A New FTL-Based Flash Memory Management Scheme for Flash-Based Storage Systems

2014 ◽  
Vol 651-653 ◽  
pp. 1000-1003
Author(s):  
Yin Yang ◽  
Wen Yi Li ◽  
Kai Wang
Keyword(s):  
Service Life ◽  
Data Storage ◽  
Flash Memory ◽  
Memory Management ◽  
Storage Systems ◽  
Management Scheme ◽  
Flash Translation Layer ◽  
Link Table

In this paper, we propose a novel and efficient flash translation layer scheme called BLTF: Block Link-Table FTL. In this proposed scheme, all blocks can be used for servicing update requests, so updates operation can be performed on any of the physical blocks, through uniting log blocks and physical blocks, it can avoid uneven erasing and low block utilization. The invalid blocks, in BLTF scheme, could be reclaimed properly and intensively, it can avoid merging log blocks with physical blocks. At last, the BLTF is tested by simulation, which demonstrates the BLTF can effectively solve data storage problems. Through comparison with other algorithms, we can know that the proposed BLTF greatly prolongs service life of flash devices and improves efficiency of blocks erasing operation.

Confidential Data Storage Systems for Wearable Platforms

2018 ◽  
pp. 65-83
Author(s):  
Mingzhong Wang ◽  
Don Kerr
Keyword(s):  
Data Storage ◽  
Flash Memory ◽  
Cloud Storage ◽  
Storage Systems ◽  
Storage System ◽  
Security And Privacy ◽  
Storage Solutions ◽  
Confidential Data ◽  
Wearable Products ◽  
Confidentiality Protection

With the features of mobility, reality augmentation, and context sensitivity, wearable devices are widely deployed into various domains. However, the sensitivity of collected data makes security and privacy protection one of the first priority in the advancement of wearable technologies. This chapter provides a study on encryption-based confidentiality protection for data storage systems in wearable platforms. The chapter first conducts a review to storage solutions in consumer wearable products and explores a two-tier, local flash memory and remote cloud storage, storage system in wearable platforms. Then encryption-based confidentiality protection and implementation methods for both flash memory and remote cloud storage are summarized. According to the interaction and integration of these two components, a categorization of confidential storage systems in wearable platforms is proposed. In addition, the benefits and selection criteria for each category are also discussed.

Confidential Data Storage Systems for Wearable Platforms

2016 ◽  
pp. 74-97
Author(s):  
Mingzhong Wang ◽  
Don Kerr
Keyword(s):  
Data Storage ◽  
Flash Memory ◽  
Cloud Storage ◽  
Storage Systems ◽  
Storage System ◽  
Security And Privacy ◽  
Storage Solutions ◽  
Confidential Data ◽  
Wearable Products ◽  
Confidentiality Protection

With the features of mobility, reality augmentation, and context sensitivity, wearable devices are widely deployed into various domains. However, the sensitivity of collected data makes security and privacy protection one of the first priority in the advancement of wearable technologies. This chapter provides a study on encryption-based confidentiality protection for data storage systems in wearable platforms. The chapter first conducts a review to storage solutions in consumer wearable products and explores a two-tier, local flash memory and remote cloud storage, storage system in wearable platforms. Then encryption-based confidentiality protection and implementation methods for both flash memory and remote cloud storage are summarized. According to the interaction and integration of these two components, a categorization of confidential storage systems in wearable platforms is proposed. In addition, the benefits and selection criteria for each category are also discussed.

scholarly journals Taming Performance Variability of Healthcare Data Service Frameworks with Proactive and Coarse-Grained Memory Cleaning

2019 ◽  
Vol 16 (17) ◽  
pp. 3096
Author(s):  
Eunji Lee
Keyword(s):  
Data Storage ◽  
Memory Management ◽  
Buffer Management ◽  
Coarse Grained ◽  
Healthcare Data ◽  
Management Scheme ◽  
High Responsiveness ◽  
Performance Optimizations ◽  
Memory Buffer ◽  
Embedded Database

This article explores the performance optimizations of an embedded database memory management system to ensure high responsiveness of real-time healthcare data frameworks. SQLite is a popular embedded database engine extensively used in medical and healthcare data storage systems. However, SQLite is essentially built around lightweight applications in mobile devices, and it significantly deteriorates when a large transaction is issued such as high resolution medical images or massive health dataset, which is unlikely to occur in embedded systems but is quite common in other systems. Such transactions do not fit in the in-memory buffer of SQLite, and SQLite enforces memory reclamation as they are processed. The problem is that the current SQLite buffer management scheme does not effectively manage these cases, and the naïve reclamation scheme used significantly increases the user-perceived latency. Motivated by this limitation, this paper identifies the causes of high latency during processing of a large transaction, and overcomes the limitation via proactive and coarse-grained memory cleaning in SQLite.The proposed memory reclamation scheme was implemented in SQLite 3.29, and measurement studies with a prototype implementation demonstrated that the SQLite operation latency decreases by 13% on an average and up to 17.3% with our memory reclamation scheme as compared to that of the original version.

A Read-Write Optimization Scheme for Flash Memory Storage Systems

2014 ◽  
Vol 687-691 ◽  
pp. 2096-2099
Author(s):  
Yin Yang ◽  
Wen Yi Li ◽  
Kai Wang
Keyword(s):  
Data Storage ◽  
Page Number ◽  
Flash Memory ◽  
Storage Systems ◽  
Memory Storage ◽  
Simulation Test ◽  
Optimization Scheme ◽  
Block Number

In this paper, we propose a novel and efficient read-write optimization scheme for flash memory storage systems, we have named RWF: Read-Write FTL. In the proposed scheme, we effectively connect Logical Sector Number, Logical Block Number, Logical Page Number, Physical Page Number and Physical Block Number. RWF through uniting log blocks and physical blocks, all blocks can be used for servicing update requests. The invalid blocks could be reclaimed properly and intensively, it can avoid merging log blocks with physical blocks. At last, through the simulation test on RWF and the comparison with other schemes, which demonstrate the RWF can effectively solve data storage problems, and it greatly reduces erase count of flash devices and efficiency improves the performance of flash memory storage systems.

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