Friendstore: cooperative online backup using trusted nodes

  • Authors:
  • Dinh Nguyen Tran;Frank Chiang;Jinyang Li

  • Affiliations:
  • New York University;New York University;New York University

  • Venue:
  • Proceedings of the 1st Workshop on Social Network Systems
  • Year:
  • 2008

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Abstract

Today, it is common for users to own more than tens of gigabytes of digital pictures, videos, experimental traces, etc. Although many users already back up such data on a cheap second disk, it is desirable to also seek off-site redundancies so that important data can survive threats such as natural disasters and operator mistakes. Commercial online backup service is expensive [1, 11]. An alternative solution is to use a peer-to-peer storage system. However, existing cooperative backup systems are plagued by two long-standing problems [3, 4, 9, 19, 27]: enforcing minimal availability from participating nodes, and ensuring that nodes storing others' backup data will not deny restore service in times of need.