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|Citation:||Kim, S.H.,Zhu, H.,Zimmermann, R. (2007). Zoned-RAID. ACM Transactions on Storage 3 (1). ScholarBank@NUS Repository. https://doi.org/10.1145/1227835.1227836|
|Abstract:||The RAID (Redundant Array of Inexpensive Disks) system has been widely used in practical storage applications for better performance, cost effectiveness, and reliability. This study proposes a novel variant of RAID named Zoned-RAID (Z-RAID). Z-RAID improves the performance of traditional RAID by utilizing the zoning property of modern disks which provides multiple zones with different data transfer rates within a disk. Z-RAID levels 1, 5, and 6 are introduced to enhance the effective data transfer rate of RAID levels 1, 5, and 6, respectively, by constraining the placement of data blocks in multizone disks. We apply the Z-RAID to a practical and popular application, streaming media server, that requires a high-data transfer rate as well as a high reliability. The analytical and experimental results demonstrate the superiority of Z-RAID to conventional RAID. Z-RAID provides a higher effective data transfer rate in normal mode with no disadvantage. In the presence of a disk failure, Z-RAID still performs as well as RAID. © 2007 ACM.|
|Source Title:||ACM Transactions on Storage|
|Appears in Collections:||Staff Publications|
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