Silicon Graphics TP9100, Installation Instructions And User Manual

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3: Using TPM
Supported SAN Mapping Topologies
The model of controller you use dictates what SAN Mapping topologies are supported.
This manual covers all three possibilities (Inactive Port, MultiPort, and Multi-TID). Only
one type of SAN topology can be active, and any changes to a topology requires a reboot
for it to become effective. The topologies are:
• Inactive Port—in this topology, Controller0/Port0 and Controller1/Port1 are active.
During failover, the inactive port on the partner takes over for the active port on the
failed controller.
• MultiPort
1
—in this topology, all ports are active. This topology does not provide
transparent failover or failback and requires an alternate path driver to the host.
• Multi-TID—in this topology, all ports are active. This topology provides transparent
failover and failback, but should not be used in conjunction with an alternate path
driver.
This manual is not designed to be a tutorial on the strengths, weaknesses, and required
external hardware configuration to use for each topology for the various operating
systems. The documentation here merely covers how to configure each of them.
To display the SAN Logical Drive Map for controllers with 6.14 firmware, click the SAN
Map button on the Configure Host to LUN Mapping screen (see Figure 3-44 on page 76).
The screen shown in Figure 3-46 appears.
Note: For controllers with 7.01 and later firmware, the SAN Logical Drive Map appears
when the Configure Host -to-LUN item on the Configuration Functions portion of the
main menu ( see Figure 3-1 on page 22) is selected.
1 The SGI-recommended setting is MultiPort