ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD
Due to the rapid development of flash memory, SSD is considered to be the replacement of HDD in the storage market. Although SSD retains several promising characteristics, such as high random I/O performance and nonvolatility, its high expense per capacity is the main obstacle in replacing HDD in al...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/658161 |
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| author | Jaechun No Sung-Soon Park Cheol-Su Lim |
| author_facet | Jaechun No Sung-Soon Park Cheol-Su Lim |
| author_sort | Jaechun No |
| collection | DOAJ |
| description | Due to the rapid development of flash memory, SSD is considered to be the replacement of HDD in the storage market. Although SSD retains several promising characteristics, such as high random I/O performance and nonvolatility, its high expense per capacity is the main obstacle in replacing HDD in all storage solutions. An alternative is to provide a hybrid structure where a small portion of SSD address space is combined with the much larger HDD address space. In such a structure, maximizing the space utilization of SSD in a cost-effective way is extremely important to generate high I/O performance. We developed ReHypar (recursive hybrid chunk partitioning) that enables improving the space utilization of SSD in the hybrid structure. The first objective of ReHypar is to mitigate the fragmentation overhead of SSD address space, by reusing the remaining free space of I/O units as much as possible. Furthermore, ReHypar allows defining several, logical data sections in SSD address space, with each of those sections being configured with the different I/O unit. We integrated ReHypar with ext2 and ext4 and evaluated it using two public benchmarks including IOzone and Postmark. |
| format | Article |
| id | doaj-art-90de40e2b55349dca8046d6db8b31433 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-90de40e2b55349dca8046d6db8b314332025-02-03T05:59:15ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/658161658161ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSDJaechun No0Sung-Soon Park1Cheol-Su Lim2College of Electronics and Information Engineering, Sejong University, 98 Gunja-Dong, Gwangjin-Gu, Seoul 143-747, Republic of KoreaDepartment of Computer Engineering, Anyang University and Gluesys Co. LTD, Anyang 5-Dong, Manan-Gu, Anyang 430-714, Republic of KoreaDepartment of Computer Engineering, Seokyeong University, 16-1 Jungneung-Dong, Sungbuk-Gu, Seoul 136-704, Republic of KoreaDue to the rapid development of flash memory, SSD is considered to be the replacement of HDD in the storage market. Although SSD retains several promising characteristics, such as high random I/O performance and nonvolatility, its high expense per capacity is the main obstacle in replacing HDD in all storage solutions. An alternative is to provide a hybrid structure where a small portion of SSD address space is combined with the much larger HDD address space. In such a structure, maximizing the space utilization of SSD in a cost-effective way is extremely important to generate high I/O performance. We developed ReHypar (recursive hybrid chunk partitioning) that enables improving the space utilization of SSD in the hybrid structure. The first objective of ReHypar is to mitigate the fragmentation overhead of SSD address space, by reusing the remaining free space of I/O units as much as possible. Furthermore, ReHypar allows defining several, logical data sections in SSD address space, with each of those sections being configured with the different I/O unit. We integrated ReHypar with ext2 and ext4 and evaluated it using two public benchmarks including IOzone and Postmark.http://dx.doi.org/10.1155/2014/658161 |
| spellingShingle | Jaechun No Sung-Soon Park Cheol-Su Lim ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD The Scientific World Journal |
| title | ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD |
| title_full | ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD |
| title_fullStr | ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD |
| title_full_unstemmed | ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD |
| title_short | ReHypar: A Recursive Hybrid Chunk Partitioning Method Using NAND-Flash Memory SSD |
| title_sort | rehypar a recursive hybrid chunk partitioning method using nand flash memory ssd |
| url | http://dx.doi.org/10.1155/2014/658161 |
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