Why Is HVD/VDI Not a Popular DV Solution?
The complexity and rising maintenance costs of desktop management prompted IT experts to create a product that could efficiently handle all the processes. This resulted in desktop virtualization, where users can access their desktops through the availability of multiple virtual machines hosted on servers.
The server-side desktop virtualization employs a technology that separates the applications, personal settings and data from the underlying OS. This means that virtual desktops can be accessed from anywhere and at any given time. The server-side virtualization methodology implements a VDI, or Virtual Desktop Infrastructure, that delivers the HVD, or Hosted Virtual Desktops, from data centers. In this methodology several independent virtual operating systems or Virtual Machines can be executed on a single physical computer by utilizing the hardware resources in the underlying OS.
Disadvantages of the VDI Solution
Despite the benefits of centralized desktop management, hardware efficiency and secure virtual workspaces, the VDI has not responded well to the demands of IT for several reasons:
- Costly option – secure virtual workspace along with that of the servers, thin clients, software licenses and SAN storage can severely diminish your savings.
- Management complexities – Handling multiple OS and applications to manage multiple virtual machines is a complex and strenuous procedure. It is also expensive when the VDI has to be moved from one server to another at times when the server fails to work.
- Unpredictable application performance – Since there are several VMs running on a single server with different kinds of applications, performance and response times can be hampered.
- Additional OS license – Compared to the traditional desktop computing procedure, where you need to pay for only one OS license for each PC, here you have to pay for two licenses – one for the VM and the other for the thin client that helps you view your desktop.
- Incompetent application support – Application virtualization requires a great deal of packaging and sequential levels, which can be time-consuming and could severely affect cost and savings.
- Defective image management – The VMs are time consuming procedures as they have to be built each day by utilizing components that are centrally managed. Another disadvantage is that since they are not readily available all the time you have to store the VM on a disk at the end of each day, which further adds to the cost of management and storage.
- Deficient offline mobility – The HVD runs on a central server, not on the desktop device which is at the user’s disposal. So you cannot work once you are disconnected with the server. This can be a major disadvantage for the mobile workforce.
- Personalized application prohibition – VDI technology does not permit you to use and store the preferred application settings ,such as passwords, recently opened documents in Word or the history in your web browser.
Dynamic Virtual Desktops, or DVDs, provide client-hosted virtual desktop solutions facilitating mobile technology and allow you to access your desktop anytime, anywhere, with an added advantage of offline computing. The solutions provided enable fast deployment and seamless integration with the existing infrastructure thus reducing the costs and improving the performance of the applications. The workspace virtualization solutions are complementary to the VDI technology and help in the quick and easy transition of the traditional desktop computing environment onto the DaaS platform.
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