Computing Architectures

An organization s computer interlocking is a major asset and pick ups extensive planning for proper function. The lucre intention process is a long and arduous task that requires knowledge of the business line need of the organization and the technical skills to achieve those needs. The network designer mustiness first address the major problem of what computer architecture should be occupied in a particular network. The distributed approach and central approach be the two possible choices a network designer has to guide from. minimize of cardinal & Distributed computer architecturesThere atomic rate 18 two mainframe architectures for a network of import and Distributed.Both architectures employ mainframe computers that hold massive essences of information, which are accessed by terminals, and whose location is non important to an end-user. An example would be an airway engagement system. Reservation entropy can be read and changed by an airline clerk, which is then sent to the mainframe to be updated. The system is updated in microseconds so another user does not see old information. The central architecture consists of one storage computer that holds data, whereas the distributed architecture consists of two or more than, little mainframes physically separated to serve the same purpose.Advantages and Disadvantages of Central vs. Distributed Data StorageAdvantages of Central Architecture less maintenance and changes must unaccompanied be reflected at one site. Less maintenance is required on the overall network because in that respect is only one mainframe, whereas in the distributed approach there are more mainframes to maintain. Secondly, changes that are entered into the system by a user need to be updated only at one mainframe instead of universe changed at more than one. For example, John has made a reservation at 800 AM for Monday to mainframe A and currently it is updating itself.At the same time Linda is accessing mainframe B, which is not updated yet. She sees the 800 AM one-armed bandit for Monday as open and reserves it for her customer. The data is now corrupt. This is a precise simple example of what can happen with the distributed architecture. With the central architecture the data is updated in one place, leaving no room for error. Disadvantages of the Central Architecture A higher load on the network is incurred due to having only one central data access point. Second, there is no data wordiness, which means, if the one mainframe goes shine the network goes down.Third, unauthorized access would leave more data to a hacker compared to the distributed approach. Advantages of Distributed Architecture more redundancy since there are more mainframes with same data, more secure because a hacker doesn t have access to all the data, and less capable for entire network to go down since all data is not stored in one place. Disadvantages of Distributed Architecture More maintenance is required beca use there are more mainframes and data updates must be updated on more than one mainframe as stated earlier.Value of ProjectThe value of the stick proscribed is enormous due to the information technology being a major asset for a company. Data retrieval and transportation is a critical part of most organizations and a must for a company to do business on any scale. That is why a network architecture decision must be made for the best data impart method. The wrong choice get out be a tremendous indebtedness to an organization for two reasons an undertaking of this kind is expensive and a network must grow as it gets older-meaning it must be planned out from the start correctly or else it will be of no constitute later on.Methodology in Evaluation of Client Sever vs. mainframe computer ArchitectureThe network designer has a set of predefined characteristics in order to choose the correct architecture for a particular network including the physical coat of the network, cost, e fficiency, and performance. These are general determinants that must be taken into consideration in the lead an architecture is chosen. SizeGenerally, a network that would reach globally, carry variable surface data, and have many users in different locations would be better desirable for a distributed approach.The central approach would be ideal for a mild branch office to a statewide network, with a maximum number of users at 1000, and carry continuous or steady traffic. CostA bigger global network would be less concerned with cost, whereas a little network would be more concerned with it. Cost depends on the scale, amount of data that will be transmitted, complexity of work, etc. An introduction of a network usually involves outside contractors with the aid of in-house network operators. The least cost will be determined by adding up work do by the outside vendors, equipment, software, consulting time, and proposals from different bidders.EfficiencyA standard measure in te lecommunications is the 99% quality measure. A network should be totally operable, even if it is down 99% of a year. This can be tested before the installation takes place by running tests and simulations by vendors who are attempting to gain your business. PerformancePerformance will be reflected by the throughput of the network. How fast can data be delivered crosswise the line to from the sender to the destination This will vary from the type of communications protocol used in both architectures depending on the type of data to be transported. This can also be tested with simulations.