Virtualization

Traditional App/Server Single OS image per machine Software and hardware  tightly coupled Underutilized resources Inflexible and costly infrastructure

Virtualization - Green Focus The Reality: Most servers only use 5-15% of their capabilities on average, while consuming 60-90% of their peak power. The Solution - Virtualization:  Use one server to host multiple applications. Reduce energy consumption Reduce CO2 emissions Running fewer, highly utilized servers frees up space and power. Less space and power is better for environment and saves money.

What is virtualization? Virtualization allows one computer to do the job of multiple computers. Virtual environments let one computer host multiple operating systems at the same time

Virtual Server Model 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  them into virtual machines

How does it work? Virtualization transforms hardware into software. It is the creation of a fully functional virtual computer that can run its own applications and operating system. Creates virtual elements of the CPU, RAM, and hard disk.

Virtualization… It is divided into two main categories: Platform virtualization involves the simulation of virtual machines. Resource virtualization involves the simulation of combined, fragmented, or simplified resources.

Virtualization - Why? Reduce Real Estate Needs Increase Up Time Reduce CO2 Emissions, Power and Cooling Requirements Increase Flexibility Reduce Overall Costs

Pros Benefits include freedom in choice of operating system. It saves time and money. Consolidates server and infrastructure. Makes it easier to manage and secure desktop environments.

Cons Only powerful computers can successfully create virtual environment. Requires training to operate.

Examples of Virtual Servers Oracle Virtual Box VM WARE QEMU Windows Virtual PC

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