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Semi-mirror : Performance Improvement of Mirroring for Heterogeneous Storage Environments

DC Field Value Language
dc.contributor.advisor염헌영-
dc.contributor.author조완희-
dc.date.accessioned2019-06-25T16:29:27Z-
dc.date.available2019-06-25T16:29:27Z-
dc.date.issued2012-02-
dc.identifier.other000000002227-
dc.identifier.urihttps://hdl.handle.net/10371/155507-
dc.identifier.urihttp://dcollection.snu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000002227-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 전기·컴퓨터공학부, 2012. 2. 염헌영.-
dc.description.abstractA 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.
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dc.format.extent39-
dc.language.isoeng-
dc.publisher서울대학교 대학원-
dc.subject.ddc621.3-
dc.titleSemi-mirror : Performance Improvement of Mirroring for Heterogeneous Storage Environments-
dc.typeThesis-
dc.typeDissertation-
dc.description.degreeMaster-
dc.contributor.affiliation전기·컴퓨터공학부-
dc.date.awarded2012-02-
dc.contributor.major컴퓨터공학과-
dc.identifier.holdings000000000006▲000000000011▲000000002227▲-
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