Introduction to Virtualization

Info
Level: Beginner
Presenter: Eli the Computer Guy
Date Created: February 2, 2012
Length of Class: 59 Minutes
Tracks
Virtual and Cloud Computing
Prerequisites
Introduction to Cloud Computing
Purpose of Class
This class teaches students the basic concepts that required to deploy Virtualization in the real world.
Chapters
Introduction (00:00)
Overview (01:10)
Type 1 Hypervisors (13:45)
Type 2 Hypervisors (33:31)
Converting to Virtualization (40:51)
Final Thoughts (47:05)
Class Notes
Introduction
Virtualization allows you to separate the Operating System from the underlying hardware
Virtualization is NOT the same as Cloud Computing. Virtualization is a Type of Cloud Computing.
Hypervisors are the software that Operating System "Instances" run on.
Overview
Virtualization allows you to easily migrate servers between pieces of physical hardware
Virtualization allows you to consolidate multiple cheap physical servers into one server
An "Instance" is a "Virtual Computer" installed on a Hypervisor.
Type 1 Hypervisors
Called Bare Metal Hypervisor
Installs directly on to hardware
You use Management Software installed on a different computer to manage a Type 1 Hypervisor box.
Based on XEN.
Generally the Hypervisor is free, but you pay for the Management software
Over Allocation allows you to allocate more total resources to the Instances of the operating systems then the physical server has. At any one time all Instances CANNOT use more resources then the total amout that the server has.
Type 2 Hypervisors
Called Hosted Hypervisor
Type 2 Hypervisors are installed onto an Operating System such as Windows 7, OSX or Linux. (VirtualBox, Virtual PC)
Be careful allocating resources to virtual machines. You have the ability to allocate so many resources to the virtual machines that you crash the host machine.
Networking can start acting "weird" on the host machine when Virtual Machines are running
Converting to Virtualization
Vendors of Virtualization software have "conversion" software that will convert an Operating System that installed on a Physical Computer into a Virtual Machine
Many pieces of Backup Software no backup servers directly into a Virtual Machine.
Final Thoughts...
Be careful of licensing!!! Per Server/ Per Socket/ Per Core
Virtualization software is stable, and not "cutting" or "bleeding" edge technology.
Resources
Xen
Citrix
VMWare
VirtualBox
Virtual PC

[jaythrilla]

Best teacher on youtube! Not like these other guys that try to sound smart just to confuse people. Eli does it so we can truly understand thanks Eli

[ZFlyingVLover]

I don't understand how ANYONE can give this guy a thumbs down. He's the Khan academy of hardware and networking. Cheers

[khalidalkhuraiji]

The beauty of Eli is that his "ability to explain the technology and pass it to others in a very easy and understandable way" .

[MrPaintmeblue]

You are, by far the best teacher I have ever come across anywhere, online or in person of any IT topic. Man you probably don't even realize how big a service you are doing to folks like us who scour through reams of documents and large contents on the internet just to get a grasp of these topics. THANK YOU!!!

[TheRangeControl]

Eli, I will always be indebted to you.

Almost anytime that I have a system question, there you are with an Army styled point by point block of instruction on the subject.

Thank you for all of the digestible, yet comprehensive content.

[karimkrimou]

Almost 10 years and this course still one of the best courses out there on virtualisation.
You give me the will to switch to IT everytime I watch your videos.
Your way to teach things is amazing. You seek like a very nice guy

[sureshkhanal]

Eli,
I have watched a few of your video classes. They are simply great and great and you really have done a superb job, man! I have benefited tremendously from each of your video. Please do keep posting more of those videos. Thank you so much for putting out a genuine work on YouTube. Suresh, Ontario, Canada.

[benjpress]

This is why i love youtube. Who said education can't be free. Thank you for the Tutorial! Subbed, Fav'ed and Liked.

[AnthonyPA]

Eli, I've been working in the IT/communications field for over 20 years and I have to give you a really big "thumbs-up" on this video. I've learned all about VM's and all the animals it contains. You explain things very clearly, and in a very good pace. Kudos to you, keep up the great work!!

[aamirehsan]

the beautiful thing about eli is ---- bloody hell seems like he is reading my sleepy mind and he repeats and recap everything, which I pick up even if I have missed anything during his first intro ---- one of the best teacher I came across in my whole life

[dadgadfolkmusic]

I truly enjoy Eli's lessons.  He is great at explaining things in a simple way and he ties up information together beautifully, not to mention his indispensable repeat of vital information for the viewer to easily and quickly retain.  His delivery is smooth and his manners are charming.  Many thanks Eli!

[helcioandrade]

He goes directly to the point. That´s why I watch his tutorials videos. And his English is easily understandable. Thanks for helping us all.

[SiddharthSinghFiery]

Thank You so much Eli Sir. I am a fresher undergoing training in Cloud Computing in Capgemini. I always watch your videos before my assessments because you explain every topic crystal clear. You indeed are the best teacher on Youtube ! who follows the KISS principle..never bores.. and always helps me learn so much !

[njw]

Huge Fan man, i remember having your "Introduction to networking video" that really got me more into starting my IT career!
now I'm head of IT with knowledge in networking, Windows suit, Firewalls and getting into the cloud game and deploying OpenStack this month.
Thanks a lot!

[gregpavlik]

Well done, E! This helps me in my new IP Telephony sales job. You don't overwhelm, yet you don't leave any meat on the bones. Your approach is balanced. Thank you, Sir, it's much appreciated.

[lillywu]

Hi, Eli. Great thanks. Virtualization has confused me for a time. You, genius guy, make it easy to understand.

[nekkowe]

Wonderful, thank you so much :0
Most presentations, even lectures in real life, have zero redundancy and just blast through the material at incomprehensible pace.
With yours, it's like... listen to it, okay, got it in one, woah. I actually understand the concept instead of just learning to parrot the words to describe it.

[nevillekwa]

Level: Beginner
Presenter: Eli is very good instructor.  Presentation is very good.

[prashantkumar]

you won't get anything better than this on any Portal. Hats off to you sir.Thanks for your Videos its really good.

[oldschoolmusiclover]

Eli, as a fellow IT er   all of your training is some of the best I have seen! Easy to follow which is