单项选择题 A customer has two single cluster IBM TS7700 Virtualization Engines at the same site. The customer wants to move one to a remote site and set up a grid configuration with the two clusters. The customer has fibre between the two sites. What is the most important factor to consider when planning the new configuration?（）

单项选择题 When does the warranty of the XIV Storage System start? （）

单项选择题 When designing an expansion within the same data center, when is a pre-sales TDA absolutely required by IBM?（）