2016-Feb-08 Tuesday

From 10:00 AM TO 05:00 PM:

I read about Virtualization techniques from online tutorials and various articles.Done the assignment as well.

Virtualization:

Virtualization is a technology to run multiple same or different Operating System, which is completely isolated from each other. Which means separating hardware from a single operating system.

Virtualization Types

Hardware Virtualization
Operating-Sytem level Virtualization

Hardware virtualization

Hardware virtualization refers to taking the components of a real machine and making them virtual. This virtual machine works like the real machine and is usually a computer with an operating system.
Ex:= VMware ESX, MS Virtual Server, Xen and others.

Operating-System Level Virtualization

OS-level virtualization is in single os, where the OS kernel allows for multiple isolated user space instances
good for server consolidation.
Ex:= Chroot, Openvz, Jails

Features of Virtualization

Reduce number of servers.
Reduce Cost Ownership.
Improve availability and business continuity.
Increase efficiency for development and test environments.

Hypervisor:

Hypervisor is a software layer sits between hardware and OSes which will interact with hardware and resourses and provide interface to share the available to virtual containers.