A new storage network is being designed. Which of the following would be the MOST appropriate process to address storage planning?

A.
A disk to disk to tape grandfathering scheme so as to ensure that an appropriate backup scheme is in place.

B.
A tiered approach utilizing short term online, medium term near-line, and long term offline storage,

C.
A Virtual Tape Library with multi-path 10 to provide high availability connected via 10GBps SAN switches.

D.
Fixed data retention periods so that storage is rolled over based on an aging cycle.