NDLI: Improving internal parallelism of solid state drives with selective multi-plane operation

Content Provider	IET Digital Library
Author	Shin, I.
Abstract	Solid state drives (SSDs) achieve a significantly better performance than hard disks by internally implementing channel level, chip level, and die level parallelism. However, the plane level parallelism has not been sufficiently exploited, because of the constraint that the target pages of the planes must be in the same location. To overcome this constraint, a policy that enforces the multi-plane operation by matching the position of the target pages while wasting clean pages is proposed. However, this policy excessively increases the number of block erasures, which leads to reducing the stability and lifetime of the SSD. To solve this problem, this Letter proposes a policy that determines whether to perform the multi-plane operation considering the number of wasted clean pages. The performance evaluation using representative server workloads shows that the proposed policy improves an average performance by up to 28.82% over the policy that does not perform the multi-plane operation, without significantly increasing the number of block erasures.
Starting Page	64
Ending Page	66
Page Count	3
ISSN	00135194
Volume Number	54
e-ISSN	1350911X
Issue Number	Issue 2, Jan (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/54/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.3912
Journal	Electronics Letters
Publisher Date	2017-12-06
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Channel Level Parallelism Chip Level Parallelism Die Level Parallelism Digital Storage Hard Disk Internal Parallelism Memory Circuit Performance Evaluation Plane Level Parallelism Representative Server Workload Selective Multiplane Operation Solid State Drive SSD Stability Wasted Clean Page
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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