Requirements for replacing a controller

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

Requirements for replacing a failed controller

You can replace a controller canister while your storage array is powered on and performing host I/O operations, if 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 SANtricity System Manager displays Yes, indicating that it is safe to remove this component.
This section describes how to replace a controller canister in the following controller shelves: