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2005
IEEE

Optimizing Prefetch in a Residential Gateway with Networked Storage Systems

10 years 10 months ago
Optimizing Prefetch in a Residential Gateway with Networked Storage Systems
VOD services require the storage system support with multiple disks. SCSI-based systems are usual choices. However, disks can be attached directly to networks these days. Fiber Channel Arbitrated Loop (FC-AL) is a leading networkaccessible storage interface. As a residential service gateway, the FC-AL-based servers enable the stable delivery of high quality video to thousands of clients between external service providers and local clients. We have observed that, even though they performs better than conventional SCSIbased systems, all the disks in FC-AL-based VOD servers utilize only a small portion of their caches to a similar degree due to FC-AL fairness arbitration algorithm. In this paper, we analyze the impact of prefetching on the performance of the FC-AL-based systems according to disk block/cache size. Analysis is also focused on how to find the optimal number of blocks transmitted to the FC-AL from the disk cache per FC-AL arbitration among multiple disks. Finally, simulatio...
Eunsam Kim, Jonathan C. L. Liu
Added 24 Jun 2010
Updated 24 Jun 2010
Type Conference
Year 2005
Where ICMCS
Authors Eunsam Kim, Jonathan C. L. Liu
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