Figure 10: Onboard Administrator Window showing Device Bay 7 Port Mapping

From the Port Mapping view, the embedded network ports, FC HBA ports from Mezzanine Slot 1 and Ethernet ports from Mezzanine Slot 2 are shown mapped to their respective interconnect bay ports. Note in this example configuration, ports 3 and 4 of the Quad-Port Mezzanine HBA are not mapped because there are no interconnect modules in enclosure interconnect bays 7 and 8. Although these ports are unavailable, the LOM ports on the blade server provide network redundancy, while at least two ports of the Quad-Port Mezzanine card can provide additional network connectivity.

To utilize the redundant components available for the server blade in this configuration example, a Virtual Connect server profile has been created as shown in figure 11. The server profile has been configured to use LOM port 1 for the primary site LAN and LOM port 4 for the private Serviceguard heartbeat LAN, with are assigned to interconnect bays 1 and 2, respectively. Note that LOM ports 2 and 3 were not used in this case because the standby site and secondary heartbeat LAN connections have been configured to use the Ethernet ports on the Mezzanine Card Slot 2, which are assigned to interconnect bays 5 and 6. If no additional Ethernet Mezzanine cards were available, all 4 internal ports could have been used to achieve a redundant network configuration by using ports 1 and 4 as the primary/standby pair for the site network and ports 2 and 3 as primary/standby pair for the Serviceguard heartbeat network. This configuration now provides Ethernet hardware redundancy for both the site and Serviceguard heartbeat LANs. In the event of either a LOM, Ethernet Mezzanine card, or interconnect module failure, Serviceguard can recover from the failure by performing a local LAN failover.

Since this configuration only has one 2-port Fiber Channel Mezzanine HBA installed in Mezzanine Slot 1, it is only possible to configure the server profile to use each port assigned to interconnect bays 3 and 4. Although a 2nd Fiber Channel Mezzanine card is not available, the ports of the one Fiber Channel Mezzanine card are using separate interconnect modules, thus eliminating the interconnect modules as a potential SPOF. However; for the highest level of availability, it is a recommended best practice to use two Fiber Channel Mezzanine cards for compete redundancy.

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