For 3.1, only the DAS as an MBean for a server called "server".
The ObjectName for this MBean is:
amx:pp=/J2EEDomain,type=J2EEServer,name=server,j2eeType=J2EEServer
Instances do not have this MBean. They will have an mbean with their own
instance name:
amx:pp=/J2EEDomain,type=J2EEServer,name=instance1,j2eeType=J2EEServer
Tom