Design And Implementation Of Linux Clustered Video Server

With the development of Computer System,the requirements for High Performance and High Available System are increasing. Parallel Computing is a more effective approach to satisfy the requirements other than developing and inventing faster and more stable hardware devices. As a kind of shortcut to parallel computing,cluster computing can supply scalable,high available system with high performance,which is considered as an effective solution for rebuilding existed high performance / availability servers and platforms. The cluster approach can achieve better scalability,stability and cost/ performance value than previous solutions.VSS (Video Service System) is a kind of system used to supply digital video service,which can satisfy people's daily requirements. VS (Video Server) locates at the core position of VSS,which can save and play digital video files. Traditional VS is implemented as single server,which lacks scalability and requires more cost. So it comes the choice of implementing such servers using cluster technology.In this paper,the VS implemented as Cluster architecture is called LCVS (Linux Clustered Video Server). LCVS is suitable for those digital VSS that can supply services similar to broadcast,such as NVoD (Near Video-on-Demand),DVB (Digital Video Broadcast),etc. LCVS can support 2 to 12 nodes,and it can satisfy the requirements of scalability,high performance and high availability. The reliable parallel file-system (VDFS) and middle-ware module (VD),video data management module (MM),Communication Management module (CM),Storage Management module and High Availability daemon module are designed and implemented as program modules in LCVS system.All of this paper's work has turned out that cluster computing approach is feasible. As a result,the LCVS is proved as a good solution for VS in dedicated VSS,which can meet the requirements for performance and stability.