Step 2: Remove Controller Canister - Lenovo ThinkSystem DE6400 Manual

If a problem occurs when you remove a controller, you can use the saved file to restore your
configuration. The system will save the current state of the RAID configuration database, which
includes all data for volume groups and disk pools on the controller.
◦ From System Manager:
a. Select Support › Support Center › Diagnostics.
b. Select Collect Configuration Data.
c. Click Collect.
The file is saved in the Downloads folder for your browser with the name,
configurationData-<arrayName>-<dateTime>.7z.
4. If the controller is not already offline, take it offline now using ThinkSystem System Manager.
a. Select Hardware.
b. If the graphic shows the drives, select Show back of shelf to show the controllers.
c. Select the controller that you want to place offline.
d. From the context menu, select Place offline, and confirm that you want to perform the
operation.
If you are accessing ThinkSystem System Manager using the controller you
are attempting to take offline, a ThinkSystem System Manager Unavailable

message is displayed. Select Connect to an alternate network connection
to automatically access ThinkSystem System Manager using the other
controller.
5. Wait for ThinkSystem System Manager to update the controller's status to offline.

Do not begin any other operations until after the status has been updated.
6. Select Recheck from the Recovery Guru, and confirm that the OK to remove field in the
Details area displays Yes, indicating that it is safe to remove this component.

6.2.2. Step 2: Remove controller canister

Remove the controller canister so you can replace the failed fan with a new one.
Steps
1. Put on an ESD wristband or take other antistatic precautions.
2. Label each cable that is attached to the controller canister.
3. Disconnect all the cables from the controller canister.
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