Replace the caching module - FAS8300 and FAS8700
You must replace the caching module in the controller module when your system
registers a single AutoSupport (ASUP) message that the module has gone offline; failure
to do so results in performance degradation.
• You must replace the failed component with a replacement FRU component you received from your
provider.
Step 1: Shut down the impaired controller
You can shut down or take over the impaired controller using different procedures,
depending on the storage system hardware configuration.
Option 1: Most configurations
To shut down the impaired node, you must determine the status of the node and, if
necessary, take over the node so that the healthy node continues to serve data from the
impaired node 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
node shows false for eligibility and health, you must correct the issue before shutting down the impaired node.
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 node:
storage failover modify –node
local -auto-giveback false
4. Take the impaired node to the LOADER prompt:
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