Understanding Business IT Systems - Coggle Diagram
Understanding Business IT Systems
3.1 Types Of Servers
Print-a print server is a type of server that connects printers to client computers over a network
Hypervisor-a program used to run and manage one or more virtual machines on a computer
File-a file server is a computer responsible for the central storage and management of data files so that other computers on the same network can access the files.
Database- Database server is a software product with the primary function of storing and retrieving data as requested by other software applications
Application-Application servers are designed to install, operate and monitor the applications shared by other devices on the network
Mail-it receives from clients and stores and sorts them before they are sent to there final destination.
LAN(Local Area Network)
- A collection of devices connected together in one physical location, such as a building, office schools
WAN (Wide Area Network)
- Is a data network, usually used for connecting computers, that spans a wide geographical area. WANs can be used to connect cities, states, or even countries.
3G & 4G
MAN (Metropolitan Area Network
- Often a high speed network to allow sharing of regional resources (Similar to large LAN)
Series of wireless routers distributed across a city
A telephone company network that provides a high speed DSL line to the customer
Cable TV network in a city
- Devices that use satellites that stay in geo-stationary orbits around the earth
- Voice communication in business includes group phone calls or teleconferencing cng
Server Virtualisation is where the separate systems with different functions in a server are combined into one or an amount of hardware devices smaller than the original amount. Hypervisors such as virtual machine software can be used to divide the allocated hardware in a system and allocate it to different functions of the server.
Each virtual server can run its own operating systems independently
The server is divided up by using software application
Server virtualization is used to mask server resources from server users
Client virtualization is an operating system that is managed centrally on a server and executed locally on a client device a virtual machine environment is inside the users machine so that the users machine can host multiple virtual machines.
There are many different virtualisation software and can all run lots of different operating systems
It serves a good purpose to users who need better compatibility
There is limitless choice when running on a high performance desktop computer
Storage virtualisation is the idea of dividing and segmenting the storage capacity on a device to essentially create seperate drives. It is mostly used in VM or server virtualisation to give the hypervisor its own area of storage for the virtualized system.
It is used to enable independent management of storage or data
It isolates the internal functions of the storage system from the host computers or the general network resources
Cloud virtualization is an IT environment that abstract,pool and share resources across an a network to be able to create a cloud so it is like one big storage device it uses an operating system like linux to eb give users a layer of independence across public and private environments
It is essentially using shared resources for abstract environments
It takes place over multiple machines on a network
They use the cloud to virtualise the components and require a internet connection.
This is where resources and hardware. It allows multiple virtual systems to be created within a solitary physical system. Its main reason for being used is the savings it can offer by using one system for multiple users which also helps save time.
3.5 Types of Business systems
CRM - Customer Relations Management-Customer relationship management is the process of managing interactions with existing as well as past and potential customers. It is one of many different approaches that allow a company to manage and analyse its own interactions with its past, current and potential customers.
MIS - Management Information systems-A management information system is an information system used for decision-making, and for the coordination, control, analysis, and visualization of information in an organization. The study of the management information systems involves people, processes and technology in an organizational context.
Help Desk-A help desk is a resource intended to provide the customer or end user with information and support related to a company's or institution's products and services.
SOP - Standard Operating Procedures-A standard operating procedure is a set of step-by-step set of instructions compiled by an organization to help workers carry out routine operations. SOPs are in place to achieve efficiency, quality output while reducing miscommunication and failure to comply with industry regulations.
3.3 Networking characteristics
Data rates-A term to indicate the transmission speed of a network
Error rates-A term to indicate the number of errors over a network
Area distributions-the area that the specific network can be accessed in
Communication links-A term to indicate the number of errors over a network