
Virtualization is a tech buzzword that’s gaining momentum, so much so that you’ll even catch it on billboards around Silicon Valley (seriously, drive up Highway 101 and you’ll see it). Technically, virtualization can cover a number of things, all focusing on the ability to create multiple virtual machines within a host machine for the purposes of platform, operating system, virtual desktop infrastructure (VDI), storage, or resources. In particular, VDI is becoming an increasingly popular way to work, particularly for businesses with constantly traveling employees or 24/7 operations.
In the virtualization market, VMWare has led since its GSX Server hit the market in 2001. Today, VMWare is still the frontrunner and continues to serve most Fortune 500 companies. However, Microsoft and Citrix offer compelling alternatives. And while virtualization is commonly found in today’s IT infrastructures, much of the market hasn’t fully converted yet. What does that mean for the leading virtualization systems? Competition is fierce as the three companies duke it out for virtualization supremacy – but regardless of who comes out on top, the IT administrators wind up with greater options and flexibility; they’re the true winners in this battle.
There isn’t a one-size-fits-all answer for virtualization. All three heavy hitters have their pros and cons, and finding the right fit has more to do with individual needs and resources rather than the name on the box. Let’s take a closer look at what VMWare, Microsoft, and Citrix have to offer:
VMWare: VMWare’s vSphere is their flagship platform for cloud infrastructures. Currently at vSphere 5, VMWare’s solution is scalable with dynamic load balances and hot storage/network management without disruption or downtime; it also boasts significant hardware muscles with support for up to 1 TB of RAM and 32 virtual CPUs per virtual machine. vSphere 5′s Auto-Deploy function automatically provisions hosts based on user-defined rules while its High Availability feature provides the industry-standard safety net for downtime.
For VDI purposes, VMWare View 5 offers strong media and graphic support, including support for 3D applications using DirectX. Built for efficiency over both LAN and WAN networks, View 5 also provides strong administrative management while accommodating a high level of user customization — the best of both worlds. VMWare went for exclusivity with View 5, as it does not support Citrix or Microsoft hypervisors.
Microsoft: Virtual Server is Microsoft’s entry into the market, and like all things Microsoft, Virtual Server utilizes a Windows-based infrastructure. That, along with its out-of-the-box functionality, makes it play nice with existing Windows-based hardware. In addition, since Windows is so ingrained with most office machines, this creates an efficient big-picture rollout. With public and private cloud options, a custom solution can be tailored for a streamlined infrastructure, complete with integrated monitoring and management.
Microsoft’s VDI solution is named, quite simply, VDI. Keeping it all in the family, VDI tends to only work with Internet Explorer — other popular browsers are not supported. In addition, its overall feature set isn’t as robust as its competitors. However, because it is a Microsoft product, its support for clients using Windows is rock solid.
Citrix: XenServer is Citrix’s answer to vSphere and Virtual Server. Built on the open-source Xen hypervisor, XenServer uses a combination of paravirtualization and hardware-assisted virtualization for optimized performance. XenServer’s backup-and-recovery functionality dives a little deeper than vSphere with application-level awareness; in addition, Citrix StorageLink provides administrators with array support from major providers (HP, Dell). While XenServer matches many of vSphere’s features, it does require a larger footprint than its competitors.
Its VDI sister is XenDesktop 5.5, which has many similar features to VMWare View 5. One notable standout feature is its ability to stream a virtual desktop (client boots from server-base desktop images). XenDesktop also offers greater flexibility, capable of working with Citrix’s XenServer, VMWare’s vSphere, and Microsoft’s Hyper-V, as well as all major web browsers.
VMWare, Citrix, Microsoft — which one should you use? It’s important to note the price points. Microsoft offers Virtual Server as a free download, which almost makes it a gateway drug to other Microsoft products. Citrix and VMWare have different price points, but the per-license cost for Citrix’s highest-end version is more than VMWare’s.
Ultimately, there’s no easy way to choose; it depends on your needs, budget, and expertise. Of course, we’re here to help. Need some assistance untangling the maze that is virtualization? Contact Cal Net Technology Group, we’d be happy to answer your questions.