Storage replication and layout in Video-On-Demand servers [chapter]

Scott D. Stoller, John D. DeTreville
1995 Lecture Notes in Computer Science  
We propose and analyze an architecture for storage servers in large Video on Demand (VoD) systems. We describe a method for distributing the collection of titles among the levels of the storage hierarchy, based on estimates of the mean demand for each title. The resulting distribution minimizes cost for a given level of performance. Since high availability is desirable in VoD systems, we consider the use of mirroring or parity-based redundancy ( a l a RAID) and estimate the e ect on the
more » ... cost and availability. In the very-large-scale storage systems needed for VoD, the placement of disk arrays on the pool of computers mu s t b e c hosen carefully to provide high availability for the least cost. We propose a strategy for arranging disk arrays on a pool of PCs our strategy is inspired by Holland and Gibson's work on parity declustering for RAID.
doi:10.1007/bfb0019284 fatcat:zfwwhp4odzdt3prcvff5mllqsm