| Presentation | 2015-08-05 On-The-Fly Automated Storage Tiering with Proactive and Observational Migration Kazuichi Oe, Takeshi Nanri, Koji Okamura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In a previous workload study, we found the characteristic Input-Output (IO) concentration to be ap-proximately several GBs in size and to continue for 2-3 minutes before moving on to the neighboring area. Moreover, this IO concentration mostly appeared on the arbitrary offset. Therefore, conventional tiering is not sufficient forthis IO concentration because the tiering moves data on a daily basis according to statistical information. Cachingis also not sufficient due to the large amount of write-back traffic. The on-the-fly automated storage tiering (OTF-AST) system dynamically migrates this IO concentration from the hard disk drive (HDD) to the solid-state drive(SSD). However, the OTF-AST system cannot effectively handle previously studied IO concentrations because theyresult in many short-time migrations and the system slows down. Therefore, we developed an OTF-AST system withproactive and observational migration features. This system dynamically migrates the IO concentration to the SSDand the proactive migration feature migrates the candidate IO concentration to an area that will become the area ofIO concentration in the near future. The proactive migration feature can improve IO concentration with short-timemigration. Moreover, the observational migration feature recognizes HDD overhead by checking user IO responsetime and migrates the IO concentration from where it already finished, to the HDD when the HDD overhead is low. Experimental results showed that our proposed system exhibited a faster average response time that is 46.9% fasterthan that of FACEBOOK FlashCache for one of the Microsoft Research Cambridge workloads. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Hybrid storage system / Caching / Tiering / Storage workload / SSD / HDD / Migration |
| Paper # | CPSY2015-30 |
| Date of Issue | 2015-07-28 (CPSY) |
| Conference Information | |
| Committee | CPSY / DC / IPSJ-ARC |
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| Conference Date | 2015/8/4(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | B-Con Plaza (Beppu) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Parallel, Distributed and Cooperative Processing |
| Chair | Yasuhiko Nakashima(NAIST) / Nobuyasu Kanekawa(Hitachi) |
| Vice Chair | Koji Nakano(Hiroshima Univ.) / Hidetsugu Irie(Univ. of Tokyo) / Michiko Inoue(NAIST) |
| Secretary | Koji Nakano(Fujitsu Labs.) / Hidetsugu Irie(NII) / Michiko Inoue(RTRI) / (Kyoto Sangyo Univ.) |
| Assistant | Shinya Takameda(NAIST) / Takeshi Ohkawa(Utsunomiya Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Computer Systems / Technical Committee on Dependable Computing / Special Interest Group on System Architecture |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On-The-Fly Automated Storage Tiering with Proactive and Observational Migration |
| Sub Title (in English) | |
| Keyword(1) | Hybrid storage system |
| Keyword(2) | Caching |
| Keyword(3) | Tiering |
| Keyword(4) | Storage workload |
| Keyword(5) | SSD |
| Keyword(6) | HDD |
| Keyword(7) | Migration |
| 1st Author's Name | Kazuichi Oe |
| 1st Author's Affiliation | FUJITSU LABORATORIES LTD.(FUJITSU LABO.) |
| 2nd Author's Name | Takeshi Nanri |
| 2nd Author's Affiliation | Kyushu University(Kyushu Univ.) |
| 3rd Author's Name | Koji Okamura |
| 3rd Author's Affiliation | Kyushu University(Kyushu Univ.) |
| Date | 2015-08-05 |
| Paper # | CPSY2015-30 |
| Volume (vol) | vol.115 |
| Number (no) | CPSY-174 |
| Page | pp.pp.161-166(CPSY), |
| #Pages | 6 |
| Date of Issue | 2015-07-28 (CPSY) |