Efficient Region Layouts for Region-based Video Servers Employing Multi-zone Disks

in Sciences Citation Index(SCI), 科學引文索引資料庫(SCI)
標題Efficient Region Layouts for Region-based Video Servers Employing Multi-zone Disks
出版類型SCI(Sciences Citation Index)
AuthorsSheau-Ru Tong, 童曉儒
出版日期2004 / 1

This paper investigates the implementation of video servers employing multi-zone disks. A
multizone disk consists of a set of concentric disk zones with non-uniform storage capacities
and data transfer rates. Superimposing a customized region layout on the top of such a disk is
essential for facilitating the video server design and improving the disk resource utilization.
This paper develops theories concerning the optimal region layouts for implementing the
region-based data placement. Based on them, two efficient region layout algorithms are
proposed, namely, the free-π scheme and fixed-π scheme. The former can achieve better
resource utilization than the latter, but the latter requires a simpler timing control than the
former. Extension of the fixed-π scheme to performthe disk striping in a disk array platform
is also investigated. A spiral synchronization scheme is proposed to improve the system
scalability by alleviating the disk bus congestion problem, caused by variable data transfer
rates from individual disks. The analytical results reveal that the proposed schemes can
effectively customize region layouts to achieve 85–99% resource utilization. By considering
the region layout together with other design factors, an efficient configuration strategy is
proposed for building a cost-effective server subject to the performance requirements of a
target application.

期刊名稱The Computer Journal
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