Dell C6420 server

This page contains information out Dell PowerEdge C6420 could servers which we have deployed in our Niflheim cluster.

Dell OpenManage

Download the OpenManage software ISO image from the C6420_downloads page in the Systems Management download category.

Booting and BIOS configuration

Press F2 during start-up to enter the BIOS and firmware setup menus.

See How to inspect and change BIOS configurations on a PowerEdge C-Series server with SetupBIOS tool.

Reconfiguring the network in BIOS

The C6420 factory default network settings has the iDRAC port shared with a 1 Gbit LOM Ethernet port.

Our network configuration is designed to be:

  1. A dedicated iDRAC port.
  2. Server Ethernet port in port 2 of 10 Gbit mezzanine card.
  3. The server Ethernet port must do PXE boot before hard disk boot.
  4. BIOS boot (not UEFI boot).

The following procedure has been tested with BIOS 1.6.11 and iDRAC firmware 3.21:

  1. During system boot press F2 to go to System Setup.
  2. Enter iDRAC Settings:

    • Network:
      • NIC Selection: Dedicated
    • Thermal:
      • Thermal Profile: Maximum Performance
  3. Go back and enter Device Settings:

    • Read the Ethernet MAC address of the desired port.
    • Go to NIC in Mezzanine 3 Port 2:
      • NIC Configuration:
        • Legacy Boot Protocol: PXE
        • Wake on LAN: Enabled
  4. Go back to Finish:

    • Reboot the system (mandatory).
  5. During system boot press F2 to go to System Setup.
  6. Enter System Setup:

    • Boot Settings:
      • BIOS Boot Settings:
        • Change Boot Sequence: NIC, then Hard drive C:
  7. Go back to Finish:

    • Reboot the system (mandatory).

C6400 Chassis System Management

The C6400 chassis can be managed using the Dell EMC iDRAC_Tools for Linux. Download and install this software:

tar xzf DellEMC-iDRACTools-Web-LX-9.3.0-3379_A00.tar.gz
cd iDRACTools/racadm/RHEL7/x86_64
yum install srvadmin-*

Dell documentation refers to the racadm command, so make a link under that name:

ln -s /opt/dell/srvadmin/bin/idracadm7 /usr/local/bin/racadm

C6400 firmware upgrade

In the C6420_downloads page find Chassis System Management firmware. Read the firmware Release Notes file.

Verify the CM chassis firmware version by:

ipmitool raw 0x30 0x12
 01 cc 1b 01 43 01 00 00 00 04 02 00 01 2d 37 ff
 ff 08 c2 00 00 00 08 01 08 10 64 23 fa 01


  • Byte 4 - Major version (01 hex) - 01
  • Byte 5 - Minor version (66 hex) - 43

Install firmware updates by:

racadm update -f

Note: It may take 5-10 minutes after upgrading before the new firmware is active on the chassis.

IT-wiki: Dell_C6420 (last edited 2019-03-26 09:56:53 by OleHolmNielsen)