Chapter 4: UEFI BIOS
79
tRWSR (Read to Write turnaround time for Same Rank) Relaxation
Select Enable to use the same tRWSR DDR timing setting among all memory channels,
and in which case, the worst case value among all channels will be used. Select Disable
to use different values for the tRWSR DDR timing settings for different channels as trained.
The options are Auto,
Disable
, and Enable.
Enable ADR
Select Enable for ADR (Async DIMM Self-Refresh) support to enhance memory performance.
The options are Disable and
Enable
.
Data Scrambling for NVDIMM
Select Enable to enable data scrambling support for onboard NVDIMM memory to improve
system performance and security. The options are
Auto
, Disable, and Enable.
Erase-Arm NVDIMMs
If this feature is set to Enable, the function that arms the NVDIMMs for safe operations in
the event of a power loss will be removed. The options are
Enable
and Disable.
Restore NVDIMMs
Select Enable to restore the functionality and the features of NVDIMMs. The options are
Enable
and Disable.
Interleave NVDIMMs
If this item is set to Enable, all onboard NVDIMM modules will be con
fi
gured together as
a group for the interleave mode. If this item is set to Disable, individual NVDIMM modules
will be con
fi
gured separately for the interleave mode. The options are Enable and
Disable
.
Reset Trigger ADR (Async DIMM Self-Refresh)
Upon system power loss, an ADR sequence will be triggered to allow ADR to
fl
ush the
write-protected data buffers in the memory controller and place the DRAM memory in self-
refresh mode. When this process is complete, the NVDIMM will then take control of the
DRAM memory and transfer the contents to the onboard Flash memory. After the transfer is
complete, the NVDIMM goes into a zero power state. The data transferred will be retained
for the duration speci
fi
ed by the
fl
ash memory. The options are Enable and
Disable
.
S5 Trigger ADR
Select Enabled to support S5-Triggered ADR to enhance system performance and data
integrity. The options are
Disabled
and Enabled.
2X Refresh
Select Enable for memory 2X refresh support to enhance memory performance. The options
are Disable, Enable and
Auto
.
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