You can install the system image to the replacement boot media using a USB flash drive with the image installed on it. However, you must restore the var file system during this procedure.
Before you begin
You must have a USB flash drive, formatted to FAT32, with the following items:
- If your system is an HA pair, you must have a network connection.
About this task
A video for this task is available at:
- Align the end of the controller module with the opening in the chassis, and then gently push the controller module halfway into the system.
- Reinstall the cable management device and recable the system, as needed.
When recabling, remember to reinstall the media converters (SFPs) if they were removed.
- Insert the USB flash drive into the USB slot on the controller module.
Make sure that you install the USB flash drive in the slot labeled for USB devices, and not in the USB console port.
- Push the controller module all the way into the system, making sure that the cam handle clears the USB flash drive, firmly push the cam handle to finish seating the controller module, push the cam handle to the closed position, and then tighten the thumbscrew.
The controller begins to boot as soon as it is completely installed into the chassis.
- Interrupt the boot process to stop at the LOADER prompt by pressing Ctrl-C when you see Starting AUTOBOOT press Ctrl-C to abort....
If you miss this message, press Ctrl-C to boot to Maintenance mode, and then select the option to boot to LOADER.
- For systems with one controller in the chassis, reconnect the power and turn on the power supplies.
The system begins to boot and stops at the LOADER prompt.
- Boot the recovery image: boot_recovery ontap_image_name.tgz
If the image.tgz file is named something other than image.tgz, such as boot_recovery 9_4.tgz, you need to include the different file name in the boot_recovery command.
The system boots to the boot menu and prompts you for the boot image name.
- Enter the boot image name that is on the USB flash drive: image_name.tgz
After image_name.tgz is installed, the system prompts you to restore the backup configuration (the var file system) from the healthy controller.
- Restore the var file system:
| If your system has... | Then... |
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| A network connection | - Press y when prompted to restore the backup configuration.
- Set the healthy controller to advanced privilege level: set -privilege advanced
- Run the restore backup command: system node restore-backup -node local -target-address impaired_node_IP_address
- Return the controller to admin level: set -privilege admin
- Press y when prompted to use the restored configuration.
- Press y when prompted to reboot the controller.
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| No network connection | - Press n when prompted to restore the backup configuration.
- Reboot the system when prompted by the system.
- Select the Update flash from backup config (sync flash) option from the displayed menu.
If you are prompted to continue with the update, press y.
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- Although ONTAP 9 retains the environment variable settings, it is a best practice to verify that they are set as expected.
- Take the controller to the LOADER prompt.
- Check the environment variable settings with the printenv command.
- If an environment variable is not set as expected, modify it with the setenv environment_variable_name changed_value command.
- Save your changes using the saveenv command.
- Reboot the controller.
- The next step depends on your system configuration:
| If your system is in... | Then... |
|---|
| An HA pair | After the degraded controller is displaying the Waiting for Giveback... message, perform a giveback from the healthy controller:Perform a giveback from the healthy controller: storage failover giveback -ofnode partner_node_name This initiates the process of returning ownership of the degraded controller's aggregates and volumes from the healthy controller back to the degraded controller. - Monitor the progress of the giveback operation by using the storage failover show-giveback command.
- After the giveback operation is complete, confirm that the HA pair is healthy and that takeover is possible by using the storage failover show command.
- Restore automatic giveback if you disabled it by using the storage failover modify command.
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