Metrics to use on the road to HSM

While the mechanisms of hierarchical storage management may be well understood, the metrics used to measure the effectiveness of HSM and the variables used to justify purchasing an HSM system are not well defined. Moreover, there are some potholes on the road to configuring an efficient HSM system. This paper suggests a set of steps from justifying the expense to making sure HSM integrates well with the other storage management functions already in place.