The present invention provides a
hybrid central / distributed and tiered
video on demand (VOD) service network with tiered content structure. In particular, the present invention uses media servers located in both the headend
station and the hub stations. Set-top boxes generally would be supplied VOD services from the high-demand content media servers located in the hub
station nearest to the user. The central
media server located in the headend would be used as an installed
backup to the hub media servers; as the
primary source for lower demand VOD services and as the source of the real time, centrally encoded programs with PVR (personal video recorder) capabilities.By distributing the servers to the hub stations, the size of the
fiber transport network associated with delivering VOD services from the central headend
media server is reduced. The invention provides that each user has access to several
server ports located on at least two servers. Multiple paths and channels are available for
content distribution to each user, assuring high
system reliability and enhanced asset availability. Substantial cost benefits are derived from the reduced need for a large
content distribution network and the reduced storage capacity requirements for hub servers.