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
