Generally, any server that contains the source files for a software product and that is used to perform remote installations.
For example, if you want to perform remote installations of Microsoft Windows NT Workstation on client machines, you can copy the I386 and Drvlib folders from the CD onto a folder called NTWKS on your file server, and then share this folder.
When you copy files from the CD to a folder on the server, use the xcopy command or, if you are using Windows Explorer, be sure to first choose Options from the View menu and select Show All Files. Otherwise, some hidden files will not be copied, and installation will fail.