Technical data

2. At the HSG80, set multiple-bus failover as follows. Before putting the
controllers in multiple-bus failover mode, you must remove any previous
failover mode:
HSG80> SET NOFAILOVER
HSG80> SET MULTIBUS_FAILOVER COPY=THIS
____________________ Note _____________________
Use the controller that you know has the good configuration
information.
3. If this HSG80 is being used in an arbitrated loop topology (port topology
is set to LOOP_HARD), you need to set a unique AL_PA address for
each port because all of the ports can be active at the same time. (The
convention in transparent failover mode is to use the same AL_PA
address for Port 1 on both controllers and the same AL_PA address for
Port 2 on both controllers.)
The following example sets the ports on two HSG80 controllers off line,
sets the PORT_
x_AL_PA value for multiple-bus failover mode, and sets
the ports on line.
HSG80> set this port_1_topology = offline
HSG80> set this port_2_topology = offline
HSG80> set other port_1_topology = offline
HSG80> set other port_2_topology = offline
HSG80> set this PORT_1_AL_PA = 01
HSG80> set this PORT_2_AL_PA = 02
HSG80> set other PORT_1_AL_PA = 04
HSG80> set other PORT_2_AL_PA = 08
4. Execute the SHOW CONNECTION command to determine which
connections have a nonzero offset as follows:
HSG80> SHOW CONNECTION
Connection Unit
Name Operating system Controller Port Address Status Offset
!NEWCON49 TRU64_UNIX THIS 2 230813 OL this 100
HOST_ID=1000-0000-C920-DA01 ADAPTER_ID=1000-0000-C920-DA01
!NEWCON50 TRU64_UNIX THIS 1 230813 OL this 0
HOST_ID=1000-0000-C920-DA01 ADAPTER_ID=1000-0000-C920-DA01
!NEWCON51 TRU64_UNIX THIS 2 230913 OL this 100
HOST_ID=1000-0000-C920-EDEB ADAPTER_ID=1000-0000-C920-EDEB
!NEWCON52 TRU64_UNIX THIS 1 230913 OL this 0
HOST_ID=1000-0000-C920-EDEB ADAPTER_ID=1000-0000-C920-EDEB
!NEWCON53 TRU64_UNIX OTHER 1 230913 OL other 0
HOST_ID=1000-0000-C920-EDEB ADAPTER_ID=1000-0000-C920-EDEB
6–78 Using Fibre Channel Storage