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（）

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（）