Sunday, 19 March 2017

Hypervisor's and Virtual Machines

Virtualization is one of the important technology for cloud computing. Without virtualization cloud computing could not be possible. Virtualization provides the resource consolidation for the cloud service providers. The service providers and users can manage there resources very efficiently. The resources (Storage, Network & Processors) can be divided and use as per the use.

Types of Virtualiazation

1. Server Virtualization
2. Network Virtualization
3. Storage Virtualization
4. Desktop Virtualization
For implementing virtualization a software is needed called as Hypervisor or Virtual Machine Manager (VMM). The physical resources can be divided into virtual resources. The cloud Service providers create different virtual machines on a physical server as per the number of users and their need.
There are two types of VMM

* Type 1 also called as Bare metal Hypervisor because it is directly installed on the physical hardware

* Type 2 also called as hosted Hypervisor because it needs a host operating system for installation


Creating a Virtual Machine using Type 2 Hypervisor
One of the most used Type 2 VMM are Virtual Box and Vmware Player
Lets assume the user need Operating System: Ubuntu 64 or 32 bit, Maximum Disk Size: 50 GB, RAM Size: 1 GB, Number of Processor Cores: 2
You need the iso image of the operating system that you want to install in the newly created virtual machine.
Download the Hypervisor form the links below
Virtual Box
Vmware Player

1. Install the hypervisor as per your Host operating system
2. Create a Virtual Machine using VB or VW UI
3. Configure the VM as per the given requirements
4. Install the guest OS
5. Boot the Guest OS
If you are installing ubuntu on windows then the host operating system is windows and the guest operating system is ubuntu

Installing XEN Hypervisor

Xen is a type 1 Hypervisor.
See the installation of Xen Hypervisor

How to create virtual machine using XEN

Boot the XEN server and open the terminal
Check that Dom 0 is running or not using xm li
Open the x terminal usingvm-install&
Follow the simple instructions

FAQ

a) Need of Virtualization in cloud computing.
b) Virtualization Taxonomy.
c) What is VMM (Hypervisor) and its types.
d) What is Full, Para Virtualization.
e) XEN Architecture and its working.
g) xl and xm commands.
h) XEN terminology.

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