WMS File Data Source

When the source of the content streamed by your publishing point is a local file system, storage area network (SAN), or network-attached storage (NAS) device, Windows Media Services uses the WMS File Data Source plug-in to locate the content. This plug-in is able to read data from the NTFS, FAT, FAT32, or CIFS file systems and can use UNC addressing. If your content is stored by using an alternate file system, then you need to obtain a custom data source plug-in to enable Windows Media Services to read the data.