Fujitsu PRIMERGY CX120 S1 Service Supplement Manual page 39

Ê Remove four screws per HDD from the hard disk drive cage:
Lower drive bay: Primary HDD
Upper drive bay: Secondary HDD
Ê Remove the defective hard disk drive(s) from the cage.
Figure 24: Inserting the primary hard disk drive into the HDD cage
Ê Insert the primary replacement hard disk drive into the lower drive bay of the
HDD cage.
PRIMERGY CX120 S1
Replacing the hard disk drives
Service Supplement 37