About determining the capacity licensing
The bpimagelist command is used to obtain image and fragment information for all backups for the past 90 days. The NetBackup Deployment Analyzer examines the image headers in the NetBackup catalog to determine the amount of data that NetBackup protects.
The data is measured in terabytes. The final total is the sum of terabytes for each client and policy combination that the analyzer examines. The Deployment Analyzer calculates the total data that needs to be protected. The analyzer uses the size of the last full backup for the last 90 days.
A day is defined as the 24 hour period from midnight to midnight. The analyzer sums all backups that started within that period. For some policy types, the analyzer considers the day with the largest total volume of protected data as an estimate of the approximate size of active data under protection for the client and policy.