Paper Info
Title
Highly reliable two-dimensional RAID arrays for archival storage
Abstract
We present a two-dimensional RAID architecture that is specifically tailored to the needs of archival storage systems. Our proposal starts with a fairly conventional two-dimensional RAID architecture where each disk belongs to exactly one horizontal and one vertical RAID level 4 stripe. Once the array has been populated, we add a superparity device that contains the exclusive OR of all the contents of all horizontal-or vertical-parity disks. The new organization tolerates all triple disk failures and nearly all quadruple and quintuple disk failures. As a result, it provides mean times to data loss (MTTDLs) more than a hundred times better than those of sets of RAID level 6 stripes with equal capacity and similar parity overhead.
Year
DOI
Venue
2012
10.1109/PCCC.2012.6407774
Performance Computing and Communications Conference
Keywords
Field
DocType
disc drives,parallel architectures,MTTDL,RAID architecture,archival storage systems,highly reliable two dimensional RAID arrays,horizontal-or vertical-parity disks,mean times to data loss,quadruple disk failures,quintuple disk failures,redundant array of independent disks,RAID arrays,disk arrays,fault-tolerance,storage system reliability
Non-standard RAID levels,Computer science,Parallel computing,Standard RAID levels,Real-time computing,Disk mirroring,RAID,Disk Data Format,Disk array controller,Parity drive,Nested RAID levels
Conference
ISSN
ISBN
Citations 
1097-2641
978-1-4673-4881-2
9
PageRank 
References 
Authors
0.55
7
4
Name
Order
Citations
PageRank
Jehan-françois Pâris1510265.03
Thomas J. E. Schwarz219024.56
Ahmed Amer3365.67
Darrell D. E. Long43111536.40