Deployment Guide
System BIOS
54 Setting up BIOS on 15th Generation (15G) Dell EMC PowerEdge Servers | 508
• When set to Immediate, there is no delay for
power-up.
• When set to Random, the system will create a
random delay for power-up.
• When set to User Defined, the system will delay
power-up by that amount. The system
supported user defined power-up delay.
User Defined Delay
N/A
This field controls the user-defined AC Recovery
Delay. Enter a delay in the range of 60s to 240s. In
the future, this may increase to 600 seconds (10
minutes).
UEFI Variable Access
• Standard
• Controlled
This field provides varying degrees of securing UEFI
variables.
When set to Standard, UEFI variables are accessible
in the OS based on the UEFI specification.
When set to Controlled, selected UEFI variables are
protected in the environment and new UEFI boot
option entries are forced to be appended to the end
of the current boot order.
In-Band Manageability
Interface
• Enabled
• Disabled
When set to Disabled, this setting will hide the
Management Engine's (ME) HECI devices and the
system's IPMI devices from the OS. This prevents
the OS from changing the ME power capping
settings, and blocks access to all in-band
management tools. All management must be
managed by using the out-of-band technique.
Note: BIOS update requires HECI devices to be
operational and DUP updates require IPMI interface
to be operational. This setting needs to be set to
Enabled to avoid update errors.
Note: This option is only available on systems with
Intel processors.
SMM Security Mitigation
• Enabled
• Disabled
This option enables or disables additional UEFI
SMM Security Mitigation protections.
The operating system can use this feature to help
protect the secure environment created by
virtualization-based security. Enabling this feature
provides additional UEFI SMM Security Mitigation
protections. However, this feature may cause
compatibility issues or loss of functionality with
some legacy tools or applications.
Secure Boot
• Enabled
• Disabled
Allows you to enable Secure Boot, where the BIOS
authenticates each component that is executed
during the boot process using the certificates in the
Secure Boot Policy.
The following components are validated in the boot
process:
• UEFI drivers that are loaded from PCIe cards