You have been asked to design a new centralized backup solution for ABC.com. The customer
sent a list with the number of servers, amount of data, daily change rate, annual growth rate and
information about the backup policy (in terms of fulls, cumulatives and incrementals). The
customer wants to be able to satisfy its operational restores requests as quickly as possible. You
decided to design a backup to disk solution, directing all backups to disk then moving (staging) the

data to tape after operational needs are satisfied. What is an important piece of information you
will need to analyze in order to define the point (retention period on disk) where backups will be
moved to tape?

A.
Amount of storage space used over time

B.
RPO

C.
Percentage of restore requests over time

D.
Backup Window