{"id":12456,"date":"2020-04-08T08:10:04","date_gmt":"2020-04-08T08:10:04","guid":{"rendered":"https:\/\/www.accuwebhosting.com\/blog\/?p=12456"},"modified":"2026-08-21T13:41:19","modified_gmt":"2026-08-21T13:41:19","slug":"technical-overview-of-server-virtualization-technologies","status":"publish","type":"post","link":"https:\/\/www.accuwebhosting.com\/blog\/technical-overview-of-server-virtualization-technologies\/","title":{"rendered":"Technical Overview of Virtualization Technologies"},"content":{"rendered":"

What is Virtualization?<\/h2>

\"\"<\/a><\/p>

Introduction<\/h2>

Virtualization has become a key technology in modern IT infrastructure, from data centers and cloud platforms to development environments and business applications. As organizations look for more flexible ways to manage computing infrastructure, different virtualization technologies have emerged to support servers, operating systems, networks, storage, and applications.<\/p>

Each virtualization approach works differently and is suited to specific workloads and infrastructure requirements. Understanding these technologies makes it easier to choose the right virtualization solution based on factors such as performance, resource management, scalability, and isolation.<\/p>

In this article, we’ll look at the major virtualization technologies, how they work, and where they are commonly used.<\/p>

What Is Virtualization?<\/h2>

Virtualization is the process of creating a virtual version of computing resources using a single physical hardware system. Instead of running one operating system or workload directly on a physical server, virtualization allows multiple virtual environments to share the same underlying hardware resources.<\/p>

These virtual environments can include operating systems, servers, networks, storage, and other computing resources<\/b>. Each virtual environment works independently while sharing the physical infrastructure.<\/p>

In simple terms, virtualization allows one physical server to run multiple virtual machines (VMs)<\/b>. Each VM can have its own operating system, applications, and allocated resources such as CPU, memory, storage, and networking.<\/p>

This helps organizations use hardware resources more efficiently while improving flexibility, scalability, and workload management.<\/p>

Types of Virtualization<\/h2>

Virtualization is not limited to creating virtual machines. It can be applied to different parts of an IT infrastructure, depending on what needs to be isolated, shared, or managed more efficiently. The most common approaches include server, application, network, storage, desktop, and memory virtualization.<\/p>

Server Virtualization<\/h3>

Server virtualization allows one physical server to host multiple virtual machines instead of dedicating the entire machine to a single workload. A hypervisor manages the available CPU, memory, storage, and networking resources and assigns them to individual VMs.<\/p>

Each virtual machine operates as a separate environment, so different operating systems and applications can run on the same physical server. For example, a business could use one physical server to host a Windows application server, a Linux web server, and a separate testing environment.<\/p>

This approach is commonly used in data centers and cloud environments because it can make better use of existing hardware while simplifying server deployment and management.<\/p>

Application Virtualization<\/h3>

Application virtualization separates an application from the traditional process of installing and running it directly on a user’s device. Depending on the technology, the application may run in an isolated environment or be delivered from a centralized server.<\/p>

This can make software deployment easier, particularly when the same application needs to be made available to many users or devices. It can also reduce compatibility issues by keeping applications separated from the underlying system.<\/p>

For example, an organization can provide employees with access to a business application without requiring the complete application setup on every workstation.<\/p>

Network Virtualization<\/h3>

Network virtualization creates logical networks and network services on top of physical networking equipment. Instead of treating the physical network as one fixed environment, administrators can create separate virtual networks, segments, and services through software.<\/p>

This makes it easier to separate workloads, control traffic, and adjust network configurations as requirements change. Technologies such as VLANs, software-defined networking (SDN), and virtual network functions are commonly associated with network virtualization.<\/p>

For example, a company can create separate virtual network segments for its application servers, employee systems, and guest devices while using the same underlying network infrastructure.<\/p>

Storage Virtualization<\/h3>

Storage virtualization brings storage resources from different physical devices together and presents them as a logical storage system. Administrators can manage the available capacity without having to work with each physical storage device separately.<\/p>

This can simplify storage allocation and make it easier to expand capacity as requirements grow. It is also useful for environments where storage needs to be shared across multiple servers or applications.<\/p>

Storage virtualization is commonly found in enterprise storage systems, SAN environments, cloud infrastructure, and backup platforms.<\/p>

Desktop Virtualization<\/h3>

Desktop virtualization hosts a user’s desktop environment on centralized infrastructure instead of relying entirely on the local computer. Users connect to that environment remotely and interact with their usual desktop, applications, and files.<\/p>

This can be useful for organizations that need to provide consistent desktop environments across multiple locations or devices. IT teams can manage the virtual desktops centrally rather than configuring every physical machine individually.<\/p>

For example, an employee working from home can connect to a company-managed virtual desktop from a laptop and access the applications and resources provided by the organization.<\/p>

Memory Virtualization<\/h3>

Memory virtualization abstracts physical memory resources so that systems can manage memory more flexibly. Depending on the virtualization platform, memory can be allocated, shared, or managed between virtual machines and physical hosts.<\/p>

This helps virtualization platforms make better use of available RAM, particularly when several workloads are running on the same physical server. Features such as memory sharing and dynamic memory allocation can adjust memory usage according to workload requirements.<\/p>

Memory virtualization is mainly encountered as part of server and VM management rather than as a standalone infrastructure service.<\/p>

Data Virtualization<\/h3>

Data virtualization provides a unified way to access information stored across different sources without necessarily moving all of that data into one physical location. It creates an abstraction layer that allows applications or users to work with data from multiple systems through a common interface.<\/p>

For example, a business dashboard could retrieve information from a database, cloud storage, and another business application and present the results together without first consolidating every source into a single database.<\/p>

This approach can be useful for reporting, analytics, and environments where data is distributed across on-premises and cloud systems.<\/p>

What Are Virtualization Technologies?<\/h2>

Virtualization technologies are the tools and software platforms used to create and manage virtual environments. They allow businesses to run multiple virtual machines, operating systems, networks, or storage environments using shared physical hardware.<\/p>

Instead of running every workload on a separate physical server, virtualization makes it possible to use the available hardware resources more efficiently. This can help reduce costs related to hardware, power, physical space, and maintenance.<\/p>

Different virtualization technologies are available for different requirements. Some are designed for server virtualization<\/b>, while others focus on desktops, networks, storage, or cloud environments. These technologies make it easier for businesses to create and manage flexible IT environments without depending entirely on separate physical systems.<\/p>

How Do Virtualization Technologies Work?<\/h2>

Virtualization works by using a software layer called a hypervisor<\/b>. The hypervisor runs on a physical server, known as the host<\/b>, and manages how the server’s hardware resources are allocated.<\/p>

The hypervisor can divide the host’s CPU, RAM, storage, and network resources<\/b> into multiple virtual environments called virtual machines (VMs)<\/b>. Each virtual machine can run its own operating system, known as a guest operating system (Guest OS)<\/b>, along with its applications and services.<\/p>

A single physical server can therefore run multiple virtual machines independently. The hypervisor manages the allocation of resources and helps ensure that each virtual machine operates as a separate environment.<\/p>

For example, a physical server can run Windows and Linux virtual machines<\/b> at the same time, with each VM configured according to its individual requirements. This makes it possible to deploy and manage workloads more efficiently without requiring a separate physical server for every operating system or application.<\/p>

List of Virtualization Technologies<\/h2>

1. Hyper-V<\/h3>

\"\"<\/a><\/p>

Hyper-V virtualization technology<\/b><\/a> is provided by Microsoft for Windows Server virtualization. You can create and run virtual machines on a Windows Server using Hyper-V technology.<\/p>

Hyper-V is one of Microsoft’s widely used client and server virtualization technologies. It is used to create a virtualized computing environment on a physical server.<\/p>

With the help of the hypervisor layer, Hyper-V controls physical hardware resources and allocates them to virtual machines. The Hyper-V platform was introduced with Windows Server 2008. Hyper-V is a bare-metal or native hypervisor<\/b>, also known as a Type 1 hypervisor<\/b>. It supports various guest operating systems, including Windows and Linux.<\/p>

The Hyper-V Manager<\/b> provides management tools for the Hyper-V environment. Using Hyper-V Manager, users can manage virtual machines, monitor server status, configure virtual hard disk files, add hosts, and perform other management tasks.<\/p>

Live Migration in Hyper-V<\/h3>

Live Migration allows a virtual machine to be moved from one Hyper-V host to another with little or no service interruption. Hyper-V supports moving a running virtual machine from the original host to another host while helping keep the workload available.<\/p>

The network connection between the hosts helps transfer the virtual machine while minimizing downtime. Live Migration can be useful when moving workloads for maintenance or resource management.<\/p>

What Is Quick Migration in Hyper-V?<\/h3>

Quick Migration is similar to other virtual machine migration methods, except that it causes a temporary service interruption while the virtual machine is moved between two hosts or nodes.<\/p>

Unlike Live Migration, the virtual machine is briefly paused during the transfer. Quick Migration is still useful in situations where a short interruption is acceptable and can be used to move virtual machines between hosts when required.<\/p>

License Subscription<\/h3>

Hyper-V virtualization is available with different Windows Server editions, including Windows Server 2012 Essentials, Standard, and Datacenter<\/b>. Each edition offers different licensing options and virtualization rights. The licensing cost and available features may vary depending on the edition and the country or region where the license is purchased.<\/p>

Note <\/strong>: Microsoft may revise prices periodically for HyperV Licensing, Therefore, we recommend our readers to check for the current pricing directly from Microsoft Website only.<\/p>

<\/div>
\n\n\n\n\n\n\n\n
Features<\/b><\/td>\nEssentials Edition<\/b><\/td>\nStandard Edition<\/b><\/td>\nDatacenter Edition<\/b><\/td>\n<\/tr>\n
Specialization<\/b><\/td>\nFor small businesses with up to 25 users running server workloads<\/td>\nUsed for non-virtualized or lightly virtualized environments<\/td>\nUsed for highly virtualized and private cloud environments<\/td>\n<\/tr>\n
Price (Base List)<\/b><\/td>\n~$500 – $600 USD<\/td>\n~$1,060 USD per 16-core license<\/td>\n~$6,155 – $6,770 USD per 16-core license<\/td>\n<\/tr>\n
Processor Licensing<\/b><\/td>\nUp to 1 CPU (10-core limit)<\/td>\nCore-based (Minimum 16 cores per server)<\/td>\nCore-based (Minimum 16 cores per server)<\/td>\n<\/tr>\n
License with VM Conditions<\/b><\/td>\n1 OS \/ Server with a 25-user limit<\/td>\nUp to 2 Virtual Machines<\/td>\nUnlimited Virtual Machines<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>
<\/div>

(2) VMWare<\/h2>

\"\"<\/a><\/h2>

VMware virtualization technology<\/b><\/a> is a widely used virtualization platform that allows users to create and run multiple virtual machines on a physical server.<\/p>

VMware is known for its range of virtualization and management tools for different computing environments. Its technology helps users create and manage virtual machines by using and allocating available hardware resources.<\/p>

The platform allows administrators to create virtualized environments by dividing physical resources such as processors, storage, network adapters, and network resources among multiple virtual machines. Each virtual machine can then operate independently while sharing the underlying physical hardware.<\/p>

VMware also provides security features, including encryption and key management capabilities, to help protect data and virtualized workloads. Its enterprise platforms include tools and technologies designed for virtual machine management and infrastructure administration. VMware environments can be managed using tools such as vCenter Server, vSphere Client, vMotion, and ESXi<\/b>.<\/p>

Live Migration in VMware<\/h3>

VMware allows users to move running virtual machines between different physical servers with little or no noticeable downtime. This process is commonly performed using VMware vMotion<\/b> and can help administrators move workloads without interrupting users or applications.<\/p>

Live migration requires appropriate shared infrastructure, sufficient resources, and a reliable network connection between the physical hosts. During the process, the active state and memory of the virtual machine are transferred from one host to another.<\/p>

The main advantage of live migration is that it allows administrators to perform hardware maintenance and manage workloads without requiring extended service interruptions. Tools such as vSphere and vMotion<\/b> can also help administrators manage and automate the movement of virtual machines between hosts.<\/p>

VMware provides several hardware and virtual infrastructure management tools, including vCenter Server, vSphere Client, vMotion, and ESXi<\/b>, allowing administrators to manage and monitor their virtualized environment.<\/p>

License Subscription<\/h3>

The following information covers the vSphere licensing and features available in 2020<\/b>. Depending on the edition, vSphere provides capabilities for managing virtual environments and workloads.<\/p>

For live and virtual machine management, vSphere supports features such as storage maintenance, live migration, high availability, backup, and restore capabilities<\/b>. Security tools, including antivirus solutions designed for virtual environments, can also be used to help protect virtual machines and applications.<\/p>

Please note that VMware licensing options and pricing may vary by edition, licensing model, and country or region<\/b>.<\/p>

Note<\/strong> : VMWare may revise prices periodically, Therefore, we recommend our readers to check for the current pricing directly from VMWare Website only.<\/p>

<\/div>
\n\n\n\n\n\n\n\n
vSphere Subscription Offerings<\/b><\/td>\nEstimated Pricing (per core \/ per year)<\/b><\/td>\nSupport Included<\/b><\/td>\n<\/tr>\n
vSphere Standard (VVS)<\/b><\/td>\n~$50 USD \/ core\/year<\/td>\nProduction Support Included<\/td>\n<\/tr>\n
vSphere Essentials Plus Kit (VVEP)<\/b><\/td>\n~$35 – $45 USD \/ core\/year (96-core bundle)<\/td>\nProduction Support Included<\/td>\n<\/tr>\n
vSphere Foundation (VVF)<\/b><\/td>\n~$135 – $150 USD \/ core\/year<\/td>\nProduction Support Included<\/td>\n<\/tr>\n
VMware Cloud Foundation (VCF)<\/b><\/td>\n~$350 USD \/ core\/year<\/td>\nProduction Support Included<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>
<\/div>

(3) KVM<\/h2>

\"\"<\/a><\/h2>

KVM virtualization technology<\/b><\/a> is a Linux-based, free, and open-source full virtualization technology. KVM stands for Kernel-based Virtual Machine<\/b>.<\/p>

KVM is an open-source virtualization technology built into the Linux kernel. It provides a complete virtualization solution for x86-based systems and allows users to create and run multiple virtual machines on a single physical server. Each virtual machine can have its own allocated CPU, memory, storage, network interfaces, and other virtual hardware resources.<\/p>

The KVM hypervisor allows several operating systems to run independently on the same physical host. KVM uses hardware virtualization extensions available in modern processors to create and manage virtual machines. The hypervisor enables interaction between the virtual machine and resources such as storage, network interfaces, memory, and processors.<\/p>

KVM also uses hardware-based isolation to help separate virtual machines from one another. Each virtual machine runs as an isolated process, helping maintain boundaries between workloads running on the same physical server.<\/p>

Live Migration in KVM<\/h3>

KVM supports both live and offline migration<\/b>, allowing virtual machines to be moved from one node to another. Live migration can transfer a running virtual machine with little or no noticeable downtime, while offline migration requires the virtual machine to be stopped before it is moved.<\/p>

KVM migration can be performed without requiring traditional failover clustering. However, the compatibility of guest machines depends on the hardware and architecture of the source and destination hosts.<\/p>

License Subscription<\/h3>

Unlike many commercial virtualization platforms, KVM is free and open source<\/b>. It includes several virtualization capabilities without requiring a separate KVM software license.<\/p>

However, organizations can choose commercially supported virtualization platforms and management tools built around KVM. Providers such as Red Hat<\/b> offer enterprise support and additional management features for KVM-based virtualization environments.<\/p>

(4) Citrix server virtualization (previously referred to as XenServer<\/h3>

\"\"<\/a><\/p>

Citrix virtualization technology<\/b><\/a> provides virtualization for servers, desktops, and applications using the Xen hypervisor<\/b>.<\/p>

Citrix Server Virtualization is one of the widely used virtualization technologies for managing virtual machines, storage, and network configurations. It is designed for server, desktop, and application virtualization and can support environments that require scalability and centralized management.<\/p>

The platform runs on the Xen hypervisor<\/b>, which allows multiple virtual machines to run on the same physical server. Each virtual machine can be configured with its own resources, including storage, networking, and computing resources.<\/p>

Citrix Hypervisor also helps manage virtual machine resources during periods of high system demand. It supports the naming and tagging of virtual machines and includes features for live migration and creating reusable virtual machine templates.<\/p>

Live Migration in Citrix Server Virtualization<\/b><\/h3>

Citrix Server Virtualization supports both live and offline migration<\/b> of virtual machines between servers. When the required storage is shared between the source and destination servers, a running virtual machine can be migrated with little or no noticeable downtime.<\/p>

Shared storage can make the migration process easier because both servers can access the virtual machine’s data. This allows the virtual machine to continue running while its active state is transferred to another server.<\/p>

License Subscription<\/b><\/h3>

Citrix Server Virtualization offers different licensing options depending on the selected edition and available features. Licensing and subscription models may be based on factors such as server capacity and support requirements.<\/p>

An annual subscription may include software maintenance and technical support. The available licensing options, pricing, and support services can vary by edition and region.<\/p>

For the latest licensing information, available editions, and regional pricing, you should check the official Citrix website before selecting a plan.<\/p>

Note<\/strong>: Citrix may revise prices periodically, Therefore, we recommend our readers to check for the current pricing directly from Citrix Website only.<\/p>

<\/div>
\n\n\n\n\n\n\n
License Version<\/b><\/td>\nPricing Per Month, Per User<\/b><\/td>\nLicense Details<\/b><\/td>\n<\/tr>\n
Workspace Standard \/ DaaS Standard<\/b><\/td>\n~$10 – $15 USD<\/td>\nIncludes web applications, file sharing, and basic app delivery.<\/td>\n<\/tr>\n
Workspace Premium \/ DaaS Advanced<\/b><\/td>\n~$20 USD<\/td>\nA complete digital workspace solution for users who require advanced security controls and virtual apps.<\/td>\n<\/tr>\n
Workspace Premium Plus \/ DaaS Ultimate<\/b><\/td>\n~$25 – $35 USD<\/td>\nA complete workspace solution supporting hybrid deployment options, cloud management, and advanced virtualization capabilities.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>
<\/div>

What Security Measures Should You Take When Using Virtualization Technologies?<\/h2>

To help protect both the virtual machines and host servers<\/b> in a virtualized environment, consider the following security measures:<\/p>

    \n
  • Use private or secure networks<\/b> when accessing virtual machines to reduce exposure to unauthorized access.<\/li>\n
  • Secure virtual machine files and storage<\/b> by setting appropriate access permissions for virtual disks, configuration files, and other virtualized resources.<\/li>\n
  • Configure firewalls and other security tools<\/b> to help protect servers from malware, unauthorized access, and other security threats.<\/li>\n
  • Keep the host system, hypervisor, and guest operating systems updated<\/b> with the latest available security patches.<\/li>\n
  • Use strong access controls<\/b> and limit administrative access to authorized users only.<\/li>\n
  • Choose hardware that supports modern virtualization and security features<\/b>, including 64-bit processors with hardware virtualization support.<\/li>\n<\/ul>

    Conclusion<\/h2>

    Virtualization can help businesses and individuals reduce their dependence on physical hardware and simplify the management of IT resources. By creating virtual environments on shared physical infrastructure, organizations can make more efficient use of servers, storage, networks, and other hardware resources.<\/p>

    There are different types of virtualization technologies designed for different requirements, including hardware, software, memory, storage, network, and desktop virtualization<\/b>. Popular platforms such as Hyper-V, VMware, KVM, and Citrix Hypervisor<\/b> provide different features and management options for virtualized environments.<\/p>

    Choosing the right virtualization technology depends on factors such as your operating system requirements, infrastructure size, performance needs, security requirements, and budget. With proper configuration and security practices, virtualization can provide a flexible and efficient way to manage computing resources and virtual workloads.<\/p>

    Frequently Asked Questions<\/h2>

    What is virtualization technology?<\/h3>

    Virtualization technology allows a single physical server or computer to create and run multiple virtual environments. These virtual environments can include virtual machines, operating systems, storage, networks, and applications.<\/p>

    What is a hypervisor?<\/h3>

    A hypervisor is software that creates and manages virtual machines. It allocates physical resources such as CPU, RAM, storage, and networking to different virtual machines running on the same physical server.<\/p>

    What are the main types of virtualization?<\/h3>

    The main types of virtualization include hardware virtualization, software virtualization, memory virtualization, storage virtualization, network virtualization, and desktop virtualization<\/b>.<\/p>

    What are some popular virtualization technologies?<\/h3>

    Popular virtualization technologies include Microsoft Hyper-V, VMware, KVM, and Citrix Hypervisor<\/b>. Each platform provides different features for creating and managing virtual machines and virtualized environments.<\/p>

    What is the difference between a virtual machine and a physical server?<\/h3>

    A physical server is an actual hardware machine with physical components such as a processor, RAM, and storage. A virtual machine is a software-based computer created on a physical server using virtualization technology.<\/p>

    What is live migration in virtualization?<\/h3>

    Live migration allows a running virtual machine to be moved from one physical host to another with little or no noticeable downtime. It can be useful when performing server maintenance or managing workloads.<\/p>

    Is KVM free to use?<\/h3>

    Yes. KVM is a free and open-source virtualization technology built into the Linux kernel. However, some organizations may choose commercial management tools or support services for KVM-based environments.<\/p>

    Which virtualization technology is best?<\/h3>

    The best virtualization technology depends on your operating system, workload requirements, budget, and management needs. Hyper-V<\/b> is commonly used in Windows environments, KVM<\/b> is widely used with Linux, while VMware and Citrix Hypervisor<\/b> offer different tools for managing larger virtualized environments.<\/p>

    Is virtualization secure?<\/h3>

    Virtualization can be secure when the host server, hypervisor, and virtual machines are properly configured and maintained. Using firewalls, strong access controls, private networks, updated software, and appropriate file permissions can help improve security.<\/p>

    What is the difference between live migration and quick migration?<\/h3>

    Live Migration<\/b> moves a running virtual machine between hosts with little or no noticeable service interruption. Quick Migration<\/b> temporarily pauses the virtual machine during the migration process, which may result in a short service interruption.<\/p>\n","protected":false},"excerpt":{"rendered":"

    What is Virtualization?IntroductionVirtualization has become a key technology in modern IT infrastructure, from data centers and cloud platforms to development environments and business applications. As organizations look for more flexible ways to manage computing infrastructure, different virtualization technologies have emerged to support servers, operating systems, networks, storage, and applications.Each virtualization approach works differently and is suited to specific workloads and infrastructure requirements. Understanding these technologies makes it easier to choose the right virtualization solution based on factors such as performance, resource management, scalability, and isolation.In this article, we’ll look at the major virtualization technologies, how they work, and where they <\/p>\n","protected":false},"author":4,"featured_media":12496,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-12456","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vps-hosting","has_thumb"],"yoast_head":"\nVirtualization Technologies: Types, Uses & Examples<\/title>\n<meta name=\"description\" content=\"Learn about virtualization technologies, their types, how they work, and popular platforms like Hyper-V, VMware, KVM, and Citrix.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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