Modern information technologies / 3. Software

Ismailov А.О., c. t.s., Bermagambetov А.К., reader, Khalikov I.H., post-graduate student

A. Baitursynov Kostanay State university

CORPORATE NETWORKS DESIGN

The issues of design methodology hardly ever correspond with the current practice of projects’ realization by computer firms. It is difficult to say whether it is good or bad. Recently the culture of work execution including strict adherence to working-out stages, documentary support of each stage, record-keeping of working sessions and numerous acceptance tests acts has been lost.

Now every professional carries out projects in accordance with his own ideas of rational organization of labor. Nevertheless, it is possible to formulate some typical stages of projects implementation:

- Requirements analysis. At this stage it is necessary to formulate basic aims of the firm for which the project of a corporate network is worked out. For example, those aims that with the existing means and technologies are currently hardly attainable. The search of the systems alike is held, their advantages and disadvantages are analyzed, the possibility of successful experience use for the designed system is defined.

- Business model development. A business model may be defined as a functional model. It presupposes the description of business procedures, succession and interdependence of all the operations carried out, wherein special attention is paid not to the computer system, but to business practice.

- Technical model development. A Technical model describes in general terms what equipment should be used to achieve the aims set and defined in the business model. To develop a technical model it is necessary to carry out the hardware inventory and also to define a new system requirements. These requirements must be formulated on the part of the manager and the network end-users. Based on them it will be further possible to determine useful for the designed system equipment and also to define a functional set of necessary hardware products without specifying the equipment brands and models.

- Physical model. Detailed description of definite products, their amount, technical parameters and ways of interaction are described.

- The system installment and adjustment. At this stage the coordination of sub-contractors’ deliveries, configuration management, installment and adjustment of the equipment and also, in the majority of cases, the personnel instruction are carried out.

- The system testing. At this stage the required tests of the network stipulated by the contract with the performer may be carried out.

- The system maintenance and operation. This stage is viewed as an uninterrupted process, which may be maintained not by the performer, but by another contractor, which happens quite often.

For all the stages a detailed specification must be worked out. Task setting depends on the amount of work assigned for an outside performer and that which is to be done by the personnel of the firm. This stage is connected with the choice of the performer and conclusion of the contract with him.