A Brief Intro to Virtualiztion

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Presentation transcript:

A Brief Intro to Virtualiztion

What is Virtualization? An abstraction Usually performed via software Many different types Hardware Software Data Network Our focus will be hardware virtualization

Hardware Virtualization Abstracts underlying physical hardware from operating systems and applications Allows multiple guest operating systems to run in parallel Physical resources are shared amongst all guest OS and virtualization software

Virtualization

Terminology Host Machine Hypervisor Virtual Machines The physical hardware/server Hypervisor The virtualization software Acts as the true ‘OS’ for the server Virtual Machines Instances of the virtualized OS Sometimes called Guest OS

Why Virtualize? Low CPU and memory utilization Overpowered and overpriced hardware Datacenter sprawl Power and HVAC High administrative labor costs OS Licensing

Benefits Fewer servers, with better system utilization Easier redundancy and disaster recovery Decreased downtime Ability to leverage patch management Greatly decreased build times Excellent testbed Sharing of pooled resources

Migration Converting a physical server to a VM often called P2V New VM created from image of existing OS and applications Turn off physical, start VM, done Rapid datacenter consolidation

Deployment Create a new VM Install OS Install apps Some products allow you to make templates – Click, click, deploy, done

Products For the Enterprise For the end user VMware ESX/vSphere, Virtual Center Microsoft HyperV For the end user VMware Player, Server Virtualbox Microsoft Virtual PC