• Publications
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EVENODD: An Efficient Scheme for Tolerating Double Disk Failures in RAID Architectures
TLDR
A novel method for tolerating up to two disk failures in RAID architectures based on Reed-Solomon error-correcting codes, which can be used in any system requiring large symbols and relatively short codes, for instance, in multitrack magnetic recording.
EVENODD: an optimal scheme for tolerating double disk failures in RAID architectures
TLDR
E EVENODD is the first known scheme for tolerating double disk failures that is optimal with regard to both storage and performance and can be implemented on standard RAID-5 controllers without any hardware changes.
A new intra-disk redundancy scheme for high-reliability RAID storage systems in the presence of unrecoverable errors
TLDR
An efficient intradisk redundancy scheme based on an interleaved parity-check coding scheme provides the same reliability as the optimum, albeit more complex, Reed--Solomon coding scheme, which incurs only negligible I/O performance degradation.
Disk array storage system reliability
  • W. Burkhard, J. Menon
  • Engineering
    FTCS-23 The Twenty-Third International Symposium…
  • 22 June 1993
TLDR
The authors consider various alternatives - improved MTBF and MTTR times as well as smaller reliability groups and increased numbers of check disks per group - to obtain the necessary improved reliability.
IBM Storage Tank - A heterogeneous scalable SAN file system
TLDR
The goals of the Storage Tank project, the architecture used to achieve these goals, and the current and future plans for the technology are explored.
A performance comparison of RAID-5 and log-structured arrays
  • J. Menon
  • Computer Science
    Proceedings of the Fourth IEEE International…
  • 2 August 1995
TLDR
This paper compares the performance of the well-known RAID-5 arrays to that of log-structured arrays (LSA), on transaction-processing workloads and looks at sensitivity of LSA performance to amount of free space on the physical disks and to the compression ratio achieved.
A taxonomy of parallel sorting
TLDR
This paper analyzes the evolution of research on parallel sorting, from the earliest sorting networks to the shared memory algorithms and the VLSI sorters, and proposes a taxonomy of parallel sorting that includes a broad range of array and file sorting algorithms.
Comparison of sparing alternatives for disk arrays
This paper explores how choice of sparing methods impacts the performance of RAID level 5 (or parity striped) disk arrays. The three sparing methods examined are dedicated sparing, distributed
EVENODD: an optimal scheme for tolerating double disk failures in RAID architectures
TLDR
E EVENODD is the first known scheme for tolerating double disk failures that is optimal with regard to both storage and performance and can be implemented on standard RAID-5 controllers without any hardware changes.
Performance of RAID5 disk arrays with read and write caching
  • J. Menon
  • Computer Science
    Distributed and Parallel Databases
  • 1 July 1994
TLDR
Analytical models and evaluate the performance of RAID5 disk arrays in normal mode, in degraded mode, and in rebuild mode, finding that if the goal is to minimize the average response time of a subsystem in degraded and rebuild modes, it is better to use small arrays rather than large arrays in the subsystem.
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