You have been asked to design a new backup solution for ABC.com. After an initial analysis you
decide to implement a two-tier solution. The first tier is disk; the second tier is tape. A retention
period needs to be defined for the first tier that will determine when backup data will be moved to
the second tier. What is an important piece of information you need to consider when determining
this retention period?

A.
Recovery point objective

B.
Frequency of restore requests over time

C.
Available bandwidth

D.
Backup type