RAID 6 hardware acceleration

Michael Gilroy, J. Irvine, R.C. Atkinson

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Inexpensive, reliable hard disk storage is increasingly required in both businesses and the home. As disk capacities increase and multiple drives are combined in one system the probability of multiple disk failures increases. Through the adoption of RAID 6 the capability to recover from up to two simultaneous disk failures becomes available. In this paper, we present three different RAID 6 implementations each tailored to support different target applications and optimised to reduce overall hardware resource utilisation. We present an optimal Reed-Solomon based RAID 6 implementation for arrays of four disks. We also present the smallest in terms of hardware resource utilisation as well has the highest throughput RAID 6 hardware solution for disk arrays of up to 15 drives. Finally, we present an implementation supporting up to 255 disks in a single array.
Original languageEnglish
Article number43
Number of pages17
JournalACM Transactions in Embedded Computing Systems
Volume10
Issue number4
DOIs
Publication statusPublished - 30 Nov 2011

Keywords

  • embedded systems
  • system on chip
  • storage
  • RAID

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