Open Access

ARTICLE

NVM Storage in IoT Devices: Opportunities and Challenges

Yang Liu¹, Shan Zhao^1,*, Wenhan Chen¹, Xuran Ge¹, Fang Liu², Shuo Li³, Nong Xiao¹

1 College of Computer, National University of Defense Technology, Changsha, 410000, China
2 School of Design, HuNan University, Changsha, 410000, China
3 School of Informatics, University of Edinburgh, Edinburgh, EH8 9JU, UK

* Corresponding Author: Shan Zhao. Email:

Computer Systems Science and Engineering 2021, 38(3), 393-409. https://doi.org/10.32604/csse.2021.017224

Received 24 January 2021; Accepted 03 March 2021; Issue published 19 May 2021

Abstract

Edge storage stores the data directly at the data collection point, and does not need to transmit the collected data to the storage central server through the network. It is a critical technology that supports applications such as edge computing and 5G network applications, with lower network communication overhead, lower interaction delay and lower bandwidth cost. However, with the explosion of data and higher real-time requirements, the traditional Internet of Things (IoT) storage architecture cannot meet the requirements of low latency and large capacity. Non-volatile memory (NVM) presents new possibilities regarding this aspect. This paper classifies the different storage architectures based on NVM and compares the system goals, architectures, features, and limitations to explore new research opportunities. Moreover, the existing solutions to reduce the write latency and energy consumption and increase the lifetime of NVM IoT storage devices are analyzed. Furthermore, we discuss the security and privacy issues of IoT devices and compare the mainstream solutions. Finally, we present the opportunities and challenges of building IoT storage systems based on NVM.

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Keywords

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