An Efficient Data Layout Scheme for Multi-Disks Continuous Media Servers |
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Authors: | Huang Yueh-Min Tsao Shiao-Li |
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Affiliation: | (1) Department of Engineering Science, National Cheng-Kung University, Tainan, Taiwan, R.O.C |
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Abstract: | ![]() Recently, zoning technique has been widely applied to disks to increase their capacities. Under the technique, an interesting feature of a disk is that there are a number of various bandwidths on it. Herein, a novel data layout scheme called cluster-pairing on efficiently exploiting this feature for continuous media (CM) servers is proposed. We first applied track-pairing method between a pair of homogeneous disks, and then partitioned each disk into a same number of clusters to facilitate the retrieval of region-based data placement. The proposed method can take the advantages of track-pairing and region-based data placement schemes to fully utilize the various bandwidths from zoned-disks and meanwhile reduce the seek time overhead. According to the simulation results, the disk throughput after applying our approach can be promoted by 35% to 65% than that of the traditional data striping strategies, 10% to 30% than that of region-based data placement method, and about 10% than that of track-pairing scheme. And the wasted storage space is less than 1% which is negligible in terms of the improvement of the disk throughput. |
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Keywords: | data placement zoned-disk data striping continuous media server video server |
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