Product Feature: General
There are two ways to do this.
You can either review the journal that corresponds to the AFP and add together the "number of pages" contained in the journal, or you can use fileinfo, a utility provided with Vault.
fileinfo.exe can be found in the vault installation path\server\tools folder, and you would run this against the page data file (drp), ie fileinfo name_of_drp.drp
If you want to run a check on how many pages you are ingesting generally, you can run the audit process. This is done by creating a non zero byte text file, name it to audit.adm and drop this into the process folder. This will create a CSV file in the vault installation path\server\info folder that will report how many pages have been loaded on a month by month basis. Please note that while the audit process is running, all other vault processes are suspended.
UPDATED: November 6, 2017