basics of virtualizatiion

1. “ Turn one computer into several using virtualization”
Presented by
Sathish b
CSE(2/4)
KITS, Warangal

2. Contents…
1. What is virtualization?
2. Why virtualization?
3. How virtualization is done?
4. Types of virtualization.
5. History.
6. Pros.
7. Cons.

3. What is virtualization?
 Create a virtual version of a device or resource, such
as a server, storage device, network or even an
operating system
 Framework of dividing the resources of a computer
into multiple execution environments.

4. Why virtualization?
 Virtualization lets you run multiple virtual servers
or desktops on a single physical machine (host).
 Save on physical machine costs.
 Centralized and Remote Management Servers that reside
on the same physical machine are easier to manage.
 Increased Backup Capability

5. How virtualization is
done?
 A virtualization framework may make use of emulation
or simulation, perhaps because the guest and host
architectures are different, or even otherwise.
 An emulator reproduces the behaviour of one
system on another.
 A simulation is an imitation of some real system.

6. Types of virtualization.
 Hardware Virtualization
 Software Virtualization
 Memory Virtualization
 Storage Virtualization
 Data Virtualization
 Network Virtualization

7. Hardware Virtualization.
Hardware virtualization is accomplished by abstracting the
physical hardware layer by use of a Virtual machine
monitor.
Various levels of hardware virtualization exist that perform
various levels of abstraction.

8. Software Virtualization
It is able to abstract the software installation procedure and
create virtual software installations.
This methodology provides some fairly significant
benefits to application managers

9. Memory Virtualization
 It is seen as virtual memory, or swap, on servers and
workstations.
 Remote Direct Memory Access (RDMA) is used to
provide remote access to another host's memory
without interfering with that host

10. Storage Virtualization
 Storage virtualization is a major component in storage
best practices for servers, in the form of controllers
and functional RAID levels.
Storage virtualization is becoming more and more
present in various other forms.

11. Data Virtualization
Data exists in many forms in our environments.
 Data virtualization deals with the ability to abstract
the actual location, access method and data types,
and allow the end user to focus on the data itself.

12. Network Virtualization
Virtualization can be seen as abstraction and creation
of multiple logical systems on a single physical platform.
Networking devices utilize both para virtualization and
hypervisor techniques.

13. History.
 The use of multi-programming for spooling can be
ascribed to the Atlas computer in the early 1960s.
In the mid 1960s, the IBM Watson Research Centre was
home to the M44/44X Project, the goal being to evaluate
the emerging time sharing system concepts

14. Pros of virtualization.
virtualization is the fact that it provides high availability for
critical applications, and streamlines application deployment
and migrations.
The collections of inefficient servers can be replaced with
fewer machines.
software can be tested while isolated in harmless virtual
partitions

15. Cons of virtualization.
When the machine, on which all the virtualized solutions
run, fails or when the virtualization solution itself fails, this
crashes everything.
lower performance

16. time to conclude!!!
Virtualization overall, irrespective of the type, helps
improve scalability and resource utilization.
Virtualization helps to centralize administrative tasks.
Eco friendly.

18. Visit me at: memywld.blogspot.in
like at: facebook.com/wearedevelopers