Virtualization
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31 мая 2014 года, для улучшении качество образовании и вдохновении студентов школы МаСуД, было организованно мастер-класс с участием сертифицированного специалиста международного уровня по программе Linux Professional Institute Сухроба Монфарида на тему "Виртуализация серверов". Сухроб рассказал студентам МаСуДа, какие преимущества в использовании виртуальных серверов для управления бизнесом или нескольким проектом одновременно.
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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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1. Server virtualization involves dividing the resources of a physical server, such as CPU, memory and storage, into multiple isolated virtual machines to run multiple operating systems and applications.
2. Early virtualization technology from the 1960s allowed identical "copies" of hardware to run on IBM mainframes, enabling time-sharing of computing resources.
3. Modern server virtualization provides increased hardware utilization, consolidation of servers, mobility of workloads, business continuity, and simplified development/testing environments.
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In a general sense, virtualization, is the creation of a virtual, rather than an actual, version of something.
For example:
Google Earth, It is a virtual image of Earth which hold every detail about earth.
From a computing perspective, we might have already done some virtualization if you’ve ever partitioned a hard disk drive into more than one “virtual” drive.
Virtualization in a computing environment can be present in many different forms, some of which are:
Hardware virtualization
Storage and data virtualization
Software virtualization
Network virtualization
Platform Virtualization
Platform virtualization allows you to create virtual machines that behave like physical computers, enabling you to install multiple operating systems and programs on a single machine at once. It uses hypervisor software to emulate hardware and allocate resources to guest systems, while the actual hardware resources belong to the host system. Popular virtualization platforms include Xen, Microsoft Virtual PC, Qemu, VirtualBox, and VMWare, and virtualization provides benefits like safe testing of new software and running multiple systems simultaneously on a single server.
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Virtualization has its origins in mainframe computing from the 1960s. It allows a single physical server to run multiple virtual machines, each with its own operating system and applications. This addresses challenges from the 1990s and 2000s as companies had many single-purpose physical servers with low utilization rates, high costs, and management complexity. Virtualization software introduces a hypervisor layer that partitions resources and isolates virtual machines so multiple operating systems can run independently on the same physical hardware. Today virtualization delivers benefits like server consolidation, high availability, disaster recovery, and rapid provisioning to improve efficiency and reduce costs.
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2. They must be designed to gracefully handle frequent component failures due to their large scale.
3. Building and operating such large computing platforms is very expensive, so cost efficiency across hardware, software, energy usage, and other factors is important to consider.
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What is Virtualization
Virtualization is a technique that separates a service from the underlying physical hardware. It allows multiple operating systems to run simultaneously on a single computer by decoupling the software from the hardware. There are two main approaches - hosted virtualization runs atop an operating system, while hypervisor-based virtualization installs directly on the hardware for better performance and scalability. A virtualization layer called a VMM manages and partitions CPU, memory, and I/O access for the guest operating systems. Virtualization overcomes the challenge that x86 operating systems assume sole ownership of the hardware through techniques like binary translation, para-virtualization with OS assistance, or newer hardware-assisted virtualization.
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Server virtualization allows multiple virtual servers to run on a single physical server by dividing the physical resources of the server. There are three main approaches to server virtualization: virtual machine models use a hypervisor to run virtual machines; paravirtual machine models modify the guest OS code; and operating system-level virtualization exports OS functionality without a hypervisor. Server virtualization provides benefits like reduced costs, improved resource utilization, increased availability, and easier disaster recovery. The future of virtualization involves the continued evolution of operating systems to support new forms of multitenancy.
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.
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- Virtualization allows multiple operating systems to run concurrently on a single physical machine by presenting each virtual operating system with a virtual hardware environment. A hypervisor manages access to the physical hardware resources and isolates the virtual machines.
- Cloud computing extends virtualization by allowing virtual servers and other resources to be dynamically provisioned on demand from large shared computing infrastructure. This improves flexibility and allows users to pay only for resources that are consumed.
- The hypervisor software manages the virtual machines and allocates physical resources to each one while isolating them from each other. Example hypervisors include VMware, Xen, and KVM. Virtualization improves hardware utilization and makes infrastructure more flexible and cost-effective.
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Virtualization allows for the creation of virtual versions of hardware platforms, operating systems, storage and network resources through software. It works by imitating hardware resources through a hypervisor software layer that creates virtual machines with virtual hardware. This allows multiple guest operating systems to run in isolation on a single physical machine. Virtualization provides benefits like reduced costs, increased hardware utilization, easier management and testing across different operating systems. Popular virtualization platforms include VMWare, Hyper-V, KVM, Xen and VirtualBox.
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Virtualization allows for the creation of virtual devices and resources such as servers, operating systems, and networks. There are different types of virtualization including server, application, presentation, network, and storage virtualization. Virtualization provides benefits such as increased efficiency and productivity, better management of resources, and more secure centralized data storage. It allows companies to cut costs and data centers to operate more efficiently using less hardware and energy. While virtualization manipulates hardware, cloud computing delivers shared computing resources and services based on that virtualization.
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Virtualization originated from mainframe technology in the 1960s where mainframe computers were split into multiple virtual machines to run tasks independently. In the 1990s and 2000s, companies ran one application per physical server leading to inefficient utilization and high costs. Virtualization software allows multiple virtual machines to run on a single physical server, improving utilization and reducing costs while maintaining isolation between virtual machines. Virtualization provides benefits like reduced capital and operational expenses, high availability, rapid provisioning, and server consolidation.
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Throughput oriented aarchitectures
Throughput oriented architectures emphasize maximizing overall throughput by utilizing many simple processing cores, extensive hardware multithreading, and SIMD execution. GPUs are exemplars of throughput oriented designs, containing thousands of smaller cores to handle multiple tasks concurrently compared to CPUs which comprise a few larger cores for serial processing. Programming for throughput oriented processors requires more focus on parallelism and scalability than latency-optimized sequential CPUs.
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Virtualization is the "creation of a virtual (rather than actual) version of something, such as a server, a desktop, a storage device, an operating system or network resources".
In other words, Virtualization is a technique, which allows to share a single physical instance of a resource or an application among multiple customers and organizations. It does by assigning a logical name to a physical storage and providing a pointer to that physical resource when demanded.
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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.
Introduction to virtualisation
1. Server virtualization involves dividing the resources of a physical server, such as CPU, memory and storage, into multiple isolated virtual machines to run multiple operating systems and applications.
2. Early virtualization technology from the 1960s allowed identical "copies" of hardware to run on IBM mainframes, enabling time-sharing of computing resources.
3. Modern server virtualization provides increased hardware utilization, consolidation of servers, mobility of workloads, business continuity, and simplified development/testing environments.
Virtualization
In a general sense, virtualization, is the creation of a virtual, rather than an actual, version of something.
For example:
Google Earth, It is a virtual image of Earth which hold every detail about earth.
From a computing perspective, we might have already done some virtualization if you’ve ever partitioned a hard disk drive into more than one “virtual” drive.
Virtualization in a computing environment can be present in many different forms, some of which are:
Hardware virtualization
Storage and data virtualization
Software virtualization
Network virtualization
Platform Virtualization
Platform virtualization allows you to create virtual machines that behave like physical computers, enabling you to install multiple operating systems and programs on a single machine at once. It uses hypervisor software to emulate hardware and allocate resources to guest systems, while the actual hardware resources belong to the host system. Popular virtualization platforms include Xen, Microsoft Virtual PC, Qemu, VirtualBox, and VMWare, and virtualization provides benefits like safe testing of new software and running multiple systems simultaneously on a single server.
Virtualisation basics
Virtualization has its origins in mainframe computing from the 1960s. It allows a single physical server to run multiple virtual machines, each with its own operating system and applications. This addresses challenges from the 1990s and 2000s as companies had many single-purpose physical servers with low utilization rates, high costs, and management complexity. Virtualization software introduces a hypervisor layer that partitions resources and isolates virtual machines so multiple operating systems can run independently on the same physical hardware. Today virtualization delivers benefits like server consolidation, high availability, disaster recovery, and rapid provisioning to improve efficiency and reduce costs.
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The document discusses the datacenter as a computer or warehouse-scale computer (WSC). Key points:
1. WSCs run large Internet services/applications across thousands of servers rather than single machines.
2. They must be designed to gracefully handle frequent component failures due to their large scale.
3. Building and operating such large computing platforms is very expensive, so cost efficiency across hardware, software, energy usage, and other factors is important to consider.
Virtualization technology and an application of building vm ware
This document discusses various types of virtualization including hardware virtualization, OS virtualization, and desktop virtualization. It provides examples of virtualization software including VMware, QEMU, and Microsoft Virtual PC. VMware is highlighted as the industry leader with products like ESX that run as hypervisors on hardware. The document also performs a SWOT analysis of virtualization, noting strengths like adaptability and live migration, weaknesses like cost, and threats like security breaches and new competition.
What is Virtualization
Virtualization is a technique that separates a service from the underlying physical hardware. It allows multiple operating systems to run simultaneously on a single computer by decoupling the software from the hardware. There are two main approaches - hosted virtualization runs atop an operating system, while hypervisor-based virtualization installs directly on the hardware for better performance and scalability. A virtualization layer called a VMM manages and partitions CPU, memory, and I/O access for the guest operating systems. Virtualization overcomes the challenge that x86 operating systems assume sole ownership of the hardware through techniques like binary translation, para-virtualization with OS assistance, or newer hardware-assisted virtualization.
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Server virtualization allows multiple virtual servers to run on a single physical server by dividing the physical resources of the server. There are three main approaches to server virtualization: virtual machine models use a hypervisor to run virtual machines; paravirtual machine models modify the guest OS code; and operating system-level virtualization exports OS functionality without a hypervisor. Server virtualization provides benefits like reduced costs, improved resource utilization, increased availability, and easier disaster recovery. The future of virtualization involves the continued evolution of operating systems to support new forms of multitenancy.
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.
Virtualization: Force driving cloud computing
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.
Cloud Computing: Virtualization
- Virtualization allows multiple operating systems to run concurrently on a single physical machine by presenting each virtual operating system with a virtual hardware environment. A hypervisor manages access to the physical hardware resources and isolates the virtual machines.
- Cloud computing extends virtualization by allowing virtual servers and other resources to be dynamically provisioned on demand from large shared computing infrastructure. This improves flexibility and allows users to pay only for resources that are consumed.
- The hypervisor software manages the virtual machines and allocates physical resources to each one while isolating them from each other. Example hypervisors include VMware, Xen, and KVM. Virtualization improves hardware utilization and makes infrastructure more flexible and cost-effective.
Different types of virtualisation
This document discusses different types of virtualization technologies. It begins by defining virtualization and describing its benefits such as standardization, rationalization, and improved efficiency. It then categorizes various virtualization types including server/platform, desktop, software, system resources, data, and network virtualization. For each type, it provides details on sub-types and discusses opportunities and challenges. The document aims to help consultants, administrators and decision makers understand and evaluate different virtualization options for their organizations.
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One can Study the key concept of Virtualization, its types, why Virtualization and what are the use cases and Benefits of Virtualization and example of Virtualization.
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Virtualization uses software to divide the hardware resources of a single computer into multiple virtual machines, each capable of running its own operating system. This allows more efficient use of physical resources and greater flexibility. Key benefits include improved resource utilization, easier management of operating systems and applications, reduced downtime, faster provisioning of resources, and lower costs. Virtualization is a core technology enabling cloud computing.
Lecture5 virtualization
Virtualization allows multiple operating systems and applications to run on a single hardware device by dividing the resources virtually. It provides isolation, encapsulation, and interposition. There are two types of hypervisors - Type 1 runs directly on hardware and Type 2 runs on an operating system. Virtualization can be applied to servers, desktops, applications, networks, and storage to improve utilization, security, and manageability.
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Virtualization allows multiple operating systems and applications to run on a single hardware device by dividing the resources virtually. There are two types of hypervisors - Type 1 runs directly on hardware and Type 2 runs on an existing operating system. Virtualization can be applied to servers, desktops, applications, networks, and storage to improve utilization, security, and manageability.
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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 & cloud computing
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 techniques and requires specialized infrastructure.
Adaptive Computing Using PlateSpin Orchestrate
Adaptive computing goes beyond just intelligently utilizing available resources; it encompasses quality of service (QoS) targets, fault tolerance (high availability), monitoring, and iterative analysis of the resulting dataset to determine what corrective measures (adaptations) should occur at any given moment. As virtualization becomes widespread in the data center, the need for automating the placement and configuration of workloads (virtual machines) using an adaptive computing model becomes vitally important. This session demonstrates how to use events, introduced in PlateSpin Orchestrate 2.0.2, to create rules that trigger workload provisioning, migration, and other virtual machine lifecycle operations. It will also offer a preview of new functionality included in the upcoming 2.1 release of the product.
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.
Virtualization
The document provides an overview of virtualization, including definitions, types of virtualization, and popular hypervisors. It discusses how virtualization addresses issues with underutilized servers in data centers by consolidating workloads. Full virtualization provides a complete hardware simulation but has challenges virtualizing certain architectures like x86. Paravirtualization modifies the guest OS, while hardware-assisted virtualization uses new CPU features to simplify virtualization. Memory, storage, network, and application virtualization are also summarized.
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Virtualization
- 1. Virtualization Sohrab Monfared Linux Professional Institute Certified IT Administrator, Security Consultant, Instructor @CentreICT
- 2. What is it? ● At its simplest level, virtualization allows you, virtually and cost-effectively, to have two or more virtual computing environments, running different operating systems and applications on one piece of hardware. ● Virtualization is also designed to enable a generation of more energy-efficient computing.
- 3. What Does Virtualization Deliver? ● Consolidate workloads to reduce hardware, power, and space requirements. ● Run multiple operating systems simultaneously as an enterprise upgrade path, or to leverage the advantages of specific operating systems, or for whatever reason you can imagine.
- 4. What Does Virtualization Deliver? ● Run legacy software on newer, more reliable, and more power-efficient hardware. ● Dynamically migrate workloads to provide fault tolerance. ● Provide redundancy to support disaster recovery.
- 5. Why Virtualization ? ● Reduce the Total Cost of Ownership (TCO). ● Lowering the Operating Expenses (OPEX), such as energy costs. ● Save on capital expenditures for new server equipment. ● Provision new systems faster by building standard server operating system images.
- 6. Consolidation: A real-world example ● Replacing 100 Sun Fire V880 systems running Oracle Solaris 8 with 17 Sun SPARC Enterprise T5240s systems running Oracle Solaris 10: – Reduced space: 100 V880s require 50 data center racks, whereas 17 T5240s can fit in a single rack. – Approximately 660,000 BTUs of heat generation would be removed from the data center. – Approximately $200,000 would be saved in electricity costs per year (ignoring the cost of cooling).
- 7. Goal or Destination None of them! ● Virtualization isnot a goalby itself. ● Virtualization is a means to the strategic goal of enabling services-based IT in the enterprise It is a journey —not a destination.
- 8. Hypervisor – Host - Guest ● A hypervisor or Virtual Machine Monitor (VMM) is a piece of computer software, firmware or hardware that creates and runs virtual machines. ● A computer on which a hypervisor is running one or more virtual machines is defined as a host machine. Each virtual machine is called a guest machine.
- 9. Type vs Type ● Type 1 (or native, bare metal) hypervisors run directly on the host's hardware to control the hardware and to manage guest operating systems. A guest operating- system thus runs on another level above the hypervisor. ● Type 2 (or hosted) hypervisors run within a conventional operating-system environment. With the hypervisor layer as a distinct second software level, guest operating-systems run at the third level above the hardware.
- 10. Types explained
- 11. That's all ? Technically no ! It's Q/A Time !