel Network Adapter.

Figure A-8 Three-Room Campus Cluster (Sun StorEdge T3 Single-Controller)

Figure A-9, like Figure A-6, depicts a campus cluster using Sun StorEdge A5x00 arrays; however, in Figure A-9, the quorum disk is now separate and in its own room.

Figure A-9 Three-Room Campus Cluster (Sun StorEdge A5x00s)