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Multimedia Storage Management

Multimedia Storage Management. Sunil Prabhakar Assistant Professor Department of Computer Sciences Purdue University. Researchers. W. Aref (CS) A. Elmagarmid (CS) A. Ghafoor (ECE) R. L. Kashyap (ECE) M. Khan (ECE) S. Prabhakar (CS).

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Multimedia Storage Management

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  1. Multimedia Storage Management Sunil PrabhakarAssistant ProfessorDepartment of Computer SciencesPurdue University

  2. Researchers • W. Aref (CS) • A. Elmagarmid (CS) • A. Ghafoor (ECE) • R. L. Kashyap (ECE) • M. Khan (ECE) • S. Prabhakar (CS)

  3. On-Going Research Projects for Multimedia Storage Management • Efficient image storage • Disk placement schemes • Tertiary storage management • I/O scheduling and reliability for robotic libraries • Multimedia document management • Document placement techniques • I/O management Goal: improved performance

  4. Image Placement for Multiresolution Browsing Images decomposed into multiple resolutions using wavelets

  5. Image Placement on Disks • Content-based retrieval using browsing graphs or quantitative measures • Multidimensional data declustering for similarity queries • Designed and evaluated (through simulation and implementation) several efficient disk placement schemes

  6. Tertiary Storage Management • Scheduling and reliability for tertiary storage are critical issues. These issues arise due to high latency and rapid tape wear-out • Most scheduling work has focussed on single medium scheduling • Work on reliability has been limited to mirroring or RAIT

  7. Research Results for Tertiary Storage Management • Scheduling • Developed scheduling algorithms • Optimal for single drive libraries • Near-optimal for multiple drive libraries • Significant improvement over FCFS • Tape reliability • Tape Group Parity Protection • Lower storage overhead than mirroring • Better performance than RAIT

  8. Challenges for Multimedia Document Placement • Mixed media storage (audio, video, text, images) • Mixed media data placement techniques • Statistical techniques using access patterns • Document striping across multiple disks • Document clustering and allocation techniques for parallel disk arrays and clusters of networked servers

  9. Text Audio Image Text Text Image Video Text Audio Image Multimedia Browsing Graph Abomasum Omasum Reticulum Protozoa Esophagus Rumen Stomach Digestive System Small Intestine Salivary Glands Large Intestine

  10. I/O Management Issues • I/O channels between various levels of the storage hierarchy are limited resources • To ensure QoS at run-time intelligent I/O channel allocation schemes are needed. • Document profiles can be utilized for dynamic I/O channel allocation

  11. MICROBIAL FERMENTATION: Microbial fermentation is an anaerobic process Microbes live in a symbiotic existence with the host (e.g. Cow) Microbes do not have complete TCA cycle, volatile fatty acids (VFA) are byproducts of their anaerobic Exit Omasum Abomasum Reticulum Esophagus Bandwidth Protozoa Rumen Stomach Digestive System Small Intestine Salivary Glands Large Intestine Multimedia Browsing Graph Time Document Bandwidth Profile

  12. Related Work • Image storage • Chabot (UC Berkeley) • QBIC (IBM) • Multimedia storage • Fellini (Lucent) • Mitra (USC) • IBM (Phillip Yu et al) • NASD • Streaming RAID (Tobagi et al)

  13. Cluster Tertiary Storage Tertiary Storage Planned Multi-Level Storage Architecture Environments Clustered Server Architecture Parallel Disk Array Architecture RAID Multimedia Document Profiles & Traces Multimedia Document Profiles & Traces

  14. Experiments for Multi-Level Storage Architecture Environments Objective: Comparison between the two environments in terms of QoS guarantees • Real-time scheduling • Multimedia data placement schemes at different levels of the storage hierarchy • I/O channel management • Reliability • Scalability

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