RAID, as a popular technology to improve the performance and reliability of storage system, has been used widely in computer industry. Recently, the technique of designing data layout in order to fit the requirements of networked storage is becoming a new challenge in this field. In this paper, we present a double-objective Genetic Algorithm for parity declustering optimization in networked RAI...

Hong Jiang began his talk by discussing the importance of data recovery. Disk failures have become more common in RAID-structured storage systems. The improvement in disk capacity has far outpaced improvements in disk bandwidth, lengthening the overall RAID recovery time. Also, disk drive reliability has improved slowly, resulting in a very high overall failure rate in a large-scale RAID storag...

This paper describes the RAID algorithm, (Remote Automatic Incident Detection) designed to detect abnormal periods of traffic congestion existing over single inductive loop detectors (typically 2m by 1.5m). RAID identifies those detectors which show a critical increase in Average Loop-Occupancy Time Per Vehicle (ALOTPV) coinciding with a critical decrease in Average Time-Gap Between Vehicles (A...

This paper investigates the performance of redundant array of inexpensive disks (RAID) with a level of 5 by using a Markov model. Considering RAID systems cannot be adequately modeled using a single queuing model, we use four modes to model the RAID-5 system. The analytical model is verified by simulation through a Q+ simulation software package. The results obtained from the Markov model are v...

High-energy physics experiments are currently recording large amounts of data and in a few years will be recording prodigious quantities of data. New methods must be developed to handle this data and make analysis at universities possible. Grid Computing is one method; however, the data must be cached at the various Grid nodes. We examine some storage techniques that exploit recent developments...

High-energy physics experiments are currently recording large amounts of data and in a few years will be recording prodigious quantities of data. New methods must be developed to handle this data and make analysis at universities possible. Grid Computing is one method; however, the data must be cached at the various Grid nodes. We examine some storage techniques that exploit recent developments...

In this paper we explore the design of “Do-It-Yourself” RAIDs: RAID systems that can assembled by the end user from commercially available disks, enclosures, cables, racks, computers, and networks. We quantitatively evaluate the tradeoffs in cost, performance, and reliability of these DIY-RAID systems. Our principal result is an architecture that scales from 10s to 1000s of disks; we demonstrat...

The author considered both the direct effect and the moderator effect of role salience in the stress-strain relationship. In contrast to previous studies that have examined the effects of salience on well-being within specific social roles, the present study focused on the work-family interface. From a sample of 147 employed English women with children, the present results of the regression ana...