Fujitsu Primergy RX300 S4 User Manual page 148

Chapter 6 Installing Internal Options
3
Select [Advanced System Configuration] in the [Advanced] menu, and press
the [Enter] key.
"7.2.5 Advanced Menu" (p.190)
4
Select the [Memory Redundancy] item, and press the [Enter] key.
5
Select [Mirroring], and press the [Enter] key.
6
Select [Save Changes & Exit] in the [Exit] menu and press the [F10] key.
A message confirming whether to save the BIOS setting change is displayed.
7
Select [Yes] and press the [Enter] key.
After the system restarts, the memory mirror configuration becomes effective.
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