Performance and reliability in disk arrays tutorial
Garth A. Gibson · International Conference on Parallel and Distributed Information Systems · 1993
Recent advances in processor and memory technology have given rise to increases in computational performance that far outstrip increases in the performance of secondary storage technology. Coupled with emerging small-disk technology, disk arrays provide the cost, volume, and capacity of traditional disk subsystems but, by leveraging parallelism, many times their performance. This tutorial will describe the effect of various configurations of data striping on I/O performance.Unfortunately, arrays of small disks may have much higher failure rates than the single large disks they replace. Redundant Arrays of Inexpensive Disks (RAID) use simple redundancy schemes to provide high data reliability. This tutorial will describe models for the performance costs and reliability enhancements of various configurations of redundant disk arrays.