Symptom

If a Dynamic Host Configuration Protocol (DHCP) writer is included in the backup selection for a system state backup, the following warning is presented:

WARN: 18:01:15 Unsupported feature detected for VSS writer 421f3619-be9a-c81e-ad93-9eea6f4c0f92 (restore method mode)

A system state restore of this writer may not work correctly, although there would be no issue with a Full System Recovery (FSR).

Solution

To circumvent this problem:

Backup the DHCP manually on the original host, but exclude the DHCP writer itself from the backup selection.

A simple backup of DHCP can be done by creating a scheduled task to export the configuration using PowerShell:

Export-DhcpServer -ComputerName DC01 -File "C:\DHCP-Config.xml" -Force