(1) Attention LED
The figure shows an example controller canister; the host ports on your controller
canister might be different.
3.1.2. Requirements for replacing a failed controller
Before you replace a controller, you must have:
•
A replacement controller canister with the same part number as the controller canister you are
replacing.
•
An ESD wristband, or you have taken other antistatic precautions.
•
Labels to identify each cable that is connected to the controller canister.
•
A #1 Phillips screwdriver.
•
A management station with a browser that can access ThinkSystem System Manager for the
controller. (To open the System Manager interface, point the browser to the controller’s domain
name or IP address.)
3.1.3. Duplex configuration requirements
For a controller shelf with two controllers (duplex configuration), 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.
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