| 多媒体存储的自适应磁道复制 |
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| 引用本文： | 魏晨,肖必武,刘军.多媒体存储的自适应磁道复制[J].计算机工程,2005,31(21):204-205,211. |
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| 作者姓名： | 魏晨 肖必武 刘军 |
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| 作者单位： | 1. 中南林学院职院,长沙,410004
2. 国防科大计算机学院,长沙,410073 |
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| 基金项目： | 国家杰出青年科学基金资助项目（69825104）;国家“863”计划基金资助项目（2002AA1Z2101） |
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| 摘 要： | 提出将负载重的数据集中起来存储，并将这些数据在磁盘的多个地方进行复制，以减少寻道距离。讨论n-way自适应磁道复制和n-d-way自适应磁道复制，并进行了模拟试验，结果表明这些策略同仅仅将数据集中起来进行存储相比，能减少15％以上的寻道距离。
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| 关 键 词： | 寻道 磁道复制 平均寻道距离 多媒体 服务质量 |
| 文章编号： | 1000-3428（2005）21-0204-02 |
| 收稿时间： | 2004-09-21 |
| 修稿时间： | 2004-09-21 |
Adaptive Track Replica in Storing Multimedia Data |
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| WEI Chen,XIAO Biwu,LIU Jun.Adaptive Track Replica in Storing Multimedia Data[J].Computer Engineering,2005,31(21):204-205,211. |
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| Authors: | WEI Chen XIAO Biwu LIU Jun |
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| Affiliation: | 1. Professional College, Central South Forest University, Changsha 410004; 2. College of Computer, National University of Defense Technology, Changsha 410073 |
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| Abstract: | This paper proposes an adaptive track replica placement in disk to decrease average disk seeking distance. The strategy is that, first it rearranges those blocks, which are accessed highly frequently, and replicates them in the disk surface. It disscusses n-way adaptive track replica and n-d-way adaptive track replica, and makes lots of simulations, the results show that these strategies can decrease over 15% disk seeking distance, compared with only block rearrangement strategy. |
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| Keywords: | Seeking Cylinder replica Average seeking distance Multimedia Quality of service |
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