Standard Model of System Architecture of Enterprise IT Infrastructure

Abstract

AbstractThis paper proposes a modern IT infrastructure model for an enterprise with own Data Centers and geographically dispersed organizational structure. The model includes a set of architectures, namely security, management, data storage, applications, and network. Architectures define the fundamental principles for building IT services and their relationships. Additionally, each architecture is used as the basis for setting up the requirements for the creation of IT services. The suggested principle for developing a typical system IT infrastructure is as follows: architectures define a set of services; IT services are provided to three groups of customers; IT services and customers are interrelated within five implementation scenarios; five architectures define the integration of IT services. The paper proposes to use the information technologies as IT Services, which aim at maintaining the following elements in a technically sound condition: network devices, computing equipment, data storage devices, automatic software deployment service, network service, perimeter security service, directory service, file and print service, data management service, business application service, IT management service, backup and recovery service, certificate management service, integration service. All customers of the Enterprise are divided into three main categories. Where appropriate, the customers may be further grouped within each category as follows: employees, partners and partner organizations, external customers. Implementation scenarios: Data Centers, department, remote office, Extranet, Internet Data Center. A method of optimizing the process of providing for certain categories of clients with Data Center services is proposed for mathematical modeling of the corporation’s IT infrastructure, which brings the solution to the incidence matrix for certain graph. As an example of designing elements of IT infrastructure, the design of optimal network architecture is considered. Examples of implementation of the proposed methodology for building IT infrastructure for service centers of PJSC “Ukrtelecom” are given.KeywordsIT infrastructureData centerIT servicesIT infrastructure architecture