haha, 0lag when I hear it, it's like you speaking of a lineage2 server... it's minecraft, small server with low amount of players :D
I remember when minecraft was in open beta in 2009 and I used to play with some friends on my own freaking server :D we created some shit and we put much TNT around the shit we created and we hit it with a shovel, and the damn thing went BOOM and the server frozen and died, RIP, had to restart the PC :D