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Chapter 3. Controllers
3.1. Requirements for DE6400 or DE6600 controller
replacement
Before you replace a DE6400 or DE6600 controller, review the requirements and
considerations.
A controller consists of a board, firmware, and software. It controls the drives and implements the
ThinkSystem System Manager functions.
3.1.1. Controller replacement requirements
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.)
3.1.2. Replacement while powered on
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 ThinkSystem System
Manager displays Yes, indicating that it is safe to remove this component.
3.2. Replace DE6400 or DE6600 controller
You can replace a single controller in your DE6400 or DE6600 controller shelf.
About this task
When you replace a failed controller canister, you must remove the battery, power supply, DIMMs,
fans, and host interface card (HIC) from the original controller canister, and then install them in the
replacement controller canister.
Before you begin
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