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RAID Array 3000 Controller Shelf
3.5Controller LEDs
The LEDs on the front panel of the controller monitor host and disk channel ac- tivity and a controller fault condition. The reset button/LED flashes green ap- proximately once every second (heartbeat) to indicate that the controller is oper- ating normally. Figure
3.6Replacing Components (FRU’s)
This section describes how to replace an FRU in the RAID Array 3000 controller shelf. The information is divided into the following subsections:
∙Replacing a Host I/O or Device I/O SBB in the controller shelf
∙Replacing a shelf power supply SBB
∙Replacing the RAID controller
∙Replacing the UPS
∙Replacing a blower
∙Replacing a controller memory cache module
NOTE
The