Virtualization &

Cloud Computing

Akhil Raj

VIRTUALIZATION

What is Virtualization

Virtualization is one of the hardware reducing, cost saving and energy saving technology that is rapidly transforming the IT landscape and fundamentally changing the way that people compute.

With virtualization solutions you can reduce IT costs while increasing the efficiency, utilization and flexibility of their existing computer hardware.

With Virtualization it is possible to run multiple operating systems and multiple applications on the same SERVER at the same time, increasing the utilization and flexibility of hardware.

Before Virtualization

Single OS image per machine

Software and hardware tightly coupled

Running multiple applications on same machine often creates conflict

Inflexible and costly infrastructure

After Virtualization

Hardware-independence of operating system and applications

Virtual machines can be provisioned to any system

Can manage OS and application as a single unit by encapsulating the Machines into virtual

Type 1 or Bare Metal virtualization

Type 2 or Hosted Virtualiazation

Types of Virtualization

Type 1 or Bare Metal Hypervisor

Type 2 or Hosted Virtualization

Improve disaster recovery Increase uptime Increase Resource Pooling Reduce hardware vendor lock-in Faster server provisioning QA/lab environments Isolate applications Save energy, go green Reduce the data center footprint

Advantages

What is cloud Computing ?

It is a paradigm in which information is permanently stored in servers on the internet and cached temporarily on clients that include desktops,table computers,notebooks,Wall computers,Handhelds entertainment centers etc.

It puts customers information and or applications in a virtual “cloud” that can be accessed through the web.

Users do not have or need knowledge, control, ownership in the computer infrastructure

Cloud Computing

Traditional Software

Why cloud computing..???Cloud computingVs

• Public Cloud: The services are delivered to the client via the Internet from a third party service provider.Example: Amazon

• Private Cloud: These services are managed and provided within the organization. There are less restriction on network bandwidth, fewer security exposures and other legal requirements compared to the public Cloud.Example: HP Data Centers

MAJOR CLOUD COMPUTING SERVICES

Infrastructure as a Service (IaaS) is a cloud model which allows organizations to outsource computing equipment and resources such as servers, storage, networking as well as services, such as load balancing and content delivery networks. The IaaS provider owns and maintains the equipment while the organization rents out the specific services it needs, usually on a "pay as you go" basis.

Iaas

Platform as a Service (PaaS) is a cloud model designed for software developers that streamlines the development process by shifting specific aspects of systems management to the service provider. PaaS is used to develop web and mobile applications using components that are pre-configured and maintained by the service provider, including programming languages, application servers and databases

Paas

Software as a Service (SaaS) is a cloud model that delivers on-demand applications that are hosted and managed by the service provider and typically paid for on a subscription basis. SaaS solutions offer a number of advantages over on-premises deployments, including minimal administration and maintenance, anywhere access, and in many cases improved communication and collaboration

Saas

Hosted services are outsourced information technology (IT) systems and functions. A hosted service provider owns and oversees infrastructure, software and administrative tasks and makes the system available to clients, usually over the Internet.

Eg : gmail, google docs, quickbooks, skype, Github etc

Hosted Services

On-demand self-service Broad network access Resource pooling Rapid elasticity Measured service

Characteristics of cloud computing

Top Cloud Providers

• Amazon• Microsoft windows Azure• Savvis• Google App Engine• Vmware cloud• Rack space • Go grid

CONCLUSION:

Finally ,cloud apps don’t eat up your valuable IT

resources

Thus cloud computing provide a super-

computing power. This cloud of computers

extends beyond a single company or enterprise.

The applications and data served by the cloud

are available to broad group of users, cross-

enterprise and cross-platform