
76 percent of respondents who have implemented server virtualization said concern about performance was a large factor when it came to moving business-critical applications to virtualized servers.

Of those who have implemented private or hybrid clouds, 72 percent said performance was a significant or extreme challenge.

The smallest gap between expectation and realization was with the most mature technology –server virtualization, with a 4 percent gap between goals and reality.

The difference between expectation and reality in storage virtualization was 33 percent.

The difference between desktop/endpoint virtualization expectations and realization was 26 percent.

Private storage-as-a-service saw the gap between expectations and realization at 37 percent.

For private/hybrid cloud computing the difference between expectations and realization was 32 percent.

At least 50 percent of respondents rely quite a bit or completely on outside service providers, whether those providers are vendors, resellers or managed service providers.