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6.7.2 Procedure to Convert from Transparent to Multiple-bus Failover
Mode
To change from transparent failover to multiple-bus failover mode by
resetting the unit offsets and modifying the systems’ view of the storage
units, follow these steps:
1. Shut down the operating systems on all host systems that are accessing
the HSG80 controllers you want to change from transparent failover to
multiple-bus failover mode.
2. At the HSG80, set multiple-bus failover as follows. Note that 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 known to have the good configuration
information.
3. 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
!NEWCON54 TRU64_UNIX OTHER 1 230813 OL other 0
HOST_ID=1000-0000-C920-DA01 ADAPTER_ID=1000-0000-C920-DA01
!NEWCON55 TRU64_UNIX OTHER 2 230913 OL other 100
HOST_ID=1000-0000-C920-EDEB ADAPTER_ID=1000-0000-C920-EDEB
!NEWCON56 TRU64_UNIX OTHER 2 230813 OL other 100
HOST_ID=1000-0000-C920-DA01 ADAPTER_ID=1000-0000-C920-DA01
!NEWCON57 TRU64_UNIX THIS 2 offline 100
Using Fibre Channel Storage 6–59