Title
Using device diversity to protect data against batch-correlated disk failures
Abstract
Batch-correlated failures result from the manifestation of a common defect in most, if not all, disk drives belonging to the same production batch. They are much less frequent than random disk failures but can cause catastrophic data losses even in systems that rely on mirroring or erasure codes to protect their data. We propose to reduce impact of batch-correlated failures on disk arrays by storing redundant copies of the same data on disks from different batches and, possibly, different manufacturers. The technique is especially attractive for mirrored organizations as it only requires that the two disks that hold copies of the same data never belong to the same production batch. We also show that even partial diversity can greatly increase the probability that the data stored in a RAID array will survive batch-correlated failures.
Year
DOI
Venue
2006
10.1145/1179559.1179568
StorageSS
Keywords
Field
DocType
raid array,common defect,different manufacturer,batch-correlated disk failure,device diversity,catastrophic data loss,production batch,batch-correlated failures result,different batch,batch-correlated failure,random disk failure,disk array,raid,disk mirroring,erasure code
Disk array,Computer science,Disk mirroring,RAID,Mirroring,Disk array controller,Erasure code,Distributed computing
Conference
ISBN
Citations 
PageRank 
1-59593-552-5
9
0.90
References 
Authors
8
2
Name
Order
Citations
PageRank
Jehan-françois Pâris1510265.03
Darrell D. E. Long23111536.40