Virtualization and cloud computing

Virtualization and cloud computing

• What is virtualization?

The essence of virtualization is to divide existing computer resources into several computer resources through virtualization technology, these computer resources are independent of each other.

The ultimate goal is to improve computer utilization and maximize computer flexibility.

• The purpose of Virtualization

The simplified IT infrastructure and resource management methods help enterprises reduce IT resource overhead, integrate resources, and save costs.

• Virtualization Classification

Platform Virtualization	Server Virtualization	Software virtualization-resident architecture-VMware Workstation
		Hardware virtualization-native architecture-hypervisor
	Desktop virtualization

 

Resource virtualization	Storage Virtualization
	Network Virtualization

 

Application Virtualization

Presentation Layer Virtualization

 

• Virtual sanjianke

VMware Service Virtualization leader, founded in 1998, is headquartered in Palo Alto, USA's California welfare region. It is the main controlling shareholder of EMC, a giant in the memory industry.

Microsoft acquired connectix in 2003 before obtaining the virtualization technology, and then officially entered the virtualization field.

Citrix application virtualization leader, founded in 1989, headquartered in Nevada, USA

 

Other virtualization Manufacturers

Oracle, RedHat, and parallels

 

 

• Cloud computing

1. features:

On-demand service resource pooling Based on interconnected networks

High-availability resource control

 

2. Cloud Computing Architecture

Infrastructure as a service (IAAS) Infrastructure as a service

Platform as a service (PAAs) platform as a service

Software as a service (SAAS) software as a service

 

These three layers: for users, they are independent of each other, because the services provided by each layer are different. From a technical perspective, layer-3 services are mutually dependent, but not interdependent.

3. Cloud Computing Model

Major public clouds in the public cloud world: Microsoft's windowsazrue, goolge's apps, Amazon's AWS

Advantages: low cost, high flexibility, and large-scale application

Advantages of private cloud: high data security and high Resource Service Quality

Hybrid cloud public cloud and private cloud

Advantages: users can enjoy the privacy close to the private cloud and the cost of public cloud, and can quickly access a large number of computing capabilities located in the public cloud to meet their needs.

The "inspur" proposes that the industry cloud should be established and maintained by organizations that play a leading role or master key resources within the industry or a region, and should be either open or semi-open, provides paid or free services to the industry or relevant organizations and the public.

 

4. Relationship between cloud computing and Virtualization

There is no inevitable relationship between the two. To achieve cloud computing, there is no need for virtualization. However, to improve resource utilization and facilitate management, cloud computing still needs virtualization. virtualization is only one way to achieve cloud computing.