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Server Virtualization Software comparison ─ Microsoft Hyper-V vs VMware vSphere vs Citrix XenServer vs Red Hat KVM

Virtualization has become popular since its evolution back in the Sixties. Back then, it absolutely was the high period of mainframes, and International Business Machines (IBM) introduced Virtual Machines and then involved them within every nook and cranny of the industrial sphere. The CP-67 software assisted in executing very distinguished applications along with enhancing consumption of various hardware resources. Conception of virtualizing can be referred to as dividing the mainframe, and has been used by VMware for introducing x86 servers in the year 1999.

The concerned technology, which contends a prime role within the future for Information Technology, especially with the appearance of cloud hosting technology in recent years, has assisted the formation of hosting as well as data center organizations to its current advanced state. However, there are still loads of misconceptions encompassing virtualization. Therefore, the aim of this post is to clarify the fundamentals of what is basically meant by server virtualization and what are the advantages of Go4hosting server virtualization as well as which type is suitable for virtualization, together with a detailed analysis of various server virtualization based software.

What is meant by server virtualization?

Virtualization can be defined as the method of making a virtual (analytically separated) Information Technology setup. There exist various categories of virtualization: server virtualization, storage virtualization, application virtualization, information driven virtualization, network virtualization and desktop virtualization; all created to induce enhanced potency and cost-affectivity for the business. Historically, servers would execute only a single application with a single software system, resulting in extremely non-effective resource consumption.
With the assistance of virtualization-based technology, various applications along with operational systems are executed on an individual server, thus enhancing the entire potency of the respective devices and hardware resources.

What is meant by virtual machine?

A ‘virtual machine’ (VM) usually consumed the host’s physical hardware such as processor, disk space as well as network adapters. ‘Hypervisor’, the concerned layer between the physical and virtual spheres of digital operation, is the fundamental center of each virtual framework. It handles the hardware-based resources from the concerned host machine. In addition, it becomes entirely its duty to share them expeditiously between very distinguished virtual machines (VMs).

There exist numerous benefits of virtualization, which are serving VMs in attaining traction. A VM based system will enhance IT based operational potency, capability, measurability, resource consumption, and offers considerable value savings.

It assists organizations in saving OPEX as well as CAPEX, scale back downtime, attain business continuity (with the backing of disaster recovery solutions) as well as supply resources to various applications quicker than traditional servers.

Comparison of various Server Virtualization based software

Microsoft Hyper-V, Citrix XenServer, VMware vSphere and Red Hat’s KVM are the most important open source hypervisors, which are ruling the virtualization market with aplomb.

Organizations typically have technical issues in deciding the simplest hypervisor, which may utterly complement the business.

A detailed comparison for prime virtualization driven software supported on the prime factors and options comprising licensing prices, virtual machine solidity, accurate costs and hardware necessities can define the items simply for Information Technology customers and end clients to pick out the simplest server virtualization code best suited to their way of conducting business.

Microsoft Hyper-V

Microsoft pioneered its hypervisor in the year of 2008, and is continuing to unharness latest versions together with the brand new Windows servers. Hyper-V assists one to extend or create a private cloud set up, encourages efficient hardware consumption, enhances business consistency and creates business development as well as making application testing highly economical.


  • Separate device assignment.
  • Nested virtualization.
  • Quality of Service (QoS) for software driven networks.
  • Restructuring of virtual hard disks, hardware memory.
  • Live migration as well as Storage Migration.
  • Replication (host-to-host replica for DR purpose).
  • Cloud backup.
  • Complete security via Windows Active Directory.
  • Storage Quality of Service (QoS).
  • Facilitates containerization.
  • Windows PowerShell Direct.

VMware vSphere

VMware vSphere refers to the set of server virtualization software items which feature virtualization, control and interface based layers. It includes enlisted core elements – infrastructure services, together with VMware vCompute, vNetwork and vStorage; application based services; vCenter Server, an individual purpose management catered over datacenter based services to assist online businesses who will use the data center through vSphere, or through a dedicated application designed to run on vSphere.

Characteristics and elements:

  • It outlines various processors, memory, storage as well as different resources towards numerous VMs.
  • vCenter Server: Centralized management oriented tool for assembling, supplying and handling virtual IT based environments. It offers data center services such as alarm management, and obtains management for ESXi hosts.
  • vSphere Client: It permits remote interface to vCenter Server or ESXi from a Windows system.
  • vSphere SDKs: It offers connections for third party driven solutions for obtaining the functions of vSphere.
  • VM File System: A group filing system for VMs.
  • Virtual SMP: It permits one VM to utilize various physical computers at one time.
  • vMotion: It permits live migration with respect to transactional integrity.
  • Storage vMotion: It permits VM file migration from a single place to another while not letting any service interruption occur.
  • High Availability: In case any server fails, that VM cluster is migrated to a different server with handy capability to maintain business consistency.
  • Distributed Resource Scheduler (DRS): Allots and equalizes compute resources and hardware resources obtainable for VMs.
  • Fault Tolerance: It produces a replica of the main VM to confirm its consistent accessibility.
  • Distributed Switch (VDS): Spans various ESXi hosts as well as permits acceptable minimization of network management tasks and enhances network capability.
  • Network and Storage Input or output management.
  • Hot add CPU along with RAM resources.

Citrix XenServer

XenServer is an open sourced item from Citrix, supported over the Xen Project Hypervisor. It is a bare-metal virtualization interface with industry level options, which may manage workloads, merge OS, and handle various networking setups. XenServer provides application conduits for x86 workloads within Intel as well as AMD environments.

It will provide control systems for the XenApp as well as XenDesktop deployments, and even supply consumers the improved virtualized machine based graphics with respect to NVIDIA along with Intel. These services enable various operating systems for implementation across the same-shared hardware.


  • Multi-server management
  • Dynamic Memory Control
  • Live Virtaul Machine migration & Storage XenMotion
  • Website Recovery
  • Host Failure Protection
  • Active Directory Integration
  • Role Based Administration and Control (RBAC)
  • Mixed Resource Pools and CPU Masking
  • Shared Virtual Switch Controller
  • In Memory Caching

Red Hat KVM (Kernel-driven Virtual Machine)

Red Hat’s KVM happens to be a comprehensive server virtualization model solution. Kernel supported Virtual Machine transforms the UNIX operating system kernel into a hypervisor. A portion of Red Hat Virtualization suite, it had been incorporated into the UNIX operating system (Linux) kernel mainline within kernel version 2.6.20.

Enlisted are the various features of Red Hat KVM:

  • Scalability.
  • Overcommit resources.
  • Disk Input or output throttling.
  • Hot plug of various virtual resources.
  • Low price virtualization solution.
  • Red Hat Enterprise Virtualization programming as well as API.
  • Live Migration & Storage Migration.
  • Allot any PCI device towards virtual machines.
  • Container assistance.
  • Disaster Recovery assistance.
  • Red Hat Satellite integration.

Go4hosting offers robust performance from cloud computing based services to assist our clients’ business development. Our Virtual Private Cloud utilizes Microsoft Hyper-V interface to supply a virtual machine based solution which is specifically created to be failsafe, by instantaneously shifting the VM from a single node to a different one in case of any nodal failure.

In fact, our cloud server and virtual machine services facilitate customers in handling all facets of their cloud – from execution to observation to security to quality enhancement, and many more!

About Rohit Paul (10 Posts)

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