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VDI conparision: Which one to choose, VMware, Citrix?

Or should I say is upgrading to Vista worth ab bargain? I have heard of official protest groups in Holland and elsewhere who want to cxontinue working on XP for another few years. Offering a fat GUI OS via VDI conenction broker is not a smart idea. It was never meant to push an elephant through a thin wire.

Anyways the comparison, if its worthy the discussion actually or within the context of a typical thin computing model, is here:

It's important to note that a VDA does all the work on the back-end servers where the VMs run; therefore, to accurately estimate the cost of a VDA, you'll need to take into account the server and virtualization software expenses. Estimating these costs will require walking through a series of calculations, which can be modified for a customer's specific environment. As an example, based on numbers from VMware, let's assume that a server can run six to eight virtual desktops per core, with dual-socket quad-core processors totaling eight cores, yielding 48 to 64 virtual desktops per server for the back-end hardware. If we use VMware's Virtual Desktop Infrastructure (VDI) solution, built on VMware's VI3 (Virtual Infrastructure 3) server virtualization software for our example, the Enterprise license of VI3 is $5,750, so the cost for VI3 is roughly $100 per VM. According to VMware, Virtual Center (VMware's management console) can support 1,000 users per instance for $6,000, which adds only $6 per VM. For connection broker software such as VMware's Virtual Desktop Manager (VDM) or a connection manager from a third party, you should add another $50 per VM. Since storage for the virtual desktop VMs under VMware lives on a SAN, storage costs should be factored into the equation. Depending on implementation, these can be quite high, so let's assume $150 per VM for this example. Prorating the server hardware costs per VM adds roughly $350 to $400 per VM. That brings the estimated total to $700 per VM, excluding the user interface device (since in our example, the user is connecting from the existing PC acting as a thin client). To include thin-client devices for new users, add $150 to $300 per user for just the thin client or as much as $900 for an integrated all-in-one thin client (which includes the monitor and keyboard), bringing the total cost to between $900 and $1,600.

The simplified bottom-line pricing comparison (using the very rough example numbers given here) is this: Upgrading a physical desktop to Vista might cost $300 to $400 (per desktop) in hardware costs and $200 to $300 in software costs, totaling $500 to $700 per physical desktop. Delivering Vista through a virtual desktop architecture (VMware's VDI in this example) and continuing to use existing PCs as rich clients accessing virtual desktops might cost $700 per VM desktop in infrastructure costs and $23 per VM desktop, if using VECD, totaling $723 per virtual desktop.



Link, heard from Alex first.

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