7.3.1 The key features of virtual enviroments

What is virtualisation?

technology that allows a single physical hardware system to be separated into multiple simulated environments

What is a hypervisor?

Software that connects to the hardware to allow the splitting of one system into separate environments known as VMs

Name types of Virtualisation?

• Data virtualisation

• Desktop virtualisation

• Server virtualisation

• Os virtualisation

• Network function virtualisation

What happens in Data Virtualisation?

allows organisations to treat data as a dynamic supply. has functions that bring data from multiple sources, transforms and accommodates new data sources

What happens in Desktop Virtualisation?

• allows an organisation to install multiple OSs onto a single machine

• allows a central admin to install simulated desktops environments onto the machine

What happens in server virtualisation?

gives the server the ability to perform even more functions and uses partitioning

What happens in OS virtualisation?

• allows an organisation to run multiple OS at the same time

• Reduces hardware costs and increase security as they can all be isolated and monitored

What happens in Network function Virtualisation?

separatees the networks key functions so they can be distributed amount different environments

Name Key featues of a VM?

• increased security - vm manager can control and monitor guests

• sharing - creates separate computing environments can reduce number of servers needed

Name benefits of using a VM?

• Efficient use of Hardware

• Continuous availability - access anytime anywhere

• simplified and faster set up

Drawbacks of using a virtual system?

• high initial investment cost

• Risk to data

• Scalability is challenging

• Reduced performance