If I have a single MOM and 6 collectors: I want to make sure I have set up correctly.
Collectors just need these components installed -- Enterprise Manager & Database.
Collectors do not need these components:
Team Center Master, or have Command Center Server installed.
Actually the MOM requires the following:
EM, DB, Team Center Master (if you choose to do so) although this is not the same as APM Team Center, and Command Center Server.
Collectors require the following: EM only. The DB should not be installed on all the Collectors, rather, after you install the DB on the MOM, when you go to install the Collector, for the DB you would choose to connect to an existing DB.
You can also choose to put the Command Center Server on the Collectors if you wish but it is not necessary. Keep in mind if you select complete install on the Collectors, then it will install the Command Center Server automatically.