IBM System x3750 M4 Type 8722 Installation And Service Manual page 145

redirection; enable or disable the integrated Ethernet controller, SAS/SATA
controller, SATA optical drive channels, and PCI slots. If you disable a device,
it cannot be configured, and the operating system will not be able to detect it
(this is equivalent to disconnecting the device).
– Power
Select this choice to view or change power capping to control consumption,
processors, and performance states.
- Active Energy Manager
Select this choice to enable or disable power capping. If you enable power
capping, the Active Energy Manager program will limit the maximum
power that is consumed by the server.
– Operating Modes
Select this choice to view or change the operating profile (performance and
power utilization). This choice specifies a preset operating mode to configure
the server for maximum power savings, maximum efficiency, and maximum
performance.
- Minimal Power mode
Select this choice to minimize the absolute power consumption of the
system during operation. Server performance in this mode might be
reduced depending on the application that is running.
- Efficiency-Favor Power mode
Select this choice to configure the server to draw the minimum amount of
power and generate the least noise. Server performance might be degraded,
depending on the application that you are running. This mode provides the
best features for reducing power and increasing performance in
applications where the maximum bus speeds are not critical.
- Efficiency-Favor Performance mode
Select this choice to maintain the optimal balance between performance and
power consumption. The server generally produces the best performance
per watt while it is in this mode. No bus speeds are derated in this mode.
This is the default mode.
- Maximum Performance mode
Select this choice to achieve the maximum performance for most server
applications. The power consumption in this mode is often higher than in
the Efficiency-Favor Power or Efficiency-Favor Performance mode.
- Custom mode
Select this choice only if you understand the functions of the low-level
IMM settings. This is the only choice that enables you to change the
low-level IMM settings that affect the performance and power consumption
of the server.
– Legacy Support
Select this choice to view or set legacy support.
- Force Legacy Video on Boot
Select this choice to force legacy video support, if the operating system
does not support UEFI video output standards.
- Rehook INT 19H
Select this choice to enable or disable devices from taking control of the
boot process. The default is Disable.
- Legacy Thunk Support
Chapter 3. Configuration information and instructions
129