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 a multipathing solution implemented(Figure E-4)

• Two-room campus cluster without a multipathing solution implemented(Figure E-5)

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

The following are three-room examples:

• Three-room campus cluster with a multipathing solution implemented(Figure E-7)

• Three-room campus cluster without a multipathing solution implemented(Figure E-8)

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

Two-Room Examples

Figure E-1 depicted a two-room campus cluster using Sun StorEdge T3 partner groups and four Fibre Channel switches. Figure E-4 shows a similar setup with a multipathing solution implemented. The four switches are added to the cluster for greater redundancy and potentially better I/O throughput. This configuration could be implemented using Sun StorEdge T3 partner groups or Sun StorEdge 9910/9960 arrays with Sun StorEdge Traffic Manager software installed.

Figure E-4 Two-Room Campus Cluster with a Multipathing Solution Implemented

Figure E-5 is similar to Figure E-1, except that it does not have a multipathing solution implemented. This configuration could be implemented using Sun StorEdge T3/T3+ arrays in single-controller configurations, rather than partner-groups.

Figure E-5 Two-Room Campus Cluster Without a Multipathing Solution Implemented

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

Figure E-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, only the Sun StorEdge A5x00 disk arrays can be used for the third, quorum room. Figure E-7 and Figure E-8 show Sun StorEdge A5x00 disk arrays in the quorum room.

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

Figure E-7 Three-Room Campus Cluster With a Multipathing Solution Implemented

Like Figure E-5, Figure E-8 depicts a campus cluster without a multipathing solution implemented. However, in Figure E-8 the quorum disk is separate, in a third room.

Because the configurations in Figure E-7 and Figure E-8 use heterogeneous storage setups (Sun StorEdge T3/T3+ or Sun StorEdge 9910/9960 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 storage arrays must also be SBus-based. Therefore, the storage array connection must be via a Sun StorEdge SBus Dual Fibre Channel Network Adapter.

Figure E-8 Three-Room Campus Cluster Without a Multipathing Solution Implemented

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

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