A Comparison Of High-Availability Media Recovery Techniques

@inproceedings{Copeland1989ACO,
  title={A Comparison Of High-Availability Media Recovery Techniques},
  author={George P. Copeland and Tom W. Keller},
  booktitle={SIGMOD Conference},
  year={1989}
}
We compare two high-availability techniques for recovery from media failures in database systems. Both techniques achieve high availability by having two copies of all data and indexes, so that recovery is immediate. “Mirrored declustering” spreads two copies of each relation across two identical sets of disks. “Interleaved declustering” spreads two copies of each relation across one set of disks while keeping both copies of each tuple on separate disks. Both techniques pay the same costs of… CONTINUE READING
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