![]() ![]() When a different operating system is operating on top of another underlying primary operating system through virtualization, it is referred to as a virtual machine. Here, multiple operating systems will be run on a single hardware where hardware is emulated through software. Most common virtualization is operating system level virtualization. To have a clear idea of virtualization as well as cloud computing, please do look at our article on both of them here :īasic technical details of virtualization To be more precise, we can tell that cloud computing cannot be achieved without virtualization. Cloud computing is the technology used to deliver these virtual computing devices via the internet. "These enterprises have several viable alternatives from which to choose.In computing, virtualization refers to creating a virtual version of computing devices like servers, hardware platforms, storage devices, computer network resources, etc. "While the majority of Global 1000 enterprises have been virtualizing for several years, many smaller enterprises and those in emerging economies are just starting out, or haven't started yet," says Gartner. Which company do you think will overtake VMware?Microsoft's Hyper-V is just 3 years old yet its price and integration with other Microsoft products make it a popular choice for mid-sized businesses that that lack resources or the inclination to call on a separate virtualization vendor. The virtual server market is growing rapidly and the dominance of the various players is shifting, so VMware's early lead is being chipped away, leaving customers with a lot to ponder, Gartner says, particularly those smaller customers just adopting virtualization. The established customer bases of these other vendors can only help the spread of Red Hat's virtual environment. Red Hat's KVM efforts will most probably get a boost from IBM, HP, Intel, all of which are members of the Open Virtualization Alliance, which is dedicated to encouraging use of open virtualization technology. As such, Red Hat is a clear option for Linux shops. With the acquisition of Qumranet Red Hat gained kernel-based technology to run on its Linux platform. ![]() But it has aggressively been working to make its virtual environment more manageable and robust. Red Hat has perhaps the most work to do, with Gartner projections for its share of the market next year only 2%. Citrix's XenCenter already supports managing Microsoft hypervisors and virtual machines. ![]() In the latest version, XenServer will be manageable from Microsoft's upcoming Systems Center Virtual Machine Manager. And Citrix is continuing its collaboration with Microsoft to support management of each other's virtual environments. That's still less than half what VMware and Red Hat support. The company recently came out with a new version of its virtual server- XenServer 6.0 - that supports better sharing of CPUs among virtual machines and boosts its overall support for virtual CPUs to 16 and 128GB of virtual memory. Meanwhile, Citrix, which Gartner projects to hold 6% of the market next year, is making strides working off its base of virtual desktop customers and recent assertions that it will drop prices next year to be less expensive than traditional physical desktops. Gartner says x86 boxes will grow from 11 million virtual machines in 2009 to more than 55 million next year. Year-to-year growth is significant because the number of X86 servers being converted to virtual servers is also growing dramatically. Within that projected 27%, Gartner says Microsoft will have captured 85% of all businesses with less than 1,000 employees that use virtual servers. Separately, Gartner projects that by next year Hyper-V will account for 27% of the market, up from 11% two years ago. Hyper-V grew 62% last year compared to ESX's 21% growth and Citrix's 25%, according to IDC. This flurry of improvements is in addition to progress Hyper-V has been making against ESX in licenses issued. #Xen vs kvm vs virtualbox vs vmware plusPlus Hyper-V will have capacity access more virtual CPUs than ever before. He says Hyper-V outstrips VMware in inexpensive server-attached storage, aspects of live migration and failover for site-to-site disaster recovery. ![]() New features put it "on par and in some ways better than VMware," according to Aidan Finn, a Microsoft IT consultant in Dublin, Ireland. #Xen vs kvm vs virtualbox vs vmware upgradeBY THE NUMBERS: Juniper: We have 200 QFabric data center switch customers nowĪnd Microsoft is on the offensive because of the forthcoming upgrade to Hyper-V coming with Windows Server 8. ![]()
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