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Principles of virtualization

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Basics of Virtualization:
What is Virtual and Virtualization?
Why do we need Virtualization?
Benefits of Virtualization.
Before and after Virtualization.
How Virtualization works?
Virtual Machines.
Types of Virtualization:
1. Server Virtualization
2. Storage virtualization
3. I/O virtualization
4. Network virtualization
5. Client virtualization
6. Desktop virtualization
7. Application Virtualization

Publié dans : Technologie
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Principles of virtualization

  1. 1. Basicsof Virtualizations Presented By: Rubal Sagwal (Unit-1)
  2. 2. Introduction[1] Now a days single most important issue in IT. Why? • Due to scarcity of resources. • To reduce power consumption. • To trim the buildings. • Less land requirement. • Provide high availability for critical applications. • Allow organization to respond faster in changing environment. 2
  3. 3. WhatisVirtual? Not physically existing as such but made by software to appear to do so. 3
  4. 4. Whatis Virtualization? 4
  5. 5. What isVirtualization? Virtualization is creation of replica – rather than actual – version of something. Such as Operating System, a Server, a Storage device or Network. Ex: Hard Drive partition. • It’s a process of creating virtual resources. • Mimicking things. • Single machine to act as many machine. • Emulation. 5
  6. 6. Why do we needVirtualization? Virtualization can increase IT quickness, flexibility and scalability while creating significant cost savings. Virtualization, To manage workload. • Increased performance. • Better utilization of resources. • Availability of resources. • Increased automation. • Save time. 6
  7. 7. Benefits ofVirtualization • Reduced capital and operating costs. • Minimized or eliminated interruption. • Increased IT productivity, efficiency, agility and responsiveness. • Faster provisioning of applications and resources. • Greater business continuity and disaster recovery. • Simplified data center management. • Availability of a true Software-Defined Data Center.. 7
  8. 8. Before andAfter Before Virtualization • There was a single OS image per machine. • The software and hardware remained to be tightly coupled. • The resources were not utilized optimally. • Inflexible and costly infrastructure. After Virtualization • Hardware-independence of operating system and applications. • Virtual machines can be provisioned to any framework. • Able to manage the OS and application as a single unit by encapsulating them into virtual machine. 8
  9. 9. HowVirtualizationWorks[2] 9
  10. 10. Virtual Machines (VMs)[1] Software + Hardware An abstraction of the computer hardware that allows a single machine to act as if there are many machines. • Without VMs: A single OS owns all hardware resources. • With VMs: Multiple OS, each running its own VMs, share hardware resource. • Virtualization enables multiple operating systems to run on the same physical platform. 10
  11. 11. Video 11
  12. 12. Typesof Virtualization[2] 1. Server Virtualization 2. Storage Virtualization 3. I/O Virtualization 4. Network Virtualization 12 5. Client Virtualization 6. Application Virtualization 7. Desktop Virtualization
  13. 13. 1. ServerVirtualization • Server Virtualization is the partitioning of a physical server into smaller virtual servers to help maximize your server resources. • In server virtualization the resources of the server itself are hidden, from users, and software is used to divide the physical server into multiple virtual environments, called virtual or private servers. 13
  14. 14. ServerVirtualization uses and Benefits • Common uses of Server Virtualization • Web servers. • Virtual Web servers is a popular way to provide low-cost Web hosting services. Instead of requiring a separate computer for each Web server, dozens of virtual servers can co-reside on the same computer. • Benefits of Server Virtualization • Independently reboot the system • Less space required. • Using a lower number of physical servers reduces hardware maintenance. 14
  15. 15. 2. I/OVirtualization • I/O virtualization technology allows a single physical adapter to be visualized as multiple virtual network interface cards (vNICs) and virtual host bus adapters(vHBAs). • Lower layer abstract upper Layer Protocol. 15
  16. 16. 3. StorageVirtualization • Storage Virtualization is the pooling of physical storage from multiple network storage devices into what appears to be a single storage device that is managed from a central support. • Storage virtualization is commonly used in storage area networks. 16
  17. 17. 4. NetworkVirtualization • Network Virtualization is a method of combining the available resources in a network by splitting up the available bandwidth into channels. • Each of which is independent from the others and can be assigned -- or reassigned -- to a particular server or device in real time.
  18. 18. 5. ClientVirtualization / DesktopVirtualization • Desktop Virtualization/ Client Virtualization is virtualizing a workstation load rather than a server. • Separate a computer desktop environment from the physical computer. • Provide remote access. • Multiple user/client using same application from remote locations. 18
  19. 19. 6. ApplicationVirtualization • Application Virtualization is abstracting the application layer away from the operating system. • Application can run in an encapsulated form without being depended upon on the operating system. • This can allow a Windows application to run on Linux and vice versa, in addition to adding a level of isolation. 19
  20. 20. References 1. https://software.intel.com/en-us/articles/the-advantages-of-using-virtualization-technology-in-the-enterprise 2. https://searchservervirtualization.techtarget.com/definition/virtualization 3. https://searchitchannel.techtarget.com/feature/Key-concepts-for-server-storage-and-client-virtualization 4. https://www.flackbox.com/server-virtualization-simplified-tutorial 20
  21. 21. ThankYou! 21