4. Increased Complexity: 
Physical severs have existed for a long time now and this has made the IT professionals used to the difficulties that they faced with these servers. Virtualization brings with itself a new set of complexities and to address them one needs to understand the dynamics of virtualized servers. This will help them in getting to the root cause of the problem and fix them in minimal duration. Without adapting this approach, it will only become more difficult to handle these issues.

5. Requirement of New Management Tools:
The advantages that virtualization brings with itself can only be utilized if one has a proper set of tools. The default tools that come with the virtualization solution are often not enough and additional tools are required for utilities such as disaster recovery. Acquiring these tools requires both, the money to purchase them and the time to learn to use these utilities.

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