– about enabling IT to be more flexible
What does virtualization mean ?
- Making information and IT service available anytime, anyplace.
- Allow IT to deliver new operating systems, provisioning new users, software maintenance, upgrades, patches, security fixes, application installations and general deskâ€side support without requiring months or years of effort.
- User data is not stored at the workstation, but it is stored at the server where it can be secured.
The Promise of Virtualization
- Virtual Desktop Infrastructure is an alternative desktop delivery model that allows users to access desktops running in the datacenter.
- Unlike Terminal Services, in VDI each user gets access to a personal desktop from any authorized device, thereby improving desktop flexibility.
- IT departments can take advantage of all the benefits of centralization, including centralized management of desktop workloads and improved business continuity.
The benefits of Virtualization
- Personal desktop at any PC when roaming
- Multiple users can use one workstation
- Rapid application deployment
- Tight user access control
- No training/education required
- Data security
- Workstation session Malware control
- Faster Implementation (compare to PCâ€™s)
- Minimal Capital expense required
Total Cost of Ownership (TCO)
- VDI does not reduce total cost of ownership (TCO) because it can represent a significant up-front investment in infrastructure, including hardware, software, storage, and network.
- Customers looking to reduce costs should deploy Application Virtualization and deploy VDI only where desktop flexibility is more important than cost savings.
- VDI should benefit non-mobile users and VDI requires constant connectivity to the network and cannot be used for mobile workers.
- Current VDI technology does not provide an optimum user experience for multimedia intensive applications.
Desktop Virtualization Technologies
These are the first steps that the IT department should consider given their relatively easier deployment and possibility of obtaining significant benefits in the short term with limited investments.
- User state virtualization
- Application virtualization
These powerful technologies allow for significant flexibility and efficiency but also require more sophisticated technical skills and a larger investment of IT resources.
- Client-Hosted Desktop Virtualizatio
- Server-Based Desktop Virtualization
- Microsoft Terminal Services Remote Desktops
- Virtualized Desktop Infrastructure (VDI)
User state virtualization
Which separates the user data and settings from any PC and enables IT to store them centrally while also making them accessible on any PC.
Isolates applications from each other and solves application to application compatibility issues by allowing applications to run together even though they may require the same resources from the OS. Moreover, application virtualization allows IT to store the application centrally and stream the application to a desktop based on user access.
Client Hosted Virtualization
separates the OS from the physical hardware and allows a single PC to run virtual machines side by side with the host OS.
Server-Based Desktop Virtualization allows the execution of an environment at one place and presentation of that environment or user interface at a different location. Server-based desktop virtualization technologies include:
Terminal Services use session virtualization to partition a single OS into multiple user sessions in a cost effective manner.
Virtualized Desktop Infrastructure (VDI) allows a single server to run many virtual machines.
Map of virtualization solutions (Microsoft)