Hey Jim
- First thing is ofc a backup in case of a failed transition.
- You will need to delete the failover relationship between the Source DHCP and its failover partner.
- Stop the DHCP service (down time).
- PowerShell export from source.
- Export-DhcpServer -File C:\DHCPdata.xml -Leases -Force -ComputerName old.network.local -Verbose
- Remove authorization from old DHCP.
- Install the DHCP on the new server.
- PowerShell import to destination.
- Import-DhcpServer -File C:\DHCPdata.xml -BackupPath C:\DHCP\ -Leases -ScopeOverwrite -Force -ComputerName new.network.local –Verbose
- Authorize the new DHCP.
- Restart the service on the new server.
Check and make sure its working fine.
There are details you should keep in mind.
- The failover partner will lose all scopes and they will only remain on the dhcp server you used to delete the failover relationship.
- PowerShell export and import commands does not export or import leases by default, and you will also need few more parameters.
you will need to stop DHCP services so there will be lil down time.
Here are the links if you would like to check the source for extra reading which I recommend.
PowerShell DHCP commands - video2.skills-academy.com
Migrate DHCP server - video2.skills-academy.com
Migrate an existing DHCP failover deployment - video2.skills-academy.com
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