Service Guide

BIOS Setup Utilities
138 Intel
®
Server System P4000IP and Intel
®
Workstation System P4000CR Service Guide
Option Values: Disabled
Compatibility
Enhanced
AHCI
RAID Mode
Help Text:
- Compatibility provides PATA emulation on the SATA device
- Enhanced provides Native SATA support
- AHCI enables the Advanced Host Controller Interface, which provides Enhanced
SATA functionality
- RAID Mode provides host based RAID support on the onboard SATA ports
Comments: This option configures the onboard AHCI-capable SATA controller, which is
distinct from the SCU. The number and type of ports it controls differs between board series
If the SATA Controller is Disabled, the SATA Ports will not operate and any installed SATA
devices will be unavailable.
Compatibility provides PATA emulation on the SATA device, allowing the use of legacy
IDE/PATA drivers. Enhanced provides Native SATA support, using native SATA drivers
included with the vast majority of current OSes. AHCI enables the Advanced Host Controller
Interface, which provides Enhanced SATA functionality. Plus possible additional functionality
(Native Command Queuing, Hot Plug, Staggered Spin Up). It uses AHCI drivers available for
the majority of current OSes.
RAID Mode provides host based RAID support on the onboard SATA ports. RAID levels
supported and required drivers depend on the RAID stack selected
4. AHCI eSATA Options
Option Values:
SATA
eSATA
Help Text:
- SATA mode enables the switchable internal AHCI SATA (port 1)
- eSATA mode enables the switchable external AHCI eSATA (port 1)
- These modes are mutually exclusive, so SATA port 1 will only be active on one
connector, not both.
Comments: In order to use the external eSATA connection, this option must be set to eSATA.
When the external eSATA connector is selected, it disables the corresponding internal SATA
port 1 connector. When set to SATA, the internal connector for SATA port 1 is active, and
the external eSATA connector is disabled.
This option setting only appears when the SATA Controller is enabled, and only for platforms
which support eSATA.