7.3.3 Replacing the 12x 3.5-inch HDD backplane
7.3.3.1 Preliminary steps
Ê "Locating the defective server" on page 51
Ê "Disabling or suspending BitLocker functionality" on page 69
Ê "Shutting down the server" on page 53
Ê "Disconnecting power cords" on page 54
Ê Remove all HDD / SSD modules from the server as described in section 
"Removing 3.5-inch HDD modules" on page 118.
V CAUTION!
Ensure that all hard disk drives are uniquely identified so that you can 
reinsert them into their original bays after replacing the HDD 
backplane.
Ê "Getting access to the component" on page 55
Ê "Removing the fan box" on page 154
Field Replaceable Unit
(FRU)
Hardware: 15 minutes
Tools: Phillips PH2 / (+) No. 2 screw driver