Dell C6220 II Option , Description , Mirror Mode: Enables memory mirroring. Advanced ECC Mode: Controllers are joined

Using the System Setup Program | 95
Option
Description
copied to the spare rank and the failed rank
is disabled. With memory sparing enabled,
the system memory available to the
operating system is reduced by one rank per
channel.
For example, in a dual-processor
configuration with sixteen 32 GB quad-rank
DIMMs, the available system memory is: 32
GB x 16(DIMMs) – 32/4 (rank size) x 8
(channels) = 448 GB.
With sixteen 64 GB 8-rank LRDIMMs
which use Rank Multiplication(RM)=4, the
available system memory is: 64 GB x
16(DIMMs) – 64/8x4 (rank size) x 8
(channels) = 768 GB.
 Mirror Mode: Enables memory mirroring.
 Advanced ECC Mode: Controllers are joined
in 128-bit mode running multi-bit advanced
ECC.
Demand Scrubbing
(Enabled default)
Disables or enables dram scrubbing is the ability to
write corrected data back to the memory once a
correctable error is detected on read transaction.
Patrol Scrubbing
(Enabled default)
To disable or enable patrol scrubbing proactively
searches the system memory, repairing correctable
error.
Memory Operating Voltage
(Auto default)
Auto – this setting indicates the memory operating
voltage will be set automatically by the memory
initialization code and depends upon the installed
DIMM’s capability and the memory configuration of
the system. This is the default setting and will set the
Memory Operating Voltage to the POR voltage.
1.5 V indicates all DIMMs in the system are operating
at 1.5 volts.
1.35 V indicates all DIMMs in the system are operating
at 1.35 volts.
1.25 V indicates all DIMMs in the system are operating
at 1.25 volts.