A hybrid storage system composed of on-the-fly automated storage tiering (OTF-AST) and caching

Kazuichi Oe; Koji Okamura

doi:10.1109/CANDAR.2014.90

A hybrid storage system composed of on-the-fly automated storage tiering (OTF-AST) and caching

Kazuichi Oe, Koji Okamura

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

In a previous workload study, we found a new type of I/O concentration approximately 6 GB in size that continues for more than 10 minutes and then moves on to another area. We also found that the conventional hybrid storage method, static tiering and caching, is not sufficient for this I/O concentration. The on-the-fly automated storage tiering (OTF-AST) designed for this I/O concentration cannot handle other I/O concentrations well, so we have developed a hybrid storage system composed of both OTF-AST and caching. In the proposed system, the OTF-AST dynamically migrates the new I/O concentration to SSD and the caching handles the other I/O concentrations. Experimental results showed that the hybrid storage system surpasses the basic OTF-AST system with an average response time 27% better for one of a typical samba workload in which read is not predominant and I/O concentration lasts for 20 minutes.

Original language	English
Title of host publication	Proceedings - 2014 2nd International Symposium on Computing and Networking, CANDAR 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	406-411
Number of pages	6
ISBN (Electronic)	9781479941520
DOIs	https://doi.org/10.1109/CANDAR.2014.90
Publication status	Published - Feb 27 2015
Event	2nd International Symposium on Computing and Networking, CANDAR 2014 - Shizuoka, Japan Duration: Dec 10 2014 → Dec 12 2014

Other

Other	2nd International Symposium on Computing and Networking, CANDAR 2014
Country/Territory	Japan
City	Shizuoka
Period	12/10/14 → 12/12/14

All Science Journal Classification (ASJC) codes

Computer Networks and Communications

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10.1109/CANDAR.2014.90

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A hybrid storage system composed of on-the-fly automated storage tiering (OTF-AST) and caching. / Oe, Kazuichi; Okamura, Koji.

Proceedings - 2014 2nd International Symposium on Computing and Networking, CANDAR 2014. Institute of Electrical and Electronics Engineers Inc., 2015. p. 406-411 7052218.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Oe, K & Okamura, K 2015, A hybrid storage system composed of on-the-fly automated storage tiering (OTF-AST) and caching. in Proceedings - 2014 2nd International Symposium on Computing and Networking, CANDAR 2014., 7052218, Institute of Electrical and Electronics Engineers Inc., pp. 406-411, 2nd International Symposium on Computing and Networking, CANDAR 2014, Shizuoka, Japan, 12/10/14. https://doi.org/10.1109/CANDAR.2014.90

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A hybrid storage system composed of on-the-fly automated storage tiering (OTF-AST) and caching

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