7.3.2 The benefits and drawbacks of the use of virtual environments for organisations in a variety of contexts Flashcards
Explain:
Efficient use of hardware of virtual environments
Benefits of using virtual environments
Virtualisation means many instances can be made on one piece of hardware, maximising effective use to a wider variety of guests - reducing costs and effectives increased
Explain:
Continous availability of virtual environments
Benefits of using virtual environments
Allows access at any time and easy to move instance from one server to another without shutting down and restarting
Explain:
Simple recovery of virtual environments
Benefits of using virtual environments
Duplications, backups and recories are much easier with virtual instances where tools are available for nearly real-time backup and mirroring capabilities
Explain:
Simplified and faster setup of virtual environments
Benefits of using virtual environments
Compared to building and setting up new physical hardware, virtual environments can be setup quickly within minutes
Explain:
Easier migration to the cloud for virtual environments
Benefits of using virtual environments
Most of the data is on one server with virtualisation versus many machines when converting to the cloud
State:
3 benefits of using virtual environments
- Efficient use of hardware
- Continuous availabilty
- Simple recovery
- Simplified and faster setup
- Easier migration to the cloud
Explain:
High initial investment costs of virtual environments
Drawbacks of using virtual environments
Initial setup of servers and storage is higher than a regular installation of a system
Explain:
Risk to data to virtual environments
Drawbacks of using virtual environments
Data may be hosted on a third part resource (cloud) which could be vulnerable to attacks, unauthorised access
Explain:
Scalability challenges for virtual environments
Drawbacks of using virtual environments
Easy to implement, but not in a short period of time because software, security, storage and resource availability have to be considered - can be time-consuming because a third party can be involved
Explain:
Reduced performance for virtual environments
Drawbacks of using virtual environments
Virtual environments provides optimal use of resources but additional performance may not available if required by a VE - resources may not be shared equally or be shared depending on the task being carried out - if performance needed is not available then time to complete increases
Explain:
Unintended server sprawl for virtual environments
Drawbacks of using virtual environments
When more servers are created, the workload to a administrative staff increases because new virtual environments, and therefore virtual servers are created
State:
3 drawbacks of using virtual environments
Drawbacks of using virtual environments
- High initial investment costs
- Risk to data
- Scalability is challenging
- Reduced performance
- Unintended server sprawl
