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VMware, Inc.Â is a company providing virtualization software and business infrastructure virtualization topping the 1st position inÂ Gartner’s Magic Quadrant for x86 Server Virtualization Infrastructure companiesÂ followed by Microsoft and Citrix System. Vmware offers Desktop Virtualization, Virtualizing Enterprise Applications and DATACENTER SOLUTIONS offering both commercial and free solutions for virtualization . VMware ESX and VMware ESXi bare-metal embedded hypervisors are the primary products for server managed using its notable Virtual Infrastructure or vSphere. Vmware boasts of 60-80% utilization rates for x86 servers compared to 5-15% in non-virtualized PCs, cost savings of at least $3,000 annually for every workload virtualized, provisioning new applications in minutes instead of days and 85% improvement in recovery time.
Kernel-based Virtual Machine (KVM)
Kernel-based Virtual Machine (KVM)Â is aÂ hypervisor that provides a full virtualization infrastrucure based on the Linux kernel containing virtualization extensions for Intel VT or AMD-V. Â KVM distinguish itself with its added level of security by providing Mandatory Access Control. Â KVM’s bare metal design has lower total cost of ownership and greater flexibility. It is very much similar to other x86 hypervisors and is rigorously implemented and tested by open source community and developers regularly.
ProxmoxÂ delivers a virtualization platform for software vendors and Open source projects for running their server software as a pre-configured Virtual Appliance on the Proxmox Virtual Environment.Â Proxmox VEÂ offers a powerful Open Source Server Virtualization management solutions for servers, based on KVM and OpenVZ it provide near-bare-metal performance and leading scalability. It offers a powerful web interface based on a heavily tweaked Debian 6.0 x86_64 distribution. It is acontainer-based virtualization using OpenVZ and full virtualization using KVM, thus giving advantage of using Linux Vms and other operating system including Windows. Proxmox VE has powerful features like Cluster storage and turnkey linux appliances.Â Proxmox Virtual Environment is a free software for virtualization , specifically a hypervisor to virtual machine.
OpenVZ is an opensource container-based virtualization solution for linux. It serves as the basis of Parallels Virtuozzo. It is an alternate solution to Parallelâ€™s Virtuozzo, various extensions are available offering GUI control.Â OpenVZ creates multiple secure, isolated Linux containers (otherwise known as VEs or VPSs) on a single physical server enabling better server utilization and ensuring that applications do not conflict.Â As compared to virtual machines such as VMware and paravirtualization technologies like Xen, OpenVZ is limited in that it requires both the host and guest OS to be Linux (although Linux distributions can be different in different containers).Â OpenVZ remains popular solution for free virtualization needs with a strong community backed by Parallels.
Red Hat Enterprise Virtualization (RHEV)
Using KVM hypervisor at its coreÂ Red Hat Enterprise Virtualization (RHEV)Â is an enterprise virtualization solution by Red Hat. Â RHEV uses the SPICE protocol and VDSM (Virtual Desktop Server Manager) with a RHEL-based centralized management server.Â oVirt serves as the testing ground for RHEV which is a stable, well tested enterprise level product. RHEV supports up to 160 cores and up to 2TB of RAM on each host and is picking pace in competition with other big players like Vmware, Microsoft and Citrix.
Parallels Virtuozzo Containers
Parallels Virtuozzo is a popular Hosting & Cloud Enablement virtualization solution from Parallels. It offers a hypervisor alternative, in the form of Parallels Virtuozzo Containers delivering similar results in comparison to famous virtualization technologies like Vmware and Citrix. Its architecture is based on O/S Virtualization against the traditional hardware virtualization solutions and in some requirements offering a better solution option to its direct technology competitors. Â Virtuozzo takes the strong, fast base of OpenVZ and adds to it. Virtuozzo features even better performance over OpenVZ.Â Parallels Virtuozzo Containers is uniquely suited to Cloud server virtualization, enabling near instant provisioning and on-the-fly modification of hosting and Cloud server plans while delivering maximum density, cost efficiency and application performance.
Citrix XenServer is a complete, managed server virtualization platform built on the powerful Xen hypervisor providing a virtual infrastructure for servers, desktops and clouds. XenServer is designed for efficient management of server virtualization and datacenter automation. Citrix has released latest version of XenServer adding its support with Leading Cloud Platforms. Xenserver is available in Free, Advanced, Enterprise and Platinum version keeping itself aligned with growth in Server Virtualization Market.