A variety of services are offered to server management services in order to maintain server health and availability. Monitoring status, uptime and recurring issues are some of the possible services. This includes updating the server and ensuring that the configuration and setup of protocols on the server is correct.
A server management tool is a software program that monitors the performance of a network and alerts administrators to any problems. It also provides control over the health of multiple servers within a network.
More info @ What is Managed Server Service