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FTRFS: A Fault-Tolerant Radiation-Robust Filesystem for Space Use

  • Christian M. FuchsEmail author
  • Martin Langer
  • Carsten Trinitis
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9017)

Abstract

A satellite’s on-board computer must guarantee integrity and recover degraded or damaged data over the entire duration of the spacecraft’s mission in an extreme, radiated environment. While redundancy and hardware-side voting can protect Magnetoresistive RAM well from device failure, more sophisticated software-side storage concepts are required if advanced operating systems are used. A combination of hardware and filesystem measures can thus drastically increase system dependability, even for missions with a very long duration. We present a novel POSIX-compatible filesystem implementation offering memory protection, checksumming and forward error correction.

Keywords

Dependability Data storage Filesystem Spacecraft Satellite Radiation MRAM Memory protection Failure Tolerance EDAC 

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Christian M. Fuchs
    • 1
    • 2
    Email author
  • Martin Langer
    • 2
  • Carsten Trinitis
    • 1
  1. 1.Chair for Computer Architecture and OrganizationTechnical University MunichMunichGermany
  2. 2.Institute for AstronauticsTechnical University MunichMunichGermany

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