Vitualisation
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Virtualization is a framework that divides computer resources into execution environments. It abstracts physical hardware from the operating system to improve resource utilization and flexibility. Virtualization technologies enable multiple operating systems and applications to run simultaneously on a single physical server by simulating virtual machines. While not a new concept dating back to IBM in the 1960s, modern virtualization platforms like VMware vSphere transform hardware resources into fully functional virtual machines running their own operating systems. This improves efficiency, fault tolerance, and simplifies management and provisioning of computer systems.
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This document discusses cloud computing and virtualization technologies. It defines virtualization as splitting a physical computer into multiple virtual machines. Popular hypervisors like Xen and VMWare manage resources across virtual machines. Cloud computing provides on-demand access to shared computing resources over the Internet and is delivered through layers including SaaS, PaaS and IaaS. Virtualization underlies cloud computing by enabling the virtualization of servers, storage and networks as cloud resources.
Virtualization
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Virtualization is a technology that abstracts computer resources by transforming hardware into software. It allows multiple operating systems to run simultaneously on a single computer as virtual machines. There are different types of virtualization including full virtualization, paravirtualization, and hardware-assisted virtualization. Virtualization enables key aspects of cloud computing like scalability, availability, manageability, and performance by pooling and abstracting hardware resources and allowing virtual machines to be easily provisioned, migrated, and scaled.
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Virtualization allows multiple operating systems to run simultaneously on a single physical machine by presenting each virtual operating system with a virtualized hardware environment. This is achieved through a hypervisor or virtual machine monitor that creates virtual machines which the guest operating systems see as real computer hardware. Virtualization provides benefits like increased hardware utilization, flexibility, and portability. It allows organizations to reduce costs by consolidating servers and improving resource use.
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This document discusses virtualization and provides an overview of the key concepts. It defines virtualization as emulating hardware in software to partition a physical machine into multiple virtual machines. Some key points made include:
- Virtualization allows multiple operating systems and applications to run simultaneously on the same hardware.
- It provides benefits like server consolidation, easier development and testing, and enables cloud computing.
- There are different types of virtualization including hardware, desktop, software, memory, storage, network, and data virtualization.
- A virtual machine monitor partitions physical resources and manages the virtual machines. Popular virtualization software includes VirtualBox and Qemu.
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Virtualization allows multiple operating systems to run simultaneously on a single physical machine by presenting each virtual operating system with a virtualized hardware environment. This is achieved through a hypervisor or virtual machine monitor that creates virtual machines which the guest operating systems see as real computer hardware. Virtualization provides benefits like increased hardware utilization, flexibility, and portability. It allows organizations to reduce costs by consolidating servers and improving resource use.
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The process of virtualization enables the creation of virtual forms of servers, applications, networks and storage. The four main types of virtualization are network virtualization, storage virtualization, application virtualization and desktop virtualization.
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The document discusses virtualization and its benefits. Virtualization allows multiple operating systems to run concurrently on a single machine by using virtual machine technology. This leads to benefits like lower hardware costs, increased efficiency, easier management, isolation of applications, faster deployment, and testing flexibility. The document also discusses how virtualization solutions like Hyper-V in Windows Server 2008 R2 provide benefits such as high availability, improved management, increased performance, simplified networking, easier deployment through .vhd files, and security. It provides an example of how Warwickshire County Council saved £100,000 per year through virtualization.
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This document provides an overview of virtualization. It defines virtualization as separating a resource or request for a service from the underlying physical delivery of that service. Virtualization allows for more efficient utilization of IT infrastructure by running multiple virtual machines on a single physical server. There are two main approaches to virtualization - hosted architectures which run on top of an operating system, and hypervisor architectures which install directly on hardware for better performance and scalability. Virtualization can provide benefits like server consolidation, test environment optimization, and business continuity.
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This document discusses virtualization and provides an overview of the key concepts. It defines virtualization as emulating hardware in software to partition a physical machine into multiple virtual machines. Some key points made include:
- Virtualization allows multiple operating systems and applications to run simultaneously on the same hardware.
- It provides benefits like server consolidation, easier development and testing, and enables cloud computing.
- There are different types of virtualization including hardware, desktop, software, memory, storage, network, and data virtualization.
- A virtual machine monitor partitions physical resources and manages the virtual machines. Popular virtualization software includes VirtualBox and Qemu.
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This document discusses virtualization and provides information on different types of virtualization including hardware virtualization, desktop virtualization, and operating system virtualization. It describes virtual machines and how they operate based on the architecture and functions of real computers. Benefits of virtualization include conserving energy, improving ease of management, enabling testing and learning, reducing backup times, and maintaining legacy applications. Potential disadvantages include performance impacts if the server hosting virtual machines fails and demands for powerful hardware. The document also provides details about Oracle VM VirtualBox software.
Virtualization
Virtualization allows for the creation of virtual versions of hardware platforms, operating systems, storage, and network resources. It works by inserting a hypervisor or VMM between the virtual machines and physical hardware that provides an abstraction layer and efficiently multiplexes resources. There are two main types of virtual machines - system VMs that support multiple processes and share resources, and process VMs that emulate hardware for a single process. Virtualization is important for cloud computing because it allows clouds to offer flexible, on-demand resources and enables features like live migration, load balancing, and high availability. The main benefits of virtualization include instant provisioning, mobility, consolidation, high utilization, and improved hardware isolation and security.
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Virtual versions of servers, applications, networks and storage can be created through virtualization. Its main types include operating system virtualization (VMs), hardware virtualization, application-server virtualization, storage virtualization, network virtualization, administrative virtualization and application virtualization.
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The process of creating a virtual version of something be it an operating system, a storage device, a server or network resources is known as virtualization. With virtualization, enterprises and companies succeeded in integrating administrative tasks, enhancing scalability, managing workloads, and reducing operational complexities.
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The document discusses virtualization and its role in enabling cloud computing. It describes how virtualization abstracts physical computing resources into logical units, allowing single physical machines to appear as multiple virtual machines. This enables more efficient utilization of hardware resources. The document outlines different types of virtualization including server, network, storage and discusses how virtualization of CPU, memory and I/O allows virtual machines to run concurrently on a single physical host.
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The virtualization can be described in a generic way as a separation of the service request from the underlying physical delivery of that service. In computer virtualization, an additional layer called hypervisor is typically added between the hardware and the operating system. The hypervisor layer is responsible for both sharing of hardware resource and the enforcement of mandatory access control rules based on the available hardware resources.
There are three types of virtualization: full virtualization, para-virtualization and operating system level (OS-level) virtualization.
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2) Full virtualization using binary translation allows any x86 OS to run virtualized without modification but has more overhead than other techniques. Paravirtualization requires OS modifications to replace privileged instructions but has lower overhead. Hardware-assisted virtualization uses new CPU features to trap privileged instructions.
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Virtualization involves dividing the resources of a computer system into multiple execution environments. It works by inserting a thin virtualization layer that allows multiple operating systems to run concurrently on a single physical machine while sharing hardware resources. Virtualization provides significant benefits such as improved hardware utilization, simplified management, reduced costs, and improved fault tolerance.
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Virtualization allows for the creation of virtual versions of hardware platforms, operating systems, storage, and network resources. It works by inserting a hypervisor or VMM between the virtual machines and physical hardware that provides an abstraction layer and efficiently multiplexes resources. There are two main types of virtual machines - system VMs that support multiple processes and share resources, and process VMs that emulate hardware for a single process. Virtualization is important for cloud computing because it allows clouds to offer flexible, on-demand resources and enables features like live migration, load balancing, and high availability. The main benefits of virtualization include instant provisioning, mobility, consolidation, high utilization, and improved hardware isolation and security.
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The process of creating a virtual version of something be it an operating system, a storage device, a server or network resources is known as virtualization. With virtualization, enterprises and companies succeeded in integrating administrative tasks, enhancing scalability, managing workloads, and reducing operational complexities.
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The document discusses virtualization and its role in enabling cloud computing. It describes how virtualization abstracts physical computing resources into logical units, allowing single physical machines to appear as multiple virtual machines. This enables more efficient utilization of hardware resources. The document outlines different types of virtualization including server, network, storage and discusses how virtualization of CPU, memory and I/O allows virtual machines to run concurrently on a single physical host.
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This document discusses how virtualization allows you to turn one physical computer into multiple virtual machines. It defines virtualization as creating virtual versions of devices like servers or operating systems. Benefits include saving costs by consolidating servers, easier management, and increased backup capabilities. Virtualization is done through emulation or simulation and comes in types like hardware, software, memory, storage and network virtualization. It concludes that virtualization improves scalability, resource use, and centralizes administration tasks in an eco-friendly way.
Emerging Technology in the Cloud! Real Life Examples. Pol Mac Aonghusa
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Linux virtualization
The virtualization can be described in a generic way as a separation of the service request from the underlying physical delivery of that service. In computer virtualization, an additional layer called hypervisor is typically added between the hardware and the operating system. The hypervisor layer is responsible for both sharing of hardware resource and the enforcement of mandatory access control rules based on the available hardware resources.
There are three types of virtualization: full virtualization, para-virtualization and operating system level (OS-level) virtualization.
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A virtual machine is a software program that behaves like a separate computer and can run applications and programs. It is created within a host computing environment and is known as a guest. There are two types of virtual machines: system virtual machines, also called hardware virtual machines, which allow the sharing of physical machine resources between multiple virtual machines each running its own OS; and process virtual machines, also called application virtual machines, which run as a normal application and support a single process. Virtual machines provide advantages like familiar interfaces, isolation, high availability, and cost reduction, but have disadvantages like indirect hardware access and requiring more RAM and disk capacity. Common examples of virtual machines include XEN, VirtualBox, VMware Workstation, and Citrix
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1) The document discusses three main techniques for virtualizing the x86 CPU: full virtualization using binary translation, OS-assisted virtualization (paravirtualization), and hardware-assisted virtualization.
2) Full virtualization using binary translation allows any x86 OS to run virtualized without modification but has more overhead than other techniques. Paravirtualization requires OS modifications to replace privileged instructions but has lower overhead. Hardware-assisted virtualization uses new CPU features to trap privileged instructions.
3) Each technique has strengths and weaknesses in terms of performance, compatibility, and maintenance requirements. Currently, binary translation performs best overall but hardware assistance will improve over time. VMware uses multiple techniques to deliver the best balance of
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The document compares and contrasts virtualization and cloud computing approaches. Virtualization focuses on server consolidation and resource optimization, with applications designed to scale vertically. The cloud takes a holistic automation approach, with applications built to elastically scale horizontally across commodity hardware. Stateful applications are better suited to virtualization where servers are static, while stateless applications are more suited to the cloud where servers can be dynamically created and deleted.
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Emerging Technology in the Cloud! Real Life Examples. Pol Mac Aonghusa
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Virtualization technology and an application of building vm ware
Virtualization technology and an application of building vm ware
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Virtualization involves dividing the resources of a computer system into multiple execution environments. It works by inserting a thin virtualization layer that allows multiple operating systems to run concurrently on a single physical machine while sharing hardware resources. Virtualization provides significant benefits such as improved hardware utilization, simplified management, reduced costs, and improved fault tolerance.
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Virtualization allows a single physical machine to run multiple virtual machines, making hardware resources available to multiple virtual operating systems. This is done through a hypervisor or virtual machine monitor that allocates physical resources to virtual machines. Virtualization provides benefits like reduced costs, increased hardware utilization, and isolation of environments while sharing resources. The main types of virtualization are execution level (using a hypervisor), operating system level (through time-sharing), programming level (through virtual machines like Java), application level, storage, and network.
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2. OS virtualization works at the OS layer, virtualizing a physical server and OS into isolated partitions that function like separate servers.
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4. Paravirtualization coordinates hardware access without fully emulating
Virtualisation with v mware
Virtualization provides abstraction between hardware and software. It allows multiple virtual machines to run on a single physical machine, sharing resources. There are two approaches - hosted virtualization runs on a standard OS, while hypervisor architecture installs directly on hardware for better efficiency. VMware offers virtualization software for data centers, desktops, and mobile devices to optimize resource use across hardware, storage, and networks. Standards like OVF and VMDK help define virtual machine packaging and disk formats.
APznzaamT18LaGRvfDd3vc6XGHHoq2hlFqHYsO9vYeEQXTa-sAm9oMvLFaeBQkqdEEa1z4UJVAboW...
This document discusses various types of virtualization technologies. It begins by describing characteristics of virtualized environments such as sharing, aggregation, emulation, and isolation. It then discusses different virtualization techniques including hardware-assisted virtualization, full virtualization, paravirtualization, operating system-level virtualization, programming language-level virtualization, and application-level virtualization. For each technique, it provides examples and discusses advantages and performance implications. It also includes diagrams illustrating the virtualization reference model and taxonomy of virtualization techniques.
virtualizationcloudcomputing-140813101008-phpapp02.pdf
Virtualization allows multiple operating systems to run on a single machine by creating virtual versions of hardware resources. There are three main types of virtualization: partial, full, and para. A hypervisor manages virtual machines and allocates resources to guest operating systems. Cloud computing delivers computing as an on-demand utility over the internet by sharing resources. It provides software, platforms and infrastructure as services across public, private, hybrid and community clouds. Big data refers to massive volumes of structured and unstructured data that is difficult to process using traditional methods and requires specialized technologies.
virtualization.pptx
Virtualization is a process that uses software to create virtual versions of computer hardware resources like processors, memory, and storage. This allows a single physical machine to run multiple virtual machines, with each VM running its own operating system like an independent computer. Key benefits of virtualization include more efficient hardware utilization, reduced costs, and easier management of infrastructure. There are various types of virtualization including desktop, network, storage, application, and more. A hypervisor is software that creates and runs virtual machines, allowing a host computer to share its resources among multiple guest VMs.
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Server Virtualization Architecture and Implementation
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The document discusses several topics related to multivariable process control including:
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- Transfer functions are used to identify relationships between inputs and outputs of a system.
- Interactions occur when the impact of a risk factor depends on a third variable.
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- Decouplers can be used to ensure partial or full decoupling in a multivariable system.
Pe,ppt
Regenerative braking works by converting the kinetic energy of a moving vehicle or object into electrical energy when slowing or stopping. This electrical energy can either be used immediately or stored for later use. Specifically, regenerative braking in a DC motor involves changing the thyristor connections so that the motor operates as a generator when rotating under inertia, returning the generated electrical energy back to the power source through diode rectification. This saves energy that would otherwise be wasted through conventional braking methods.
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Environmental
There are several major types of pollution that can harm the environment and human health. Air pollution is released directly into the atmosphere from burning fossil fuels and causes issues like acid rain and health problems. Soil pollution results from industrial waste and activities like mining contaminating the ground. Water pollution involves hazardous materials polluting oceans, lakes, and rivers from industry and other sources. Noise pollution is caused by loud vehicles, machines, and music negatively impacting human hearing. Various methods can be used to control and reduce pollution through practices like recycling, reducing waste, and using pollution treatment devices.
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Seminar ppt...; )
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Vitualisation
- 2. Virtualization is a framework or methodology of dividing the resources of a computer into multiple execution environments. It can also be explicate as an abstraction layer that decouples the physical hardware from the operating system to deliver greater IT resource utilization & flexibility”.
- 3. It is done by applying one or more concepts or technologies such as: Time-sharing, Partial or complete machine simulation, Hardware & software partitioning, Emulation, Quality of service, And many others. . .
- 4. Virtualization technology enables multiple operating systems and application ‘images’ to share a single physical server. A virtual server, or what is commonly known as a ‘virtual machine’, simulates the operations of your servers. This enables an application to run on a machine as it would on a physical server.
- 5. Its NOT A NEW CONCEPT 1960’s at IBM: M44/44X Project - the goal of which was being to evaluate the then emerging time sharing system concepts. The architecture was based on virtual machines: The main machine was an IBM 7044(M44) and each virtual machine was an experimental image of the main machine(44X). IBM & MIT headed research through the years & eventually developed the idea of a virtual Machine Monitor(VMM).
- 6. The VMware virtualization platform is built on a BUSINESS- READY ARCHITECTURE. Use software such as VMware vSphere to transform or “virtualized” the hardware resources of an x86-based computer— including the CPU, RAM, hard disk and network controller—to create a fully functional VIRTUAL MACHINE that can run its own operating system and applications just like a “real” computer. Each virtual machine contains a complete system, eliminating potential conflicts. It works by inserting a thin layer of software directly on the computer hardware or on a host operating system.
- 7. This contains a virtual machine monitor or “hypervisor” that allocates hardware resources dynamically and transparently. Multiple operating systems run concurrently on a single physical computer and share hardware resources with each other. By encapsulating an entire machine, including CPU, memory, operating system, and network devices, a virtual machine is completely compatible with all standard x86 operating systems, applications, and device drivers. We can safely run several operating systems and applications at the same time on a single computer, with each having access to the resources it needs when it needs them.
- 8. x86 privilege level architecture without virtualization The binary translation approach to x86 virtualization The Paravirtualization approach to x86 Virtualization The hardware assist approach to x86 virtualization
- 10. Device and I/O virtualization
- 11. Modern computer systems are composed of various hardware & software layers. Virtualization inserts a software layer(VMM) at different points in this architecture, comes in three variants: Hardware-level virtualization, Operating system-level, High-level language virtual machines.
- 12. Virtualization layer sits right on top of the real hardware. Since the VM presents a version the real machine, all software written for that hardware(x86) will run on that virtual machine. Original design from IBM in the 1960’s
- 13. Virtualization layer sit between the operating system and the application programs that run on the operating system Virtual Machine runs applications, or sets of applications written for the operating system but in a controlled environment use host OS API FreeBSD jails act like this.
- 14. The virtualization layer sits as an application program on top of the operating system Can run any programs written for that virtual machine abstraction regardless of the operating system hosting that virtual machine Real Machine OS JVM Java Byte Code Applications
- 15. It enables us to get the most out of our server hardware. It will allow us to set up redundant servers for better fault tolerance. Management is simplified. We can partition applications on separate OSes for greater reliability. Provisioning new servers for prototyping, testing and migration is simplified. We can save energy. Virtual Desktop Infrastructure can save us a fortune on PCs
- 16. SimOS Microsoft Virtual Server Mac-on-Linux Linux-VServer OpenVZ Microsoft Virtual PC
- 17. Hardware companies have taken notice of virtualizations growing popularity and advantages Intel (called Virtualization Technology or VT-X Vander pool) and AMD (Pacifica) are releasing processors that have built in software virtualization support that try to eliminate emulation costs This support will allow Xen to support unmodified unprivileged OS’s (hello Windows support)
- 18. Many organizations across Australia are starting to take advantage of server virtualization to reduce power, cooling and equipment costs, reduce server administration and downtime, and gain a higher level of server redundancy.