establishing and measuring key performance indicators—KPIs. Typically, KPIs are
calculated on a periodic basis—monthly, weekly, quarterly, etc.

Transforming Data Into Bulk Storage

Another form of transformation is the movement of data from an active component to a
less active component. The movement is done when the probability of access for a given
unit of data drops. A typical strategy is to move the data as they age based on the
assumption that older data are accessed less frequently than current data.

There are however other occasions where the probability of access of data drops other
than through aging.

The movement of data from active storage to less active storage is seen in Fig. 3.1.7.

Chapter 3.1: Transformations in the End-State Architecture