Abstract
Despite the reliability of modern disks, recent studies have made it clear that a new class of faults, UndetectedDisk Errors (UDEs) also known as silent data corruption events, become a real challenge as storage capacity scales. While RAID systems have proven effective in protecting data from traditional disk failures, silent data corruption events remain a significant problem unaddressed by RAID. We present a fault model for UDEs, and a hybrid framework for simulating UDEs in large-scale systems. The framework combines a multi-resolution discrete event simulator with numerical solvers. Our implementation enables us to model arbitrary storage systems and workloads and estimate the rate of undetected data corruptions. We present results for several systems and workloads, from gigascale to petascale. These results indicate that corruption from UDEs is a significant problem in the absence of protection schemes and that such schemes dramatically decrease the rate of undetected data corruption.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International Conference on Dependable Systems and Networks |
| Pages | 83-92 |
| Number of pages | 10 |
| DOIs | |
| State | Published - Nov 26 2009 |
| Event | 2009 IEEE/IFIP International Conference on Dependable Systems and Networks, DSN 2009 - Lisbon, Portugal Duration: Jun 29 2009 → Jul 2 2009 |
Other
| Other | 2009 IEEE/IFIP International Conference on Dependable Systems and Networks, DSN 2009 |
|---|---|
| Country | Portugal |
| City | Lisbon |
| Period | 6/29/09 → 7/2/09 |
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Keywords
- Modeling
- Silent data corruption
- Simulation
- Undetected disk errors
ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Software
Cite this
Evaluating the impact of undetected disk errors in RAID systems. / Rozier, Eric W D; Belluomini, Wendy; Deenadhayalan, Veera; Hafner, Jim; Rao, K. K.; Zhou, Pin.
Proceedings of the International Conference on Dependable Systems and Networks. 2009. p. 83-92 5270353.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Evaluating the impact of undetected disk errors in RAID systems
AU - Rozier, Eric W D
AU - Belluomini, Wendy
AU - Deenadhayalan, Veera
AU - Hafner, Jim
AU - Rao, K. K.
AU - Zhou, Pin
PY - 2009/11/26
Y1 - 2009/11/26
N2 - Despite the reliability of modern disks, recent studies have made it clear that a new class of faults, UndetectedDisk Errors (UDEs) also known as silent data corruption events, become a real challenge as storage capacity scales. While RAID systems have proven effective in protecting data from traditional disk failures, silent data corruption events remain a significant problem unaddressed by RAID. We present a fault model for UDEs, and a hybrid framework for simulating UDEs in large-scale systems. The framework combines a multi-resolution discrete event simulator with numerical solvers. Our implementation enables us to model arbitrary storage systems and workloads and estimate the rate of undetected data corruptions. We present results for several systems and workloads, from gigascale to petascale. These results indicate that corruption from UDEs is a significant problem in the absence of protection schemes and that such schemes dramatically decrease the rate of undetected data corruption.
AB - Despite the reliability of modern disks, recent studies have made it clear that a new class of faults, UndetectedDisk Errors (UDEs) also known as silent data corruption events, become a real challenge as storage capacity scales. While RAID systems have proven effective in protecting data from traditional disk failures, silent data corruption events remain a significant problem unaddressed by RAID. We present a fault model for UDEs, and a hybrid framework for simulating UDEs in large-scale systems. The framework combines a multi-resolution discrete event simulator with numerical solvers. Our implementation enables us to model arbitrary storage systems and workloads and estimate the rate of undetected data corruptions. We present results for several systems and workloads, from gigascale to petascale. These results indicate that corruption from UDEs is a significant problem in the absence of protection schemes and that such schemes dramatically decrease the rate of undetected data corruption.
KW - Modeling
KW - Silent data corruption
KW - Simulation
KW - Undetected disk errors
UR - http://www.scopus.com/inward/record.url?scp=70450198064&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70450198064&partnerID=8YFLogxK
U2 - 10.1109/DSN.2009.5270353
DO - 10.1109/DSN.2009.5270353
M3 - Conference contribution
SN - 9781424444212
SP - 83
EP - 92
BT - Proceedings of the International Conference on Dependable Systems and Networks
ER -