Server diagnostics together with automatic OS installation is the key feature of DCImanager.
If a new server is added, DCImanager can check the correctness of its operation and add its configuration to the database. If the server has already been used, the control panel will check conditions of its parts and update information in the database, if needed.
Such parts as HDDs might be changed in the server from time to time. If information about the change has not been added manually, DCImanager can update it automatically for every new or available server.
Recovery mode is used when a server cannot recover after reboot, and there is no physical or IPMI access to the server.
After having added special recovery templates to DCImanager, you can use them in operation for any server. Using the template allows rebooting the server and connecting to it over SSH for OS re-installation.