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Desktop Virtualization

Definition:

Desktop virtualization is a concept that says that the personal computer desktop environment has to be separated from the physical machine, using a client-server model of computing.

This model stores the virtual desktop on a remote server instead of the local storage of a client and, when the client access it, all processes, applications and data runs centrally, in the data center.

Virtual Desktop Infrastructure is a computing model that enables desktop virtualization and contains all hardware and software elements required to support the virtualized environment.

User Benefits:

The shared resources model involved in desktop virtualization offers advantages over the traditional model in different ways.

Hardware resources expenses may diminish as users will share resources allocated to them on as-needed basis. Also, data integrity is improved because all data can be maintained and backed-up in the data center.

One base image can be used to build all the necessary virtual desktops. The admin only has to maintain the base image and all the other can be updated in an automated mode.

Other advantages include:

  • Simpler provisioning of new desktops. The time savings are important in this case. There is no need to install an operating system on every new computer, just simply copy the base image and use it with a thin client.
  • Reduced downtime in the event of server or client hardware-failures
  • Lower cost of deploying new applications
  • Desktop image-management capabilities. In this situation, updates and patches can easily applied to any virtual desktop. 
  • Longer refresh cycle for client desktop infrastructure because you do not need a hardware upgrade for every client when a new OS or application requires it.
  • Secure remote access to an enterprise desktop environment

Business Impact:

Virtual Desktop Infrastructure technologies virtualize desktop images that can be deployed from a centralized hosting server. This provides the reduction of operational costs and improved security while maintaining the current end user experience. User experience will remain the same that means no learning curve for the users.

One of the main drives that lead to virtualization is the possibility of reducing capital and operational expenses.

On the same level of importance, virtualization simplifies desktop administrative and management tasks, which also translates in money.

 A Virtual Desktop Infrastructure reduces downtime, speeds the resolution of problems, improves manageability and control, and helps IT maintain security and data protection.

The result is higher availability and improved worker productivity.

 


 


Products supporting this technology

VMware

Virtualization: How to improve manageability, security and administration at a lower the costs.

Let’s start with the basics: what is virtualization?

Virtualization, in computing, is known as the process of transforming something physical in virtual, to create a virtual version of something like physical servers, storage or applications  in order to obtain a better resource utilization and efficiency.

The goals of every virtualized project are to improve manageability and to lower the costs. Even if we are talking of server virtualization or desktop virtualization, the goals are the same.

What it came in terms of manageability, security and cost effectiveness?

From the cost point of view, an organization does not have to maintain and to support a large amount of desktops, but to use thin clients. Even the acquisition of thin clients can be postponed by using because the organization can use the old PC’s. All CPU and other resources will be available from the datacenter.

Maintenance: in the physical world, when a problem occurs, and IT staff member must go to the PC to troubleshoot and fix problems. If the problem appears to a remote worker desktop, the user has to wait for someone to the site or may be asked to return the computer to the main office for repairs. In the virtual world, when all the resources are located in the datacenter, the speed of solving a problem to give to a user the possibility to use company resources is increased.

Also, you do not need IT infrastructure on the remote offices.

Security: In many cases, software updates and patch installations can be automated. But frequently, the patch installations occur during non-work hours when users turn their PCs off. Users may also need help with the process, again taking up IT staff time.

Worse, some users may ignore instructions and not install the updates or patches. This can result in a desktop PC being infected with malicious software.

Since all data are maintained inside the corporate firewall, the risk of losing data is minimized.

Easy migration: many companies are preparing to migrate to a new operating system. Before any systems can be migrated, companies will need to perform a hardware inventory on each PC to see if it has the CPU, memory, and disk space to run the new operating system. Companies also need to inventory peripherals in those desktop PCs to check whether they are supported in the new SO. Similarly, a software inventory is required to see which programs must be run on the existing PC or be transferred to a new desktop.

This process is time consuming and can also lead to new PC acquisition.

Another important benefit came from the Green initiative. By using virtualization in conjunction with thin clients, the amount of energy used by traditional PC’s is reduced with almost 90% and the carbon footprint with almost 80%

Desktop virtualization uses PCoIP, a high-performance, server-centric protocol display protocol, specially built for delivering virtual desktops over the WAN or LAN and to offer a superior end-user experience.

In a PCoIP environment, the remote workstation or server handles the processor-intensive computing work. Then the PCoIP protocol securely transmits all the necessary data over a standard IP network to a thin client device back at the user’s desk. Despite their low cost and bare-bones approach, these client devices deliver no-compromise PC-like performance—without any of the hassles commonly associated with managing a network of desktops.

PCoIP deliver rich media content and offer seamlessly access locally attached peripherals such as printers, scanners or mass storage.

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