单项选择题 An IBM Business Partner suggests an IBM System Storage DS8000 to a customer with a SAN   that is now configured with an EMC Symmetrix subsystem disk.  The customer wants to determine if new HBAs and software upgrades are needed on the servers if the EMC storage is replaced by the DS8000 What document must be carefully read to help address the customer’s concerns（）

单项选择题 A customer needs a remote data copy， data migration， and off-site backup solution. The solution cannot impact application performance. The sites are over continental distances.  Which characteristic of DS8700 Global Mirror makes it a good fit for this customer（）

单项选择题 A current IBM System Storage DS8000 open systems customer needs a temporary copy of data that will be needed for only 12 hours.  Which DS8000 function best satisfies this requirement（）