NEC express5800 A2010b - Page 479

2. Operation Mode
Chapter 4 Appendix
Operation mode
Parameter
([ ]: Default setting)
When
applied
Description
NUMA Disabled
[Enabled]
At next boot Enable or disable NUMA (Non Uniform
MemoryAccess) feature. When enabled, OS
detects CPU core and memory configuration, and
allocate resources appropriately to ensure
performance.
Enabled: Enables the feature.
Disabled: Disables the feature.
Memory RAS Mode Independent
Independent+Rank Sparing
Independent+Mirroring
[Lock Step]
Lock Step+Rank Sparing
Lock Step+Mirroring
At next boot Specify the memory RAS mode.
See Chapter 2 (1.14.6 Using Memory RAS
Feature).
Memory Interleave Disabled
[Intra]
At next boot Enable or disable the memory interleave feature.
Disabled: Disables the feature.
Intra: Use the memory in socket in interleave
mode.
Patrol Scrub Disabled
[Enabled]
At next boot Enable or disable the patrol scrubbing feature.
Disabled: Disables the feature.
Enable: Accesses the memory periodically. If a
correctable error is detected, correct an error,
and write back the corrected data to memory to
recover the data.
Demand Scrub Disabled
[Enabled]
At next boot Enable or disable the demand scrubbing feature.
Disabled: Disables the feature.
Enabled: If a correctable error is detected by
memory access request in normal processing,
correct an error, and write back the corrected
data to memory to recover the data.
Double Refresh [Disabled]
Enabled
At next boot Enable or disable the feature to double the
DRAM refresh rate.
Disabled: Disables the feature.
Enabled: Doubles the DRAM refresh rate at
disabled state. This can reduce occurrence of
DRAM failure, however, memory access
performance may be lowered.
I/O related (Option ROM)
Advanced menu
→
PCI Configuration
→
PCI Device Controller and Option ROM Settings
Operation mode
Parameter
([ ]: Default setting)
When
applied
Description
EFI OPROMs [Disabled]
Enabled
At next boot When an option ROM compliant to UEFI
standard is installed on PCI device, enable or
disable the feature to excute that option ROM.
Enabled: Execute option ROM compliant to
UEFI standard.
Disabled: Does not execute option ROM
compliant to UEFI standard. (Executes legacy
option ROM only.)
PCI1-16 Slot Option
ROM
Disabled
[Enabled]
(for PCI slot #1 or #2)
[Disabled]
Enabled
(for PCI slot other than #1
and #2)
At next boot Enable or disable execution of option ROM
installed on PCI card.
Enabled: Execute option ROM installed on
relevant slot.
Disabled: Does not execute option ROM
installed on relevant slot.
Express5800/A1040b, A2040b, A2020b, A2010b User's Guide
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