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Semi-mirror : Performance Improvement of Mirroring for Heterogeneous Storage Environments
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 염헌영 | - |
dc.contributor.author | 조완희 | - |
dc.date.accessioned | 2019-06-25T16:29:27Z | - |
dc.date.available | 2019-06-25T16:29:27Z | - |
dc.date.issued | 2012-02 | - |
dc.identifier.other | 000000002227 | - |
dc.identifier.uri | https://hdl.handle.net/10371/155507 | - |
dc.identifier.uri | http://dcollection.snu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000002227 | - |
dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 전기·컴퓨터공학부, 2012. 2. 염헌영. | - |
dc.description.abstract | A Solid State Drive (SSD) is a storage device that has the advantages of high
speed and low power consumption, but that is more expensive than the Hard Disk Drive (HDD). A recently developed high-performance storage server combines the features of an SSD and an HDD, containing a large HDD and a smaller SSD cache to improve system performance of frequently accessed files. However, existing mirroring techniques such as RAID-1 between an SSD and a HDD are not suitable for write-intensive workloads because of the slow HDDs random write performance. Addressing this issue, this paper presents a new mirroring technique, named semi-mirror, built on top of Linuxs device mapper architecture. It has three characteristics. First, it exploits the HDD bandwidth in append-only fashion. Second, it offers the same availability and reliability as existing mirroring techniques. Lastly, in the case of power or mechanical failure of the primary device, semi-mirror offers a recovery process, making a copy from the mirror device (HDD) to the primary device (SSD). Semi-mirror shows 26 times higher performance than dm-raid1 in case of random write in IOzone, and it leads to 5-6 times performance improvement in TPC-C. | - |
dc.format.extent | 39 | - |
dc.language.iso | eng | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject.ddc | 621.3 | - |
dc.title | Semi-mirror : Performance Improvement of Mirroring for Heterogeneous Storage Environments | - |
dc.type | Thesis | - |
dc.type | Dissertation | - |
dc.description.degree | Master | - |
dc.contributor.affiliation | 전기·컴퓨터공학부 | - |
dc.date.awarded | 2012-02 | - |
dc.contributor.major | 컴퓨터공학과 | - |
dc.identifier.holdings | 000000000006▲000000000011▲000000002227▲ | - |
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