message Press Ctrl-C for Boot Menu.
If you miss the prompt and the controller modules boot to ONTAP, enter halt, and then
at the LOADER prompt enter
boot_ontap, press Ctrl-C when prompted, and then
repeat this step.
b. From the boot menu, select the option for Maintenance mode.
Controller
Replace the controller module - AFF C190
You must review the prerequisites for the replacement procedure and select the correct
one for your version of the ONTAP operating system.
• All drive shelves must be working properly.
• If your system is in an HA pair, the healthy node must be able to take over the node that is being replaced
(referred to in this procedure as the “impaired node”).
• This procedure includes steps for automatically or manually reassigning drives to the replacement node,
depending on your system’s configuration.
• You should perform the drive reassignment as directed in the procedure.
• You must replace the failed component with a replacement FRU component you received from your
provider.
• You must be replacing a controller module with a controller module of the same model type. You cannot
upgrade your system by just replacing the controller module.
• You cannot change any drives or drive shelves as part of this procedure.
• In this procedure, the boot device is moved from the impaired node to the replacement node so that the
replacement node will boot up in the same version of ONTAP as the old controller module.
• It is important that you apply the commands in these steps on the correct systems:
◦ The impaired node is the node that is being replaced.
◦ The replacement node is the new node that is replacing the impaired node.
◦ The healthy node is the surviving node.
• You must always capture the node’s console output to a text file.
This provides you a record of the procedure so that you can troubleshoot any issues that you might
encounter during the replacement process.
Shut down the node - AFF C190
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 task
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;
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