What should the technical specialist recommend to improve the performance and add capacity to the current environment?

A customer stores security camera footage and currently has maximized the IBM Storwize V7000 Gen2 clustered system with 960 disk drives. The customer is currently growing at 10% a year and needs more storage capacity. The customer would also like to keep the same feature and functions.

What should the technical specialist recommend to improve the performance and add capacity to the current environment?
A . Add virtualized external storage
B . Add compression license and cards
C . Add IBM SAN Volume Controller with IBM Spectrum Virtualize software and additional storage
D . Upgrade to an IBM Storwize V7000 Unified and add additional storage

Answer: C