Supermicro SuperStorageSystem SSG-2028R-DN2R24L User Manual page 61

SUPERSTORAGESYSTEM SSG-2028R-DN2R24L User's Manual
DIMM Information
This item displays the status of a DIMM module as detected by the AMI
BIOS.
•
P1 DIMMA1 ~ P2 DIMMH3
 Memory RAS (Reliability_Availability_Serviceability)
Configuration
Use this submenu to configure the following Memory RAS settings.
RAS Mode
When Independent is selected, all memory modules operate independently.
When Mirror is selected, the motherboard maintains two identical copies of all
data in memory for data backup. When Lockstep is selected, the motherboard
uses two areas of memory to run the same set of operations in parallel to boost
performance. The options are Independent, Mirror, and Lockstep Mode.
Memory Rank Sparing
Select Enable to enable memory-sparing support for memory ranks to improve
memory performance. The options are Disabled and Enabled.
Patrol Scrub
Patrol Scrubbing is a process that allows the CPU to correct correctable memory
errors detected on a memory module and send the corrections to the requestor
(the original source). When this item is set to Enable, the IO hub will read and
write back one cache line every 16K cycles if there is no delay caused by internal
processing. By using this method, roughly 64 GB of memory behind the IO hub
will be scrubbed every day. The options are Enable and Disable.
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.
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Demand Scrub
Demand Scrubbing is a process that allows the CPU to correct correctable
memory errors found on a memory module. When the CPU or I/O issues a
demand-read command, and the read data from memory turns out to be a
correctable error, the error is corrected and sent to the requestor (the original
source). Memory is updated as well. Select Enable to use Demand Scrubbing
for ECC memory correction. The options are Enable and Disable.
Device Tagging
Select Enable to support device tagging. The options are Disable and Enable.
South Bridge Configuration
The following South Bridge information will display:
USB Configuration
•
USB Module Version
•
USB Controllers
•
USB Devices
Legacy USB Support
Select Enabled to support onboard legacy USB devices. Select Auto to disable
legacy support when there are no legacy USB devices present. Select Disabled to
have all USB devices available for EFI applications only. The options are Enabled,
Disabled and Auto.
XHCI Hand-Off
This is a work-around solution for operating systems that do not support XHCI (Ex-
tensible Host Controller Interface) hand-off. The XHCI ownership change should be
claimed by the XHCI driver. The settings are Enabled and Disabled.
EHCI Hand-Off
This item is for operating systems that do not support Enhanced Host Controller
Interface (EHCI) hand-off. When this item is enabled, EHCI ownership change will
be claimed by the EHCI driver. The settings are Enabled and Disabled.
Port 60/64 Emulation
Select Enabled to support I/O port 60h/64h emulation, which will provide complete
legacy USB keyboard support for the operating systems that do not support legacy
USB devices. The options are Disabled and Enabled.
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Chapter 7: AMI BIOS