Dell EMC PowerEdge C6520 BIOS and UEFI Reference Guide Part Number: E64S Series Regulatory Type: E64S001 May 2021 Rev.
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Contents Chapter 1: Pre-operating system management applications...........................................................4 System Setup....................................................................................................................................................................... 4 System BIOS................................................................................................................................................................... 5 iDRAC Settings utility......
1 Pre-operating system management applications You can manage basic settings and features of a system without booting to the operating system by using the system firmware.
System BIOS To view the System BIOS screen, power on the system, press F2, and click System Setup Main Menu > System BIOS. Table 2. System BIOS details Option Description System Information Provides information about the system such as the system model name, BIOS version, and Service Tag. Memory Settings Specifies information and options related to the installed memory. Processor Settings Specifies information and options related to the processor such as speed and cache size.
Table 3. System Information details (continued) Option Description System CPLD Version Specifies the current version of the system complex programmable logic device (CPLD) firmware. UEFI Compliance Version Specifies the UEFI compliance level of the system firmware. Memory Settings To view the Memory Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Memory Settings. Table 4.
Table 4. Memory Settings details (continued) Option Description Dark Memory: Total Memory Available Enables or Disables dark memory feature. Dark Memory feature allows software to change memory size. The option is set to Disabled in default, need to be enabled by personality module. Processor Settings To view the Processor Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Processor Settings. Table 5.
Table 5. Processor Settings details (continued) Option Description DCU IP Prefetcher Enables or disables the Data Cache Unit (DCU) IP prefetcher. This option is set to Enabled by default. Sub NUMA Cluster Enables or disables the Sub NUMA Cluster. This option is set to Disabled by default. MADT Core Enumeration Specifies the MADT Core Enumeration. This option is set to default in Round Robin. UPI Prefetch Enables you to get the memory read started early on DDR bus.
Table 5. Processor Settings details (continued) Option Description x2APIC Mode Enables or disables x2APIC mode. This option is set to Enabled by default. NOTE: For two processors 64 cores configuration, x2APIC mode is not switchable if 256 threads are enabled (BIOS settings: All CCD, cores and logical processors enabled). AVX ICCP Pre-Grant License Enables or disables AVX ICCP Pre-Grant License. This option is set to Disabled by default.
Table 6. Processor n details Option Description Family-Model-Stepping Specifies the family, model, and stepping of the processor as defined by Intel. Brand Specifies the brand name. Level 2 Cache Specifies the total L2 cache. Level 3 Cache Specifies the total L3 cache. Number of Cores Specifies the number of cores per processor. Maximum Memory Capacity Specifies the maximum memory capacity per processor. Microcode Specifies the processor microcode version.
To view the NVMe Settings screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > NVMe Settings. Table 9. NVMe Settings details Option Description NVMe mode Enables or disables the boot mode. The option is set to Non-RAID mode by default. BIOS NVMe driver Sets the drive type to boot the NVMe driver. The available options are Dell Qualified Drives and All Drives. This option is set to Dell Qualified Drives by default.
Table 10. Boot Settings details (continued) Option Description Table 11. UEFI Boot Settings Option Description UEFI Boot Sequence Enables you to change the boot device order. Boot Options Enable/Disable Enables you to select the enabled or disabled boot devices Choosing system boot mode System Setup enables you to specify one of the following boot modes for installing your operating system: ● UEFI boot mode (the default), is an enhanced 64-bit boot interface.
Table 12. Network Settings details Option Description UEFI PXE Settings Enables you to control the configuration of the UEFI PXE device. PXE Device n (n = 1 to 4) Enables or disables the device. When enabled, a UEFI PXE boot option is created for the device. PXE Device n Settings(n = 1 to 4) Enables you to control the configuration of the PXE device. UEFI HTTP Settings Enables you to control the configuration of the UEFI HTTP device. HTTP Device n (n = 1 to 4) Enables or disables the device.
Table 16. Integrated Devices details Option Description User Accessible USB Ports Configures the user accessible USB ports. Selecting All Ports Off disables all front and back USB ports.This option is set to All Ports On by default. The USB keyboard and mouse still function in certain USB ports during the boot process, depending on the selection. After the boot process is complete, the USB ports will be enabled or disabled as per the setting.
Table 16. Integrated Devices details (continued) Option Description system initializes the timer. When this option is set to Disabled (the default), the timer does not have any effect on the system. Empty Slot Unhide Enables or disables the root ports of all the empty slots that are accessible to the BIOS and OS. This option is set to Disabled by default. Memory Mapped I/O above 4 GB Enables or disables the support for the PCIe devices that need large amounts of memory.
Table 17. Serial Communication details (continued) Option Description be changed in iDRAC. Loading the BIOS default settings from within the BIOS setup utility may not always revert the serial MUX setting to the default setting of Serial Device 1. External Serial Connector Enables you to associate the External Serial Connector to Serial Device 1 by using this option. NOTE: Every time the system boots, the BIOS syncs the serial MUX setting saved in iDRAC.
Table 18. System Profile Settings details (continued) Option Description Uncore Frequency Enables you to select the Uncore Frequency option. Dynamic mode enables the processor to optimize power resources across cores and uncores during runtime. The optimization of the uncore frequency to either save power or optimize performance is influenced by the setting of the Energy Efficiency Policy option. Energy Efficient Policy Enables you to select the Energy Efficient Policy option.
Table 20. TPM 1.2 security information (continued) Option Description TPM Status Specifies the TPM status. TPM Command Controls the Trusted Platform Module (TPM). When set to None, no command is sent to the TPM. When set to Activate, the TPM is enabled and activated. When set to Deactivate, the TPM is disabled and deactivated. When set to Clear, all the contents of the TPM are cleared. This option is set to None by default. Table 21. TPM 2.
Table 22. System Security details (continued) Option Description Enable writes to SGXLEPUBKEYHASH[3:0] from OS/SW Enables or disables the Enable writes to SGXLEPUBKEYHASH[3:0] from OS/SW. SGX LE Public Key Hash0: Sets the bytes from 0-7 for SGX Launch Enclave Public Key Hash. SGX LE Public Key Hash1: Sets the bytes from 8-15 for SGX Launch Enclave Public Key Hash. SGX LE Public Key Hash2: Sets the bytes from 16-23 for SGX Launch Enclave Public Key Hash.
Table 22. System Security details (continued) Option Description If the current mode is set to Deployed Mode, the available options are User Mode and Deployed Mode. If the current mode is set to User Mode, the available options are User Mode, Audit Mode, and Deployed Mode. Table 23. Secure Boot Mode Options Descriptions User Mode In User Mode, PK must be installed, and BIOS performs signature verification on programmatic attempts to update policy objects.
A message prompts you to save the changes. NOTE: Password protection does not take effect until the system reboots. Using your system password to secure your system About this task If you have assigned a setup password, the system accepts your setup password as an alternate system password. Steps 1. Turn on or reboot your system. 2. Type the system password and press Enter. Next steps When Password Status is set to Locked, type the system password and press Enter when prompted at reboot.
NOTE: You can use the password status option with the setup password option to protect the system password from unauthorized changes. Redundant OS Control To view the Redundant OS Control screen, power on the system, press F2, and click System Setup Main Menu > System BIOS > Redundant OS Control. Table 24.
Table 25. Miscellaneous Settings details (continued) Option Description Power Cycle Request Enables or disables the Power Cycle Request. This option is set to None by default. iDRAC Settings utility The iDRAC settings utility is an interface to set up and configure the iDRAC parameters by using UEFI. You can enable or disable various iDRAC parameters by using the iDRAC settings utility. NOTE: Accessing some of the features on the iDRAC settings utility needs the iDRAC Enterprise License upgrade.
PXE boot You can use the Preboot Execution Environment (PXE) option to boot and configure the networked systems remotely. To access the PXE boot option, boot the system and then press F12 during POST instead of using standard Boot Sequence from BIOS Setup. It does not pull any menu or allows managing of network devices.
2 Document history Table 27.
