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| Presentation | 2015-08-05 15:15 On-The-Fly Automated Storage Tiering with Proactive and Observational Migration Kazuichi Oe (FUJITSU LABO.), Takeshi Nanri, Koji Okamura (Kyushu Univ.)  CPSY2015-30 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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 for this IO concentration because the tiering moves data on a daily basis according to statistical information. Caching is 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 they result in many short-time migrations and the system slows down. Therefore, we developed an OTF-AST system with proactive and observational migration features. This system dynamically migrates the IO concentration to the SSD and the proactive migration feature migrates the candidate IO concentration to an area that will become the area of IO concentration in the near future. The proactive migration feature can improve IO concentration with short-time migration. Moreover, the observational migration feature recognizes HDD overhead by checking user IO response time 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% faster than that of FACEBOOK FlashCache for one of the Microsoft Research Cambridge workloads. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Hybrid storage system / Caching / Tiering / Storage workload / SSD / HDD / Migration / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 174, CPSY2015-30, pp. 161-166, Aug. 2015. | |
| Paper # | CPSY2015-30 | |
| Date of Issue | 2015-07-28 (CPSY) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | CPSY2015-30 |
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| Conference Information | |
| Committee | CPSY DC IPSJ-ARC |
| Conference Date | 2015-08-04 - 2015-08-06 |
| 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 |
| Paper Information | |
| Registration To | CPSY |
| Conference Code | 2015-08-CPSY-DC-ARC |
| Language | English |
| 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 |
| Keyword(8) | |
| 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.) |
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| Speaker | Author-1 |
| Date Time | 2015-08-05 15:15:00 |
| Presentation Time | 30 minutes |
| Registration for | CPSY |
| Paper # | CPSY2015-30 |
| Volume (vol) | vol.115 |
| Number (no) | no.174 |
| Page | pp.161-166 |
| #Pages | 6 |
| Date of Issue | 2015-07-28 (CPSY) |
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