3.2 virtualisation

Question 1

virtualisation

Answer 1

virtual version of a device, software or server

Question 2

storage virtualisation

Answer 2

combines multiple storage devices so that they appear to be just one device

Question 3

server virtualisation

Answer 3

allows one physical server to host multiple virtual machines each running separately

Question 4

benefits of virtualisation

Answer 4

cost cheaper in the long term since money is saved from not purchasing multiple physical devices

higher performance at a lower cost

tested in a secure environment

simplified response to recover after a disaster

Question 5

drawbacks of virtualisation

Answer 5

if not set up correctly could face serious performance issues

is a single physical system fails the impact will be greater

initial set up is complex

easier for hackers to take more information at once as the data is stored in the same place

Question 6

private cloud

Answer 6

have its own data centre

allows flexile and convenient data storage

business control over data management and security

need to spend alot of money on set up and maintenance

Question 7

public cloud

Answer 7

used third party service providers eg google to provide storage over the internet

pay for use service

data management and security maintained by cloud provider= business is dependent on them

Question 8

hybrid cloud

Answer 8

mix of onsite storage (private cloud) and third party ( public cloud) services

organisations can move workloads of data depending on their needs and costs

can use private cloud for sensitive info and public for less important data