Server 3 only comes up when the player pop (or time) is high enough on servers 1 and 2. Asylum is dying so seeing a player population high enough for server 3 to activate would be rare. Also with the low player pop, it doesn't make sense to have 3 servers when you could just focus your player base into only 2 servers and not thinning out numbers.
If I were you I'd get all my shit off server 3 as so0n as possible if it ever comes up. @terry