hi, so i have had one server for a really long time, but i decided to get a 2nd one for a modded playthru and im curious, is it naturally clustered with my other server or do i have to do anything special about it? if it naturally clustered, can i make unclustered?

Clustering is super easy:

1) Buy a second server.
2) Make sure you have no items, survivors, or dinos currently uploaded on your first server.
3) Go to the cluster tab in the panel, and make sure to choose all of your servers that you wish to cluster.
4) Both servers will reboot and have a cluster built.

To uncluster:
1) Make sure you have no survivors, dinos or items uploaded on any of the clustered servers.
2) Go to your cluster tab, and deselect any servers you don't want clustered
3) All servers should reboot and then be clustered / unclustered per your settings.

One last note:
When moving between servers, make sure you pay attention to your password checkbox in the cluster menu.