Computer system (10, 20), comprising: - at least one server computer, wherein the server computer comprises at least one processor, a main memory as well as a system management module in the type of an integrated microcontroller with its own main memory and non-volatile memory as well as a network interface; - a management station, wherein the management station is configured to manage a plurality of server profiles and to select at least one server profile from the plurality of server profiles and assign it to the at least one server computer, wherein each of the server profiles has at least one virtualized network identifier that serves to unambiguously identify a server service assigned to the server profile; and - at least one data network, via which the at least one server computer and the management station are coupled in a data-technical manner; wherein the system management module of the at least one server computer is configured to - send at least one request for retrieving or confirming at least one virtualized network identifier of a server profile assigned by the management station, to the management station, on activation of the system management module in a pre-boot-phase of the server computer; - if a reply of the management station for transmission or confirmation of the at least one virtualized network identifier has been received in response to the request, configure at least one network component of the server computer, in the pre-boot phase, using the at least one virtualized network identifier transmitted or confirmed by the management station, and to subsequently start the server computer using the configured network identifier; and - otherwise, to prevent a start of the at least one server computer with a virtualized network identifier previously transmitted by the management station. - at least one server computer, wherein the server computer comprises at least one processor, a main memory as well as a system management module in the type of an integrated microcontroller with its own main memory and non-volatile memory as well as a network interface; - a management station, wherein the management station is configured to manage a plurality of server profiles and to select at least one server profile from the plurality of server profiles and assign it to the at least one server computer, wherein each of the server profiles has at least one virtualized network identifier that serves to unambiguously identify a server service assigned to the server profile; and - at least one data network, via which the at least one server computer and the management station are coupled in a data-technical manner; wherein the system management module of the at least one server computer is configured to - send at least one request for retrieving or confirming at least one virtualized network identifier of a server profile assigned by the management station, to the management station, on activation of the system management module in a pre-boot-phase of the server computer; - if a reply of the management station for transmission or confirmation of the at least one virtualized network identifier has been received in response to the request, configure at least one network component of the server computer, in the pre-boot phase, using the at least one virtualized network identifier transmitted or confirmed by the management station, and to subsequently start the server computer using the configured network identifier; and - otherwise, to prevent a start of the at least one server computer with a virtualized network identifier previously transmitted by the management station.