An Efficient SSD-based Hybrid Storage Architecture for Large-Scale Search Engines

Li, Ruixuan; Li, Chengzhou; Xiao, Weijun; Jin, Hai; He, Heng; Gu, Xiwu; Wen, Kunmei; Xu, Zhiyong

doi:10.1109/icpp.2012.17

Cited by 11 publications

(16 citation statements)

References 14 publications

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“…We implement both the fixed threshold method in Section 3.2( [14], with different δ) and our FADM to manage the data migration between SSDs and HDDs. Under FADM, δ is adaptively adjusted every T (= 2) hours with a = 0.001.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…For the purpose of reducing the writing of SSDs, a video is allowed to be moved from HDDs to SSDs only when its popularity is significantly higher than that of a video cached in SSDs. More specifically, we quantify the significance of popularity by a threshold 1 + δ and implement the following data migration method with a fixed threshold as the one in [14]. That method is specified with its operations in three stages.…”

Section: A Data Migration Methods With a Fixed Thresholdmentioning

confidence: 99%

“…Afterward, DMM works to compare the popularity of the hottest video in HDDs, P h , and the popularity of the coldest video in SSDs, P s . When the popularity condition in (2) is satisfied, the coldest video in SSDs is moved from SSDs to HDDs in order to make room for the hottest video in HDDs as in [14].…”

Section: The Third Stagementioning

confidence: 99%

“…So it is necessary to balance the performance of the hybrid storage systems and the limited write capacity of SSDs. To our best knowledge, there is, unfortunately, no much research aiming at this desired balance besides [14].…”

mentioning

confidence: 99%

“…An important method is proposed in [14] to limit the data migration to SSDs. That method calculates both the average cost of accessing a data block in HDDs and the average cost of accessing a data block in SSDs.…”

mentioning

confidence: 99%

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A feedback-based adaptive data migration method for hybrid storage VOD caching systems

Ling

Yan

et al. 2014

Multimed Tools Appl

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Nowadays Video-On-Demand (VOD) caching systems are often equipped with hybrid storage devices, which have been designed to combine the high read speed of Solid State Disks (SSDs) and the large capacity of Hard Disk Drives (HDDs). However, the number of erase cycles of SSDs is limited. So it is important to control the write load of SSDs in real applications. This paper proposes a Feedback-based Adaptive Data Migration (FADM) method, which can utilize the real-time feedback of the write load of SSDs to adjust the rule of moving data between HDDs and SSDs. More specifically, a video in HDDs is allowed to be moved into SSDs when its popularity is higher than that of the least popular video in SSDs by a threshold. This threshold is adaptively adjusted according to the feedback of the write load of SSDs. With FADM, the desired lifetime of SSDs can be well guaranteed even under various user behaviors while good read performance can be maintained. Simulations are done to demonstrate the effectiveness of FADM.

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Section: Simulation Resultsmentioning

confidence: 99%

Section: A Data Migration Methods With a Fixed Thresholdmentioning

confidence: 99%

Section: The Third Stagementioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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