Reference 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
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