A comprehensive research on key issues of the large-scale video server system for Video On Demand (VOD) client/server system is conducted based mainly on real time (rt)/non-real time (nrt) Variable Bit Rate or Constant Bit Rate (VBR/CBR) MPEG-2 MP@ML Signal Program Transport Stream (SPTS) for movies, and general architecture for storage, control, caching subsystems from Loosely Coupled Computer (LCC), Symmetric Multiple Processing (SMP), and Massively Parallel Processing (MPP) video server is conceptualized. Meanwhile, Redundant Array of Inexpensive Disks (RAID) storage system are presented and the centralized FCP/SAN huge storage technology is introduced in terms of its scalability, throughput, and connectivity performances. A comprehensive research on key issues of the large-scale video server system for Video On Demand (VOD) client / server system is conducted based mainly on real time (rt) / non-real time (nrt) Variable Bit Rate or Constant Bit Rate (VBR / CBR) MPEG-2 MP @ ML Signal Program Transport Stream (SPTS) for movies, and general architecture for storage, control, caching subsystems from Loosely Coupled Computer (LCC), Symmetric Multiple Processing (SMP), and Massively Parallel Processing The Redundant Array of Inexpensive Disks (RAID) storage system presents presented and the centralized FCP / SAN huge storage technology is introduced in terms of its scalability, throughput, and connectivity performances.