Paper Info
Title
Double parity sparing for performance improvement in disk arrays
Abstract
RAID level 5 disk arrays provide highly reliable, cost effective secondary storage with high performance for reads and large writes. Small writes, however, cause the degradation of their performance, since small writes need additional disk accesses to update parity data. There have been many studies to overcome this problem. In this paper, we propose a new technique, double parity sparing, which is a variation of disk array with a spare. To improve the parity update process, the proposed scheme uses a spare block and a parity block as two available parity blocks. We present results from simulations to show that the proposed scheme offers better performance while there is no failure in disk arrays
Year
DOI
Venue
1996
10.1109/ICPADS.1996.517560
ICPADS
Keywords
Field
DocType
disk array,degradation,additional disk access,storage management,parity update process,performance improvement,double parity,better performance,parity data,proposed scheme,magnetic disc storage,disk arrays,small writes,available parity block,performance evaluation,parity block,double parity sparing,cost effectiveness,computer science,throughput
Disk array,Spare part,Computer science,Parallel computing,Standard RAID levels,Real-time computing,Storage management,Computer hardware,Parity (mathematics),Auxiliary memory,Performance improvement
Conference
ISBN
Citations 
PageRank 
0-8186-7267-6
2
0.60
References 
Authors
7
2
Name
Order
Citations
PageRank
Min-Young Lee13323.26
Myong-Soon Park234745.95