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（）

单项选择题 A customer business requirement addresses data encryption implemented in tape and disk media. They plan to deploy a DS8700 to provide enterprise class storage and plan to configure the DS8700 with SSD and Fiber Channel disk drives.  Which statement is TRUE regarding disk encryption（）