Highly reliable two-dimensional RAID arrays for archival storage

  title={Highly reliable two-dimensional RAID arrays for archival storage},
  author={Jehan-François P{\^a}ris and Thomas J. E. Schwarz and Ahmed M Amer and Darrell D. E. Long},
  journal={2012 IEEE 31st International Performance Computing and Communications Conference (IPCCC)},
We present a two-dimensional RAID architecture that is specifically tailored to the needs of archival storage systems. Our proposal starts with a fairly conventional two-dimensional RAID architecture where each disk belongs to exactly one horizontal and one vertical RAID level 4 stripe. Once the array has been populated, we add a superparity device that contains the exclusive OR of all the contents of all horizontal-or vertical-parity disks. The new organization tolerates all triple disk… CONTINUE READING


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