Integrated Dell Remote Access Controller 9 Attribute Registry

BIOS.MemSettings.RedundantMem (Read or Write)

Description

Enables or disables the redundant memory feature. This feature can be enabled only if a valid redundant memory configuration is detected. When Mirror Mode is enabled, the server maintains two identical copies of data in memory. This feature allows the system to continue running even during a catastrophic memory failure. NOTE: In Mirror Mode, only half of the memory size is reported to the OS. When Spare Mode is enabled, certain sets of DIMMs or a portion of these DIMMs called a Rank will be set aside as the spare memory. When a preset threshold of correctable errors has been reached on an active DIMM rank, the contents of that rank will be copied to the spare memory to prevent catastrophic memory failure. Note that in Spare Mode, the memory size reported to the OS does not include the spare portion. Default: Disabled

For Spare Mode: Has a dependency on DIMM population where within a given channel, multi-rank DIMM or multi single rank DIMM needs to be populated. For Mirror Mode and Lockstep Mode: Has a dependency on DIMM population where corresponding channnels for each socket (Channel0 and Channel2, Channel1 and Channel 3) needs to be populated and populated idenditally. Not on 13G+.

Legal Values

• Disabled
• Spare
• Mirror
• IntraNodeMirror
• DimmSpare
• Dddc

Default Value

Not Applicable

Write Privilege

Server Control

License Required

iDRAC Express or iDRAC Enterprise

Dependency

Not applicable