Abstract
Partial MDS (PMDS) codes are erasure codes combining local (row) correction with global additional correction of entries, while sector-disk (SD) codes are erasure codes that address the mixed failure mode of current redundant arrays of independent disk (RAID) systems. It has been an open problem to construct general codes that have the PMDS and the SD properties, and previous work has relied on Monte-Carlo searches. In this paper, we present a general construction that addresses the case of any number of failed disks and in addition, two erased sectors. The construction requires a modest field size. This result generalizes previous constructions extending RAID 5 and RAID 6.
| Original language | American English |
|---|---|
| Article number | 7422796 |
| Pages (from-to) | 2673-2681 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Information Theory |
| Volume | 62 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 May 2016 |
Keywords
- Partial MDS codes
- locally recoverable codes
- maximally recoverable codes
- sector-disk codes
All Science Journal Classification (ASJC) codes
- Information Systems
- Computer Science Applications
- Library and Information Sciences
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