Virtualization
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Virtualization allows multiple virtual machines to run on a single physical machine. It started with mainframe virtualization in the 1960s and expanded to x86 servers with VMware in the late 1990s. Virtualization provides hardware isolation, compatibility, and independence. Virtual machines can be moved and managed as a flexible virtual infrastructure. Cloud computing takes this a step further by providing on-demand, self-service access to virtual resources over the internet.
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Virtual machines allow multiple operating systems to run simultaneously on the same physical hardware through virtualization. A hypervisor manages access to physical resources and allocates what each virtual machine needs, providing isolation. This allows different operating systems, applications, and workloads to be securely isolated while sharing the same underlying hardware resources.
Virtual machine
This document provides an overview of virtual machines. It defines a virtual machine as a software implementation of a machine that executes programs like physical hardware. There are two main types: system virtual machines which provide a complete OS environment, and process virtual machines which provide a platform-independent programming environment. Popular virtual machine software discussed includes VMware Workstation, Xen, VirtualBox, and Citrix. VMware Workstation allows multiple operating systems to run simultaneously on a single PC without restarting. Xen is an open-source virtual machine monitor that allows multiple guest operating systems to run concurrently on the same hardware. It has a three-layer architecture consisting of a virtual machine layer, hypervisor layer, and hardware/physical layer.
Virtual machine
This document discusses the installation of virtual machines. It begins with an introduction to virtual machines, noting that they allow software to emulate hardware and isolate operating systems. It then covers the need for virtual machines, including isolation, testing capabilities, snapshots, and replication. Finally, it discusses advantages like running multiple operating systems simultaneously, easy maintenance and recovery, before concluding that virtual machines provide discrete identical execution environments with greater isolation than a single operating system.
Virtualization, A Concept Implementation of Cloud
This presentation will guide through deploying virtualization in linux environment and get its access to another machine followed by virtualization concept.
Virtualization
Virtualization allows computer resources to be abstracted and shared. It involves simulating hardware to run virtual machines that behave like physical computers. A hypervisor manages virtual machines and allocates resources to them. Virtualization provides benefits like efficient resource use, increased availability, disaster recovery, and on-demand scaling. While it adds complexity, virtualization is commonly used to virtualize desktops, run specific programs, create test environments, design private clouds, and utilize public clouds. Major vendors provide virtualization software and cloud services.
virtualization-220403085202_Chapter1.pptx
Virtualization allows multiple operating systems and applications to run simultaneously on a single physical machine. It provides benefits such as running different operating systems, easier software installation through virtual appliances, testing and disaster recovery using snapshots, and infrastructure consolidation to reduce hardware costs. Virtualization works by allocating resources like memory, processing power, and storage to virtual machines through a hypervisor. Early virtualization technologies date back to the 1960s but it became widely adopted in the 2000s with advances in hypervisor software.
Virtualization-the Cloud Enabler by INSPIRE-groups
Virtualization is the ability to run virtual machines on top of a hypervisor.
Virtualization is an emerging IT paradigm that separates computing functions and technology implementations from physical hardware.
Cloud computing, for example, is the virtualization of computer programs through an internet connection rather than installing applications on every office computer.
VMware Virtualization
VMware virtualization allows multiple operating systems and applications to run simultaneously on a single server, improving hardware utilization. It partitions system resources between virtual machines, providing fault and security isolation. Virtual machines can be easily moved between physical servers using VMotion without downtime. Virtualization reduces costs by consolidating servers and enables high availability through automatic restart of virtual machines in the event of server failure.
Cloud Computing using virtulization
Cloud computing allows users to access shared computing resources over the internet. It utilizes virtualization which involves partitioning physical resources and allocating them to virtual machines. This improves resource utilization, enables multi-tenancy, and makes resources scalable and flexible. Virtualization allows multiple operating systems and applications to run concurrently on a single physical server through virtual machines. It provides benefits like hardware independence, migration of virtual machines, and better fault isolation. Security challenges in virtualized cloud environments include issues around scaling, diversity, identity management and sensitive data lifetime.
Chap 2 virtulizatin
This Chapter will teach you what is virtualization and the concept of virtualization, Virtual machine its benefit and real time use, understanding Hypervisors (virtual machine monitor)
Virtualization for Cloud Computing
Easily confused with cloud-computing, virtualization is actually the software that powers cloud computing. VMware separates physical infrastructures and turns them into dedicated resources. It also allows multiple OS to run on the same server simultaneously. The purpose of virtualization is to reduce the cost of acquiring and maintaining multiple physical resources.
Introductin to virtualization i
Virtualization allows multiple operating systems to run simultaneously on a single computer through virtual machines. It provides benefits like consolidation, redundancy, segregation, supporting legacy hardware, and migration. Consolidation allows combining several physical servers into one server running multiple virtual environments, saving on costs, space, energy, and reducing environmental impact. Redundancy allows running the same application on multiple virtual servers for continuity if one fails. Segregation provides isolated environments for testing without impacting other applications. Virtualization supports running legacy hardware systems on modern servers. Migration allows moving virtual servers between physical machines.
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In this presentation, I describe the basics of virtualization, what major players has done so far, what we can do today with available tools.
Virtualization&cloud computing
This document defines virtualization and cloud computing. Virtualization refers to creating virtual versions of hardware and resources that allow multiple operating systems to run on a single physical system by sharing underlying hardware. A hypervisor manages virtual machines (VMs), which are isolated runtime environments. Cloud computing delivers hosted services over the internet, providing on-demand access to resources that can be rapidly provisioned. It offers software, platform, and infrastructure services. Virtualization is an element of cloud computing that allows for efficient sharing of computing resources.
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Virtualization
- 2. Timeline • Mid 1960s – Virtualization of Mainframes by IBM • 1980s & 1990s –x86 computers dominated. • This resulted in widespread domination of one application server architecture. • However, this became increasingly wasteful as power continued to grow by leaps and bounds. • 1998- VMware Begins.
- 3. Timeline… • First Patent “System & Method for Virtualization computer Systems.” • 1999 – VMware Workstation Launched. • Now, it was possible to run multiple machines on single x86 workstation. • Today – Virtualization has come far from just being a tool.
- 4. How does it work?? • This is an isolated software container. • It works exactly like a physical workstation. VMware OR Operating System Machine
- 5. Advantages!!!! Encapsulation Isolation Compatibility Hardware Independence
- 6. Advantages… • Each Virtual machine remains completely isolated from each other ; one crash does not affect other virtual machine. • Completely compatible with all standard x86 platform. • No Modification Required. • Free to run whatever OS & application you’d like inside that VM without concern for its neighbor VMs or physical host. You could move the entire VM onto another host with all drivers intact.
- 7. Virtual Infrastructure • Encapsulated, Hardware independent VM are building blocks that form a part of a much larger solution offered by VMware . • THIS IS VIRTUAL INFRASTRUCTURE!!!! • Provides Flexibility, Savings & Greater Satisfaction to internal customers, IT Organizations.
- 10. WHAT IS CLOUD???? • It is not just a virtualized infrastructure or a network. • It is a virtualized environment that has been developed to SELF-SERVICE. • This means NO ENDLESS MEETINGS, NO WAIT TIME, SELF-SERVICE, CONTROL, MANAGEABILITY. • YOU GO FOR IT AND YOU GET IT.
- 14. Types Of Cloud • Private • Public • Hybrid • Private cloud is hosted by an organization producing all hardware and software for cloud. • Public cloud have a 3rd party provider running its data center but organization has complete control over the machine. • Hybrid is a combination of the two.(Most Effective)
- 15. Cloud Services • IaaS – Infrastructure as a Service Resource pool through a Catalog, No human error or security loophole. • PaaS – Platform as a Service • SaaS – Software as a Service, like Google Docs, Amazon.
- 16. Cloud Computing An approach to computing that leverages the efficient pooling of on-demand, self managed virtual infrastructure, consumed as a service. • Controlled by IT. • Yet entirely ON-Demand.