Dell PowerEdge C6145 - Manual (Page 59)

Using the System Setup Program | 59
Memory Configuration
Scroll to this item and press Enter to view the following screen:
Option Description
CS Sparing Enable
(Disabled default) Reserves a spare memory rank in each channel. This
item will become grey if the memory population
cannot support memory sparing.
DIMM Voltage
(Auto default) Controls the DIMM voltage.
Memory Timing Parameter
(CPU Node 0 default)
Selects the timing parameters of which node to be
displayed.
NOTE: The item will become gray if the Memory population cannot support
memory sparing.