Dell R210 manual Acpi, Power Management Modes, Dell Active Power Controller

Dell

•AC recovery staggering Power-Up

•DIMM mismatch checking

•Support for multiple power profiles:

•Static Maximum Performance Mode

•OS Control (DBS)

•Active Power Controller

•Custom

9.2ACPI

ACPI compliance: S0, S4, S5 supported

NO S1, S2, S3 (STR) support.

S4 will be supported by OS support only.

Table 14. Wake Up Events and States

Wake Up Events	States Can Wake From
RTC	S5, OS-S4
Power Button	S5, OS-S4
RI#	Not supported
PME#	S5, OS-S4
KB	Not supported
MOUSE	Not supported
USB	Not supported
WOL	S5, OS-S4

9.3 Power Management Modes

9.3.1Dell Active Power Controller

The Dell Active Power Controller (DAPC) is a Dell proprietary implementation that provides improved performance/watt over the OS implementation of Intel’s DBS. DAPC is implemented in system BIOS and uses hardware level counters, etc. to determine hardware utilization. The BIOS uses this information to determine when to change the processor’s operating frequency. The DAPC is OS independent and means that the OS no longer has control. This provides a consistent power management solution regardless of the installed OS. Some OS(s), particularly hypervisors, do not support power management, thus DAPC provides a solution when there otherwise would not be one.

PowerEdge R210 Technical Guide 40