CLI Guide

Table 51. Valid Parameters Of Omconfig Chassis Leds Or Omconfig Mainsystem Leds (continued)
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 YX2X systems. On PowerEdge YX2X systems,
memorymode is grouped under Memory Settings of the BIOS setup group. For more information, see BIOS Setup Groups
on PowerEdge YX2X Systems.
To configure the attribute on systems prior to PowerEdge YX2X, see the following table. The table displays the valid parameters
for the command.
Table 52. 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 expense of some
memory capacity. The RAID mode supported is RAID level 5
striping with rotational parity.
dddc: The dddc mode enables double device data correction.
This ensures data availability after hard failure of x4 DRAM.
78 Omconfig Managing Components Using The Instrumentation Service