Dell POWEREDGE R510 Technical Manualbook

Also see for PowerEdge R510: Manual Update Installation Rack installation Technical guide

Contents

Dell POWEREDGE R510 Technical Manualbook Manual pdf 42 page image

DellPowerEdge R510 Technical Guide 42Power Inventory (PSU, CPU, and DIMM mismatchchecking)Support for Multiple power profilesStatic Maximum Performance ModeOS Control(DBS)Active Power ControllerCustom9.2 ACPIBIOS is compliant with ACPI version 2.0a. ACPI features consist of two types: configuration features andpower management features. The features supported on this system are described below.9.2.1 Configuration• PCI Routing Table (_PRT). Each host bus has a PCI routing table in the DSDT that describes how PCIinterrupt lines are connected to the chipset. If the OS chooses to use the IOAPICs, an APIC-mode tabletells which PIRQ is connected to which IOAPIC pin. If the OS chooses to use only the legacy PICs, aPIC-mode table provides control methods the OS can use to program the South Bridge’s interruptrouter.• Reporting Usage of Resources (_CRS, _STA). DSDT objects report resources that are producedand/or consumed by each bus and each onboard device. The following resources are reported:memory, I/O, DMA, IRQ, and bus number resources. Bus number resources, PCI memory regions, andPCI I/O regions are updated dynamically in the DSDT after all buses have been enumerated by theBIOS.• Dynamic Resource Allocation (_PRS, _SRS, _DIS). DSDT _PRS objects tell the OS what resourcescan be assigned to a given device. _SRS and _DIS methods in the DSDT allow the OS to change adevice’s resource settings or disable the device.9.2.2 Power ManagementPower management features come in two flavors: fixed or generic. Fixed features use bits defined in the ACPIspecification for specific capabilities. The fixed feature bits give the OS complete control over the powermanagement of a device since the location of the bits is given to the OS in the FACP table. Thus, a driver candirectly access bits to control a device’s power management. Generic features have defined enable and statusbits, but the functionality is not fully visible to the OS. Dell provides ASL code to handle the details of genericfeatures, allowing the OS to intelligently communicate with system-specific hardware.Table 14. Summary of Power Management FeaturesFeature Type Enable/Status/ Ctrlbit locationDescriptionACPI ModeSwitchFixed ICH-10 The OS uses the SCI_EN bit in ICH to switch from legacy modeto ACPI mode.Sleep States Fixed ICH-10 Supported states: S0 (Working), S4-OS (Hibernation in WindowsOS), and S5 (Soft-off).S1 (also called standby or suspend) and S3 are not supported.