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Figure 8-4: Controller LEDs on a CBXSS/CBXSL/CBSS/CBSL
Replacing the controller in a CBL Controller Box
To replace a controller in CBL Controller Boxes, perform the following steps:
1. Remove the faulty controller from the storage system.
2. Remove all fan modules from the faulty controller.
3. Remove the cache memory from the faulty controller.
4. Install the cache memory on the replacement controller.
5. Install the new controller into the storage system.
Removing the faulty controller
To remove the faulty controller:
1. Slide the right and left blue latches, and then open the levers forward.
2. Open the right and left levers forward. When the levers are completely
open, the controller can be removed by sliding it forward.
CAUTION! To avoid getting burned, do not touch heat sinks or integrated
circuits. Handle component with care.
3. Slide the controller forward and remove it.
4. Remove all the components from the controller to be replaced and install
them on the new Controller.
Removing the fan modules from the faulty controller
To remove all fan modules from the controller:
1. Loosen the blue screw that secures the fan module, slide the latch up,
and then pull out and remove the fan module.
2. Take the fan modules you removed and insert them in the new controller.
Install the fan modules in the same location where they were installed
in the faulty controller.
8–10
Adding and replacing controllers
Hitachi Unified Storage Hardware Service Guide
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