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PowerEdge R210 Technical Guide 40
• AC recovery staggering Power-Up
• DIMM mismatch checking
• Support for multiple power profiles:
• Static Maximum Performance Mode
• OS Control (DBS)
• Active Power Controller
• Custom
9.2 ACPI
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
9.3.1 Dell 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.