单项选择题 A customer has 6.5 TB with 146 GB 15k disk drives on an IBM System Storage DS8700. They want to add 15 TB using 300 GB 15k disk drives. The customer is concerned about performance and wants to know if the DS8700 has the performance capability.  What is the appropriate way to  model the performance（）

单项选择题 A bank has requested proposals for a storage solution to upgrade their disaster recovery processes for their IBM System z， UNIX， and Microsoft Windows environment. The solution must simulate a multi-site environment and provide the customer the ability to evaluate Metro Mirror， Global Mirror， Global Mirror for z/OS， and FlashCopy. 120 TB physical capacity is required per site. Only Fibre Channel drives can be used.  Which solution best meets the specified requirements（）

单项选择题 A customer needs 40 TB for Tier 2 Information Lifecycle Management （ILM） data installed on the System z/VM. Their current data center is critically short of floor space.  Which of the following would satisfy the customer requirement（）