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.
