Option 1: Most configurations
To shut down the impaired controller, you must determine the status of the controller
and, if necessary, take over the controller so that the healthy controller continues to
serve data from the impaired controller storage.
About this tasks
If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in quorum or a
healthy controller shows false for eligibility and health, you must correct the issue before shutting down
the impaired controller.
ONTAP 9 System Administration Reference
You might want to erase the contents of your caching module before replacing it.
Steps
1. Although data on the caching module is encrypted, you might want to erase any data from the
impaired caching module and verify that the caching module has no data:
a.
Erase the data on the caching module:
system controller flash-cache secure-erase
run -node node_name -device-id device_id
b.
Verify that the data has been erased from the caching module:
system controller flash-
cache secure-erase show -node node_name
The output should display the caching module status as erased.
2. If AutoSupport is enabled, suppress automatic case creation by invoking an AutoSupport message:
system node autosupport invoke -node * -type all -message
MAINT=_number_of_hours_down_h
The following AutoSupport message suppresses automatic case creation for two hours:
cluster1:*> system node autosupport invoke -node * -type all -message
MAINT=2h
3.
Disable automatic giveback from the console of the healthy controller:
storage failover modify
–node local -auto-giveback false
4. Take the impaired controller to the LOADER prompt:
If the impaired controller is
displaying…
Then…
The LOADER prompt Go to the next step.
Waiting for giveback…
Press Ctrl-C, and then respond y.
System prompt or password
prompt (enter system password)
Take over or halt the impaired controller: storage failover
takeover -ofnode impaired_node_name
When the
impaired controller shows Waiting for giveback…, press Ctrl-C,
and then respond y.
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