Dell R6420 BIOS Settings

The following were set in the Dell R6420 BIOS at UM prior to first build. Specifics of IP addresses should be modified for R6420 at MSU. We used an old Mac mini-DisplayPort to VGA adapter with the KVM to talk to each sled individually.

Best practice seems to be to set the iDrac Settings first, then the Device Settings, then finally go to the System BIOS settings. That will minimize the number of necessary reboots.

iDrac Setup

  • iDRAC Settings
    • Manually set all iDRAC IP, including
    • Network
      • iDrac port setup
        • NIC Selection: LOM1
      • Set the name, eg, rac-dc32-7-23 at UM, or rac-104-33 at MSU
      • Disable DHCP
      • Set the correct IP address for the rac
      • Gateway IP ( [ UM (MSU) ]
      • Netmask (
      • DNS primary (
      • Enable IPMI over LAN
    • Thermal Profile
      • Set to "Maximum Performance"
    • User Configuration
      • Set the IPMI password

Following the iDrac setup, the rest of the configuration can be performed from a web browser, or you can continue on the KVM to complete the setups

Disk and NIC Setup

  • Device Settings
    • RAID Controller -- You will add a new vdisk with both disks. Named "System" at UM
      • Configuration Management
        • Convert to RAID Capable
          • Select both disks, accept, and exit back to the Device Settings menu
    • RAID Controller
      • Configuration Management
        • Create Virtual Disk
          • RAID0, then
          • Select Physical Disks
            • Select Media Type -- Both
            • Select both disks, then apply all changes
          • Name the disk, eg, System
          • Create Virtual Disk, confirm, and exit back to the Device Settings menu
    • Note the Mac addresses for use by the Cobbler build

System BIOS

  • System BIOS settings
    • Under \x93Memory Settings\x94,
      • Did NOT Enable \x93System Memory Testing\x94
      • Left it running \x93Optimizer Mode\x94
    • Under Processor Settings be sure the Logical Processor is "Enabled" and Number of Cores per Processor is "All"
    • System Profile Settings
      • Set to \x93Performance\x94
    • Miscellaneous
      • Disabled F1/F2 Prompt on Error
      • Set correct UTC Time
    • System Security (at MSU)
      • Should probably set AC Power Recovery to "off"
    • Boot Settings
      • Change from UEFI to BIOS, Boot Sequence Retry to "Disabled", save, then reboot and re-enter Boot Settings
      • BIOS Boot Settings
        • Set NIC1 as first device, hard drive second

-- BobBall - 03 Apr 2018

This topic: AGLT2/ROCKS > WebHome > DellR620Bios > DellR6420BIOS
Topic revision: 04 Apr 2018, BobBall
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