Datasheet

BIOS Setup Utility Intel® Server Board S5520HC / S5500HCV TPS
Revision 1.2
Intel order number E39529-009
76
Setup Item Options Help Text Comments
Intel® Virtualization
Technology
Enabled
Disabled
Intel® Virtualization Technology allows a
platform to run multiple operating systems
and applications in independent partitions.
Note: A change to this option requires the
system to be powered off and then back on
before the setting takes effect.
Intel® Virtualization
Technology for Directed
I/O
Enabled
Disabled
Enable/Disable Intel® Virtualization
Technology for Directed I/O.
Report the I/O device assignment to VMM
through DMAR ACPI Tables
Interrupt Remapping
Enabled
Disabled
Enable/Disable Intel® VT-d Interrupt
Remapping support.
Only appears when Intel®
Virtualization Technology for
Directed I/O is enabled.
Coherency Support
Enabled
Disabled
Enable/Disable Intel® VT-d Coherency
support.
Only appears when Intel®
Virtualization Technology for
Directed I/O is enabled.
ATS Support
Enabled
Disabled
Enable/Disable Intel® VT-d Address
Translation Services (ATS) support.
Only appears when Intel®
Virtualization Technology for
Directed I/O is enabled.
Pass-through DMA
Support
Enabled
Disabled
Enable/Disable Intel® VT-d Pass-through
DMA support.
Only appears when Intel®
Virtualization Technology for
Directed I/O is enabled.
Hardware Prefetcher
Enabled
Disabled
Hardware Prefetcher is a speculative
prefetch unit within the processor(s).
Note: Modifying this setting may affect
system performance.
Adjacent Cache Line
Prefetch
Enabled
Disabled
[Enabled] - Cache lines are fetched in pairs
(even line + odd line).
[Disabled] - Only the current cache line
required is fetched.
Note: Modifying this setting may affect
system performance.
Direct Cache Access
(DCA)
Enabled
Disabled
Allows processors to increase the I/O
performance by placing data from I/O
devices directly into the processor cache.