You can configure storage for packages, Writable Volumes, AppStacks (2.x), and Writable Volumes (2.x) by specifying the default storage and template paths. You can also configure VHD In-Guest storage to use with App Volumes.
For more information about configuring the VHD In-Guest storage, see Configure and Register the Machine Manager.
In App Volumes, a template is a .vmdk or .vhd file which can be used to create application packages, AppStacks, or Writable Volumes. In certain scenarios, you might have to upload the template to a datastore or a file share. For more information about App Volumes templates, see Understanding Templates used in App Volumes. For more information about uploading templates, see Upload Templates.