Lenovo ThinkSystem DM3000 series Hardware Installation And Maintenance Manual page 98

Step 9. Disable high availability or storage failover on each original controller:
If you have a...
Two-controller cluster
Cluster with more than two controllers
Step 10. If the original controllers are in a two-controller MetroCluster configuration, switch over storage and
client access and heal the root aggregates:
a. Check the MetroCluster status by using the m m e e t t r r o o c c l l u u s s t t e e r r s s h h o o w w command to determine
whether automatic switchover has occurred.
b. If automatic switchover has not occurred, perform a planned switchover operation from the
healthy controller by using the m m e e t t r r o o c c l l u u s s t t e e r r s s w w i i t t c c h h o o v v e e r r command.
c. Resynchronize the data aggregates by using the m m e e t t r r o o c c l l u u s s t t e e r r h h e e a a l l -phase aggregates
command from the surviving cluster.
d. Heal the root aggregates by using the m m e e t t r r o o c c l l u u s s t t e e r r h h e e a a l l -phase root-aggregates command.
e. Verify that the heal operation is complete by using the m m e e t t r r o o c c l l u u s s t t e e r r o o p p e e r r a a t t i i o o n n s s h h o o w w
command on the destination cluster.
Step 11. Reboot the controller: system node reboot -node node_name
You can suppress the quorum check during the reboot process by using the -ignore-quorum-
warnings option.
Step 12. Interrupt the reboot process by pressing Ctrl-C to display the boot menu when the system prompts
you to do so.
Step 13. From the boot menu, select (5) Maintenance mode boot to access Maintenance mode. A
message might appear asking you to ensure that the partner controller is down or takeover is
manually disabled on the partner controller. You can enter yes to continue.
Step 14. Record each original controller's system ID, which is obtained through disk ownership information
in Maintenance mode: disk show -v
You need the system IDs when you assign disks from the original controllers to the new controllers.
Example
*> disk show -v
Local System ID: 118049495
DISK OWNER
---- -----
0a.33 node1 (118049495)
0a.32 node1 (118049495)
0a.36 node1 (118049495)
...
Step 15. If you have FC or CNA port configuration, display the configuration in Maintenance mode: ucadmin
show
You should record the command output for later reference.
Example
92
ThinkSystem DM3000x and DM5000x Hardware Installation and Maintenance Guide
POOL SERIAL NUMBER
---- -------------
Pool0 3KS6BN970000973655KL
Pool0 3KS6BCKD000097363ZHK
Pool0 3KS6BL9H000097364W74
Enter...
1. cluster ha modify -configured false
2. storage failover modify -node node_name
-enabled false
storage failover modify -node node_name
-enabled false
HOME
----
node1 (118049495)
node1 (118049495)
node1 (118049495)