The default spool directory is set up during installation of the Virtual Print Driver, or later via the Virtual Print Driver configuration application. The default spool directory must be the same location for each remote session, as it temporarily holds image files that are being imported into OnBase either immediately or at a later processing period. If the location of the spool directory changes from session to session, files spooled to be processed later may appear to be missing, unless the session is established on the same Remote Desktop Server.
In a standard environment, the default spool directory is located in the C: directory of the workstation. However, in a virtualization environment, C: is located on the server itself, not on the workstation of the client establishing a session with the Remote Desktop Server. This means that if C: is used as the location of the default spool directory in a virtualization environment, it may not actually be the same location every time when a user establishes a session, depending on the server in the server farm with which the user establishes the session.
It is considered a best practice to set the default spool directory to be the UNC location of a specific folder on a dedicated file server outside the server farm, so that the same folder is always used no matter which server is used to establish the remote session. For example, instead of configuring the default spool directory at C:\VirtualPrinter, configure it to use a file server instead: \\FileServer\VirtualPrinter.
You can also use a mapped home drive as the location of the default spool directory (e.g., Y:\VirtualPrinter). The mapped home folder must exist in the home drive of every user with access to the Virtual Print Driver, and must have the same name.
However, if you intend to share the Virtual Print Driver default spool directory across users or with users outside of the remote session, the mapped home drive spool directory cannot be used. For more information on mapped home drives, see File Storage Locations.