VMware vSphere Virtual computer systems 39 VMware 14 Certification 8 Electronic data processing personnel 8 Cloud computing 6 Computer Science 5 Engineering & Applied Sciences 5 Examinations 5 Computer security 4 Access control 3 Client/server computing 3 Computer networks 3 Computer storage devices 3 Operating systems (Computers) 3 Memory management (Computer science) 2 Microsoft Windows server Hyper-V 2 Application software 1 Backup 1 Business 1 COMPUTERS / Security / Networking 1 Data processing 1 Data recovery (Computer science) 1 Development 1 General and Others 1 Information Technology 1 Microsoft Hyper-V 1 Microsoft Virtual server 1 Recovery 1 Replication 1