Additional Campus Cluster Configuration Examples

"Campus Cluster Configuration Examples" showed two possible configurations for campus clustering: a two-room configuration using Sun StorEdge T3 partner groups, and a three-room configuration using Sun StorEdge A5x00 arrays. While detailing all of the configurations possible in campus clustering is far beyond the scope of this document, the following illustrations depict some other variations on the setups previously shown.

The following are two-room examples:

• Two-room campus cluster with Sun StorEdge T3/T3+ partner-groups and redundant switching (eight switches total) (Figure A-4)

• Two-room campus cluster with Sun StorEdge T3/T3+ arrays, single-controller configuration (Figure A-5)

• Two-room cluster using Sun StorEdge A5x00 disk arrays (Figure A-6)

The following are three-room examples:

• Three-room campus cluster with Sun StorEdge T3/T3+ partner-group arrays (Figure A-7)

• Three-room campus cluster with Sun StorEdge T3/T3+ single-controller arrays (Figure A-8)

• Three-room cluster using Sun StorEdge A5x00 disk arrays (Figure A-9)

Two-Room Examples

Figure A-1 depicted a two-room campus cluster using Sun StorEdge T3 partner groups and four Fibre Channel switches. Figure A-4 shows the same setup with four additional switches for greater redundancy and potentially better I/O throughput.

Figure A-4 Two-Room Campus Cluster (T3 Partner-Groups, 8 Switches)

Figure A-5 is similar to Figure A-1, except that it uses Sun StorEdge T3/T3+ arrays in single-controller configurations, rather than partner-groups.

Figure A-5 Two-Room Campus Cluster (Sun StorEdge T3s, Single-Controller)

Figure A-6 depicts a two-room campus cluster using Sun StorEdge A5x00s. Note the absence of switches.

Figure A-6 Two-Room Configuration (Sun StorEdge A5x00s)

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)