Definition of RPO

A.
It is the maximum tolerable period in which data might be lost from an IT service due to a major
incident

B.
Time it takes to recover data

C.
How much data can be lost

Explanation:

Recovery point objective
http://en.wikipedia.org/wiki/Recovery_point_objective
It is the maximum tolerable period in which data might be lost from an IT service due to a major
incident.[1] The RPO gives systems designers a limit to work to. For instance, if the RPO is set to
4 hours, then in practice, offsite mirrored backups must be continuously maintained- a daily offsite
backup on tape will not suffice.