Can anyone help me:

My Environment is :
edir01 + IDM4 (driverset01)
eidr02 + IDM4 (driverset02)
edir03 + IDM4 + RBPM + Reporting Module (driverset03)

These 3 edir (r/w replica) are at the same Tree, every driverset has it's own connecting applications

Now I want to install reporting module to get the IDV information (current data and history data),
should I install EAS on every edir or should I install on edir01?

If I have to install 3 EAS, can I configure 3 EAS to a defined postgreSQL

Thank You Very Much ~