Chapter 6: UEFI BIOS
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ADDDC Sparing
Adaptive Double Device Data Correction (ADDDC) Sparing detects the predetermined
threshold for correctable errors, copying the contents of the failing DIMM to spare
memory. The failing DIMM or memory rank will then be disabled.
The options are
Dis-
able
and Enable.
Patrol Scrub
Patrol Scrubbing is a process that allows the CPU to correct correctable memory errors
detected on a memory module and send the correction to the requestor (the original
source). When this feature is set to Enable, read-and-write will be performed every
16K cycles per cache line if there is no delay caused by internal processing. The op-
tions are Disable and
Enable
.
Patrol Scrub Interval
This feature allows you to decide how many hours the system should wait before the
next complete patrol scrub is performed. Use the keyboard to enter a value from 0-24.
The Default setting is
24
.
IIO Configuration
IIO Configuration
EV DFX Features
When this feature is set to Enable, the EV_DFX Lock Bits that are located on a proces-
sor will always remain clear during electric tuning. The options are
Disable
and Enable.
CPU1 Configuration
IOU0 (IIO PCIe Br1)
This feature configures the PCI-E port Bifurcation setting for a PCI-E port specified by
the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
IOU1 (IIO PCIe Br2)
This feature configures the PCI-E port Bifurcation setting for a PCI-E port specified by
the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
IOU2 (IIO PCIe Br3)
This feature configures the PCI-E port Bifurcation setting for a PCI-E port specified by
the user. The options are x4x4x4x4, x4x4x8, x8x4x4, x8x8, x16, and
Auto
.
