IBM N7800 Hardware And Service Manual page 138

Manually reassigning the system ID on a stand-alone system operating in
7-Mode:
In a stand-alone system, you must manually reassign disks to the new controller's
system ID before you return the system to normal operating condition.
About this task
This procedure applies only to systems that are:
v Operating in 7-Mode.
v In a stand-alone system.
Procedure
1. If you have not already done so, reboot the replacement node, interrupt the
2. View the system IDs by entering the following command:
3. Reassign disk ownership (for filer systems) or LUN ownership (for gateway
4. Verify that the disks (or gateway LUNs) were assigned correctly by entering the
112
IBM System Storage: N7000 Series Hardware and Service Guide
boot process by entering Ctrl-C, and then select the option to boot to
Maintenance mode from the displayed menu. You must enter Y when prompted
to override the system ID due to a system ID mismatch.
disk show -a
Note: Make note of the old system ID, which is displayed as part of the disk
owner column.
The following example shows the old system ID of 118073209:
*> disk show -a
Local System ID: 118065481
DISK OWNER
-------- -------------
0b.29 system-1 (118073209) Pool0 J8XJE9LC
0a.27 system-1 (118073209) Pool0 J8Y478RC
.
.
.
systems) by using the system ID information obtained from the disk show
command:
disk reassign -s old system ID
In the case of the preceding example, the command is:
disk reassign -s 118073209
You can respond Y when prompted to continue.
following command:
disk show -a
Make sure that the disks belonging to the replacement node show the new
system ID for the replacement node. In the following example, the disks owned
by system-1 now show the new system ID, 118065481:
POOL SERIAL NUMBER HOME
----- ------------- -------------
system-1 (118073209)
system-1 (118073209)