单项选择题 A customer RFP requires installation of an open system SAN and migration of 40 TB currently residing on ten UNIX servers （on internal server disk）. The Service Level Agreement （SLA） requires no more than five minutes per week of planned downtime for backup.  Which IBM System Storage solution is the most cost effective（）

单项选择题 A customer has a mission-critical application with redundant fabrics. The customer plans to replace older EMC Symmetrix 8830 systems with an IBM System Storage DS8700 and an IBM SAN Volume Controller （SVC）.  Which statement best describes the way to minimize the impact of data migration on the production environment（）

单项选择题 mainframe customer would like to receive a proposal for a mainframe storage system with 120 TB raw capacity. The  mainframe server load is not too high， and they need hard disk drives with the lowest possible power consumption to keep operating costs low. The customer will not increase the capacity of their mainframe applications in the future but rather invest later into their System p servers.  Which of the following solutions best meets these requirements at the lowest cost（）