You can enable the secondary server configuration in your pandora_agent.conf, in order to be able to send the agent data to a "backup" server. If secondary_mode is set to always, you will be able to send this data to both servers at the same time.
# Secondary server configuration
# ==============================
# If secondary_mode is set to on_error, data files are copied to the secondary
# server only if the primary server fails. If set to always, data files are
# always copied to the secondary server.
#secondary_mode always
#secondary_server_ip localhost
#secondary_server_path /var/spool/pandora/data_in
#secondary_server_port 41121
#secondary_transfer_mode tentacle
#secondary_server_pwd mypassword
#secondary_server_ssl no
#secondary_server_opts
Other than that, if you need to report to more servers, you will have to install more agents (1 per 2 servers)... however, you need to configure it accordingly (this means different ports and names for each connection) and this configuration is not oficially supported.
Greetings.