We have one DHCP server with one Superscope and around 15 scopes in it.
As we had some issues on our VLAN environment, we had to remove all 15 scopes from the superscope. When the last scope was removed from the Superscope, superscope was deleted automatically.
Now, everything is working fine, but after the server restarts, users complained that they still experience 'old' DHCP issues when physically changing VLAN's.
Therfore, I've checked the DHCP and I was more than surprised when I've seen that all DHCP scopes are located in Superscope. As if nothing was done before the server restarted.
It looks like that DHCP was restored or like DHCP superscope was recreated.
Should I mention that DHCP server is using Windows Server 2008 R2 OS.