Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Hong, Duwon | - |
dc.contributor.author | Ha, Keonsoo | - |
dc.contributor.author | Ko, Minseok | - |
dc.contributor.author | Chun, Myoungjun | - |
dc.contributor.author | Kim, Yoona | - |
dc.contributor.author | Lee, Sungjin | - |
dc.contributor.author | Kim, Jihong | - |
dc.date.accessioned | 2022-01-18T12:00:01Z | - |
dc.date.available | 2022-01-18T12:00:01Z | - |
dc.date.created | 2022-01-18 | - |
dc.date.issued | 2021-08 | - |
dc.identifier.citation | ACM Transactions on Storage, v.17, no.3, pp.1 - 24 | - |
dc.identifier.issn | 1553-3077 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/16127 | - |
dc.description.abstract | A recent ultra-large SSD (e.g., a 32-TB SSD) provides many benefits in building cost-efficient enterprise storage systems. Owing to its large capacity, however, when such SSDs fail in a RAID storage system, a long rebuild overhead is inevitable for RAID reconstruction that requires a huge amount of data copies among SSDs. Motivated by modern SSD failure characteristics, we propose a new recovery scheme, called reparo, for a RAID storage system with ultra-large SSDs. Unlike existing RAID recovery schemes, reparo repairs a failed SSD at the NAND die granularity without replacing it with a new SSD, thus avoiding most of the inter-SSD data copies during a RAID recovery step. When a NAND die of an SSD fails, reparo exploits a multi-core processor of the SSD controller in identifying failed LBAs from the failed NAND die and recovering data from the failed LBAs. Furthermore, reparo ensures no negative post-recovery impact on the performance and lifetime of the repaired SSD. Experimental results using 32-TB enterprise SSDs show that reparo can recover from a NAND die failure about 57 times faster than the existing rebuild method while little degradation on the SSD performance and lifetime is observed after recovery. © 2021 Association for Computing Machinery. | - |
dc.language | English | - |
dc.publisher | Association for Computing Machinary, Inc. | - |
dc.title | Reparo: A Fast RAID Recovery Scheme for Ultra-large SSDs | - |
dc.type | Article | - |
dc.identifier.doi | 10.1145/3450977 | - |
dc.identifier.wosid | 000754611000006 | - |
dc.identifier.scopusid | 2-s2.0-85122597968 | - |
dc.type.local | Article(Overseas) | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.citation.publicationname | ACM Transactions on Storage | - |
dc.contributor.nonIdAuthor | Hong, Duwon | - |
dc.contributor.nonIdAuthor | Ha, Keonsoo | - |
dc.contributor.nonIdAuthor | Ko, Minseok | - |
dc.contributor.nonIdAuthor | Chun, Myoungjun | - |
dc.contributor.nonIdAuthor | Kim, Yoona | - |
dc.contributor.nonIdAuthor | Kim, Jihong | - |
dc.identifier.citationVolume | 17 | - |
dc.identifier.citationNumber | 3 | - |
dc.identifier.citationStartPage | 1 | - |
dc.identifier.citationEndPage | 24 | - |
dc.identifier.citationTitle | ACM Transactions on Storage | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordAuthor | Die failure | - |
dc.subject.keywordAuthor | ultra-large SSD | - |
dc.subject.keywordAuthor | RAID | - |
dc.subject.keywordAuthor | storage system | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.contributor.affiliatedAuthor | Hong, Duwon | - |
dc.contributor.affiliatedAuthor | Ha, Keonsoo | - |
dc.contributor.affiliatedAuthor | Ko, Minseok | - |
dc.contributor.affiliatedAuthor | Chun, Myoungjun | - |
dc.contributor.affiliatedAuthor | Kim, Yoona | - |
dc.contributor.affiliatedAuthor | Lee, Sungjin | - |
dc.contributor.affiliatedAuthor | Kim, Jihong | - |
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