Retain 3.x, 4.x
The storage path(s) is where you'll find your archive files, the indexes, license file, and Retain's backup of the indexes and the ASConfig.cfg. To find your Retain system's storage path, login to the Retain Server administration web interface (http://[ipaddress/DNS hostname]/RetainServer). Starting at the navigation pane on the left side under "Configuration", click on Server Configuration | Storage. Most customers leave it at the default setting under "Advanced Settings" of "Derive all file locations from the above base path", but you may want to click on that checkbox to have it expand to show all the paths.
The information shown in the Storage tab in the Server Configuration screen is all stored in the ASConfig.cfg.