Command Line Interface Guide

name=value pair 1 name=value pair 2 Description
led=identify flash=off | on time-out=< n > Sets the chassis identification LED to off or on. Set the
time-out value for the LED to flash to a number of
seconds.
Omconfig Chassis Memorymode Or Omconfig Mainsystem Memorymode
Use the omconfig chassis memorymode or omconfig mainsystem memorymode command to specify the redundancy
mode to use for the system memory in case of memory errors.
Redundant memory enables a system to switch to other available memory modules if unacceptable errors are detected
in the modules that the system is currently using. The omconfig chassis memorymode or omconfig mainsystem
memorymode command allows you to disable redundancy; when you disable redundancy, you instruct the system not to
switch to other available memory modules when the memory module the system is using begins to encounter errors. To
enable redundancy, choose among spare, mirror, raid, and DDDC.
Spare mode disables a bank of system memory in which a correctable memory event is detected, enables the spare
bank, and copies all the data from the original bank to the spare bank. Spare bank requires at least three banks of
identical memory; the operating system does not recognize the spare bank.
Mirror mode switches to a redundant copy of memory when an uncorrectable memory event is detected. After
switching to the mirrored memory, the system does not switch back to the original system memory until the next reboot.
The operating system does not recognize half of the installed system memory in this mode.
RAID mode provides an extra level of memory checking and error recovery at the expense of some memory capacity.
The DDDC mode enables double device data correction. This ensures data availability after hard failure of x4 DRAM.
NOTE: This command is applicable only on systems prior to PowerEdge 12G systems. On PowerEdge 12G systems,
memorymode is grouped under Memory Settings of the BIOS setup group. For more information, see BIOS Setup
Groups on PowerEdge 12G Systems.
To configure the attribute on systems prior to PowerEdge 12G, see the following table. The table displays the valid
parameters for the command.
Table 27. Valid Parameters Of Omconfig Chassis Memorymode Or Omconfig Mainsystem Memorymode
name=value pair 1 Description
index=< n > Number of the chassis where the memory module resides
(the default is chassis 0, the main system chassis).
redundancy=spare | mirror | disabled | raid5 | dddc
spare: Disables the memory module that has a correctable
memory event and copies the failing module’s data to a
spare bank.
mirror: Switches the systems to a mirrored copy of the
memory if the failing module has an uncorrectable
memory event. In the mirror mode, the operating system
does not switch back to the original module until the
system reboot.
disabled: Indicates that the system is not to use other
available memory modules if uncorrectable memory
events are detected.
raid5: Method of system memory configuration. This is
logically similar to the RAID-5 mode used in hard drive
storage systems. This memory mode provides an extra
level of memory checking and error recovery at the
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