Virtualization allows organizations to reduce hardware costs and improve efficiency by running multiple virtual machines on a single physical server. This allows applications to be isolated from one another while sharing common resources. Virtualization provides benefits like faster deployment times, reduced maintenance costs, increased availability, and better performance. While virtualization introduces dependencies on vendors, it provides clear returns on investment for testing environments through lower costs and faster setup times.

1. Virtualization in Computer world

11. It continues the common theme of abstracting the service or application away from its physical environment, enabling it to exist and run in any location. Virtualization enables the co-existence of applications on the same physical environment by encapsulating them so that everything they need to run is available to them within a virtual environment. Example: Install and Publish a retail banking application on a CITRIX server kept somewhere at California. Now Tellers would use this application from there on system by contacting to the California server. Application would run on individual systems, however all the data would be saved at California server location. This ensures the security as well as less number of application to be installed. Software Virtualization

14. Case Study

15. Stage 1 - in an organization a software QA professional initially adopt VMM and begin to build a library of test images. He uses NAS box to save the created virtual OS images. Stage 2 - Later the organization Expands adoption of Virtualization technology and deploys Lab Manager against a Desktop Infrastructure, the images developed in VMM can be uploaded to Lab Manager and shared with other team members. Stage 3 - If further team expands, Virtual Center is then added to the mix, systems is tested and integration in Lab Manager can be cloned or “promoted “to a staging environment in Virtual Center. Henceforth, after acceptance of this solution, similar environment can be deployed to production environment. Cont…

16. Note: This data is from a IT project having 10 resources. Sr. No. Task No. of PCs Testing Environment Setup Time on each test machine (in minutes) Test Lab Environment Setup Time( 10 m/c) (in minutes) Manual Virtualization Manual Virtualization 1 OS installation 10 35 35 350 35 2 Microsoft Office 10 15 15 150 15 3 Visual Studio 5 90 90 450 90 4 SQL server 2003/2005 5 15 15 75 15 5 Upgrade IE 10 15 15 150 15 6 Automation Testing Tool 5 60 60 300 60 7 Application 10 30 30 300 30 8 Installation of VM Server 10 0 10 0 100 9 Copy VM 10 0 10 0 100 Total 1775 460 Cycle 1 (Time for virtual Lab setup v manual)

17. Note: This data is from a IT project having 10 resources. Sr. No. Task No. of PCs Testing Environment Setup Time ( Minutes ) Manual Virtualization Manual Virtualization 1 OS installation 10 35 35 350 0 2 Microsoft Office 10 15 15 150 3 Visual Studio 5 90 90 450 4 SQL server 2003/2005 5 15 15 75 5 Upgrade IE 10 15 15 150 6 Automation Testing Tool 5 60 60 300 7 Application 10 30 30 300 8 Installation of VM Server 10 0 10 0 100 9 Copy VM 10 0 10 0 100 Total 1775 200 Cycle 2 (Time for virtual Lab setup v manual)

18. Time required for Manual v Virtualization Process

19. Note: This table shows the data from a project, with 10 resources. Higher the number of PC required for the project, more would be the ROI. Task Manual Installation Installation using virtualization No of Persons 10 10 Systems required 20 10 Installation Time (mins) 1775 260 Cost $ 21000 $ 14100 % ROI 32.85% ROI Calculations

24. Virtualization in Computer world