Design of a Video Storage Server that Maximizes Concurrent Streams and Minimizes Initial Latency
Mah Pyeong Soo, Cho Chang Sik, Jin Yun Sook, Shin Gyu Sang · The Transactions of the Korea Information Processing Society · 1999
One of the most important functionality that commercial video storage servers should provide is to maximize the number of concurrent streams and to minimize the initial latency of new requests. In this paper, we propose a data placement scheme whose disk read unit size can be twice large than that of conventional striping methods. The proposed scheme can significantly increase the number of concurrent streams, since the ratio of rotational latency time is decreased and the disks are effectively utilized. The disk scheduling scheme we propose guarantees constant initial latency time. We also propose a procedural design method for a storage server by introducing the concept of allowed initial latency. The comparison with previous research shows that the proposed scheme provides better performance.