This model describes monitoring by an agent for Agentless Monitoring used when a server does not have an Agent installed.
The Manager/Proxy Manager remotely collects performance information from servers that do not have Agents installed. The information that is collected is then managed collectively on the Manager.
The Manager can collectively manage both servers with Agents installed and servers without Agents installed.
One Manager can manage about 300 servers. The exact number, however, depends on the Manager's disk performance and memory usage.
If a server already has an Agent installed on it, then you cannot monitor performance from the monitoring server (Manager) that an Agent is connected to using an agent for Agentless Monitoring. Attempts to perform such a connection may result in inconsistencies in the data collected.
Point
About the number of servers to be able to manage
When collecting information from virtual resources (VMware, Hyper-V, Red Hat virtualized functions (Xen), Red Hat virtualized function (KVM), and Solaris container), count the number of virtual machines
When collecting information from OS(Windows, Linux, Solaris, AIX, HP-UX), count the number of servers to be monitored.