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Requirements for replacing controller

If you plan to replace a controller, keep the following requirements in mind.

  • You must have a replacement controller canister with the same part number as the controller canister you are replacing.
  • You have an ESD wristband, or you have taken other antistatic precautions.
  • You must use labels to identify each cable that is connected to the controller canister.
  • You must have a #1 Phillips screwdriver.

  • You have installed ThinkSystem Storage Manager on a management station, so you can use the storage array's command line interface (CLI). If this software has not yet been installed, follow the instructions in the Windows express configuration, VMware express configuration, or Linux express configuration to download and install it.

Two-controller configuration

If the controller shelf has two controllers, you can replace a controller canister while your storage array is powered on and performing host I/O operations, as long as the following conditions are true:
  • The second controller canister in the shelf has Optimal status.
  • The OK to remove field in the Details area of the Recovery Guru in ThinkSystem System Manager displays Yes, indicating that it is safe to remove this component.