Efficient storage and retrieval methods for multimedia information

The input/output performance has always been the bottleneck problem of computer systems, and with multimedia applications, the problem has been intensified. Hierarchical storage systems provide extensive storage capacity for multimedia data at very economical cost, but the long access latency of tertiary storage devices makes them not attractive for multimedia systems. In this thesis, we present new storage and retrieval methods to handle multimedia data on hierarchical storage systems efficiently. First, we create a novel hierarchical storage organization to increase the storage system throughput. Second, we enhance the data migration method to reduce the multimedia stream response time. Third, we design a new bandwidth based placement method to store heterogeneous objects. Fourth, we demonstrate that disk performance is significantly enhanced using constant density recording disks. We have quantitatively analysed and compared the performance of magnetic disks and hierarchical storage systems in serving multimedia streams of requests. We have also earned out empirical studies which confirm our findings. Our new storage and retrieval methods are able to offer significant advantages and flexibility over existing methods.

Name dc:type.qualificationname

phd

Level dc:type.qualificationlevel

doctoral

Grantor dc:publisher.institution

Victoria University of Technology

Year dc:date.issued

1999

Author dc:creator

• Tse, Kwok Chung

• 0801 Artificial Intelligence and Image Processing
• 0806 Information Systems
• School of Engineering and Science

Language dc:language

en