Contents 5When a RAID Controller Module Is Replacedor Removed . . . . . . . . . . . . . . . . . . . . . 50RAID Controller Failover Modes . . . . . . . . . . 51Thermal Shutdown . . . . . . . . . . . . . . . . . . . 52Updating Enclosure Firmware . . . . . . . . . . . . . 52RAID Controller Module Firmware . . . . . . . . . 52Physical Disk Firmware . . . . . . . . . . . . . . 53Expansion Enclosure Firmware . . . . . . . . . . 53Best Practices and Recommendations . . . . . . . . . 543 Installing Enclosure Components . . . . . . 55Recommended Tools . . . . . . . . . . . . . . . . . . 55Removing and Replacing the Front Bezel . . . . . . . . 55Removing and Installing Physical Disks . . . . . . . . 56Removing Physical Disks from the Enclosure . . . 57Installing SAS Physical Disks in theEnclosure . . . . . . . . . . . . . . . . . . . . . . 58Removing and Installing a RAID ControllerModule . . . . . . . . . . . . . . . . . . . . . . . . . . 60Removing a RAID Controller Module . . . . . . . 60Installing a RAID Controller Module . . . . . . . . 61Removing and Installing a RAID ControllerModule Backup Battery Unit . . . . . . . . . . . . . . 62Removing and Installing the Power Supply/CoolingFan Module . . . . . . . . . . . . . . . . . . . . . . . 64Removing a Power Supply/CoolingFan Module . . . . . . . . . . . . . . . . . . . . . 64Installing a Power Supply/CoolingFan Module . . . . . . . . . . . . . . . . . . . . . 65