A client has a SAP production database with 10 TB of usable storage on a DS4700. The growthrate of the data is 50% per year. The majority of the data rapidly becomes reference data and isnot frequently accessed. The customer would like to implement a solution that would migrate thereference data to a less expensive disk. Which of the following would be the most cost effectivesolution?（）

A. Thin Provisioning, Easy Tier, FlashCopy 
B. FlashCopy, Fastback for Storwize, External Virtualization 
C. Easy Tier, TPC for Disk Midrange Edition, TPC for Replication 
D. TPC for Disk Midrange Edition, TPC for Replication, External Virtualization

A. IBM AIX 
B. Novell SUSE Linux 
C. Microsoft Windows 
D. Red Hat Enterprise Linux

A. a customer with CIFS, NFS and GPFS requirements 
B. a customer wanting to natively implement Easy Tier 
C. a customer who has large block sequential write requirements 
D. a customer who needs to consolidate multiple storage controllers under one managementinterface