* Network access for **agent based monitoring**. In this network, Pandora FMS server can be reached from the software agents installed on monitored machines.
* **Software agents without access to a Pandora FMS Server**: In this case, the proxy characteristics of software agents is used or either a Satellite Server as a software agent proxy.
* The need to monitor **different networks for remote monitoring with the server:** In this case you may make use of the //Satellite server// or connect several different Pandora FMS servers to the same database.
* **Reporting duality:** Additionally, you may configure agents to report to two different Pandora FMS servers, although they can only be managed by one of them.
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* **Fragmented management:** It is pretty useful if you are required to **delegate the administration of part of the equipment** to different personnel with different access levels. This is more of a management issue rather than an architectural problem. It can be solved by the [[:en:documentation:04_using:11_managing_and_administration|assigned permissions on policies]].
* **Large-Volume Network:** Consisting of thousands of network testing processes which must be distributed in different 'remote monitoring probes'. Given their large numbers (over 50,000), they cannot be centralized into a single server. To that end, use servers in broker mode that distribute the remote check load.
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* **Redundant servers**: For security reasons, in case primary hardware fails, a [[http://:en:documentation:05_big_environments:06_ha|server in HA mode]] may automatically relocate and delegate the monitoring workload.
* The need to install [[:en:documentation:05_big_environments:06_ha|a server on HA]]: for security reasons, in case primary hardware fails. You will see how to mount two servers, one "passive", waiting for the active to stop responding and start up. There are different ways to do this.
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* The need to **monitor a large volume of systems and manage them in a centralized way** (more than 2500 agents). In order to do so, different Pandora FMS Servers are configured to be coordinated by the system called **Metaconsole**'. They can be linearly scaled in this way.