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Efficient Striping Techniques for Multimedia File Servers

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by Prashant J. Shenoy , Harrick M. Vin
Citations:23 - 4 self
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BibTeX

@MISC{Shenoy_efficientstriping,
    author = {Prashant J. Shenoy and Harrick M. Vin},
    title = { Efficient Striping Techniques for Multimedia File Servers},
    year = {}
}

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Abstract

The performance of striped disk arrays is governed by two parameters: the stripe unit size and the degree of striping. In this paper, we describe techniques for determining the stripe unit size and degree of striping for disk arrays storing variable bit rate continuous media data. We present an analytical model that uses the server configuration and the workload characteristics to predict the load on the most heavily loaded disk in redundant and non-redundant arrays. We then use the model to determine the optimal stripe unit size for different workloads. We also use the model to study the effect of various system parameters on the optimal stripe unit size. To determine the degree of striping, we first demonstrate that striping a continuous media stream across all disks in the array causes the number of clients supported to increase sub-linearly with increase in the number of disks. To maximize the number of clients supported in large arrays, we propose a technique that partitions a disk array and stripes each media stream across a single partition. Since load imbalance can occur in such partitioned arrays, we present an analytical model to compute the imbalance across partitions in the array. We then use the model to determine a partition size that minimizes the load imbalance, and hence, maximizes the number of clients supported by the array.

Citations

208 Supporting stored video: reducing rate variability and end-to-end resource requirements through optimal smoothing - Salehi, Zhang, et al. - 1996
163 Staggered Striping in Multimedia Information Systems - Berson, Ghandeharizadeh, et al. - 1994
125 Maximizing Performance in a Striped Disk Array - Chen, Patterson - 1990
80 Design and Analysis of a Grouped Sweeping Scheme for Multimedia Storage Management - Yu, Chen, et al. - 1992
77 An Online Video Placement Policy based on Bandwidth toSpace Ratio (bsr - Dan, Sitaram - 1995
76 A Case for Redundant Arrays - Patterson, Gibson, et al. - 1988
71 An analytic performance model of disk arrays - Lee, Katz - 1993
55 An Evaluation of Redundant Arrays of Disks using an Amdahl 5890 - Chen - 1990
45 Providing VCR capabilities in large-scale video servers - Dey-Sircar, Salehi, et al. - 1994
41 Analysis of Striping Techniques in Robotic Storage Libraries - Golubchnik, Muntz, et al. - 1995
40 Optimizing the Placement of Multimedia Objects on Disk Arrays - Vin, Rao, et al. - 1995
39 Striping in a RAID Level 5 Disk Array - Chen, Lee - 1995
32 Performance of A Mass Storage System for Video-On-Demand - Hsieh, Lin, et al. - 1995
28 Striping in Multi-disk Video Servers - Ghandeharizadeh, Kim - 1995
21 Cost analyses for VBR video servers - Chang, Zakhor
21 Disk striping and block replication algorithms for video file servers - Flynn, Tetzlaff - 1996
19 Disk Striping in Video Server Environments - Ozden, Rastogi, et al. - 1996
14 Pipelined Disk Arrays for Digital Movie Retrieval - Cohen, Burkhard, et al. - 1995
1 DASD DancingA Disk Load Balancing Optimization Scheme for Video-on-Demand Computer Systems - Wolf, Yu, et al. - 1995
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