Power Management of MEMS-Based Storage Devices for Mobile Systems

M.G. Khatib, Pieter H. Hartel

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)
    54 Downloads (Pure)

    Abstract

    Because of its small form factor, high capacity, and expected low cost, MEMS-based storage is a suitable storage technology for mobile systems. MEMS-based storage devices should also be energy efficient for deployment in mobile systems. The problem is that MEMS-based storage devices are mechanical, and thus consume a large amount of energy when idle. Therefore, a power management (PM) policy is needed that maximizes energy saving while minimizing performance degradation. In this work, we quantitatively demonstrate the optimality of the fixed-timeout PM policy for MEMS-based storage devices. Because the media sled is suspended by springs across the head array in MEMS-based storage devices, we show that these devices (1) lack mechanical startup overhead and (2) exhibit small shutdown overhead. As a result, we show that the combination of a PM policy, that fixes the timeout in the range of 1--10~ms, and a shutdown policy, that exploits the springs, results in a near-optimal energy saving yet at a negligible loss in performance.
    Original languageUndefined
    Title of host publicationProceedings of the 8th ACM & IEEE International Conference on Compilers, Architecture, and Synthesis for Embedded Systems (CASES '08)
    Place of PublicationDanvers
    PublisherAssociation for Computing Machinery (ACM)
    Pages245-254
    Number of pages10
    ISBN (Print)978-1-60558-469-0
    DOIs
    Publication statusPublished - 22 Oct 2008
    Event8th ACM & IEEE International Conference on Compilers, Architecture, and Synthesis for Embedded Systems, CASES 2008 - Atlanta, United States
    Duration: 19 Oct 200824 Oct 2008
    Conference number: 8

    Publication series

    Name
    PublisherACM
    Number1

    Conference

    Conference8th ACM & IEEE International Conference on Compilers, Architecture, and Synthesis for Embedded Systems, CASES 2008
    Abbreviated titleCASES
    CountryUnited States
    CityAtlanta
    Period19/10/0824/10/08

    Keywords

    • EWI-13851
    • IR-65054
    • METIS-252076

    Cite this

    Khatib, M. G., & Hartel, P. H. (2008). Power Management of MEMS-Based Storage Devices for Mobile Systems. In Proceedings of the 8th ACM & IEEE International Conference on Compilers, Architecture, and Synthesis for Embedded Systems (CASES '08) (pp. 245-254). [10.1145/1450095.1450131] Danvers: Association for Computing Machinery (ACM). https://doi.org/10.1145/1450095.1450131