TITLE

Asymmetric Programming: A Highly Reliable Metadata Allocation Strategy for MLC NAND Flash Memory-Based Sensor Systems

AUTHOR(S)
Min Huang; Zhaoqing Liu; Liyan Qiao
PUB. DATE
October 2014
SOURCE
Sensors (14248220);Oct2014, Vol. 14 Issue 10, p18851
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
While the NAND flash memory is widely used as the storage medium in modern sensor systems, the aggressive shrinking of process geometry and an increase in the number of bits stored in each memory cell will inevitably degrade the reliability of NAND flash memory. In particular, it's critical to enhance metadata reliability, which occupies only a small portion of the storage space, but maintains the critical information of the file system and the address translations of the storage system. Metadata damage will cause the system to crash or a large amount of data to be lost. This paper presents Asymmetric Programming, a highly reliable metadata allocation strategy for MLC NAND flash memory storage systems. Our technique exploits for the first time the property of the multi-page architecture of MLC NAND flash memory to improve the reliability of metadata. The basic idea is to keep metadata in most significant bit (MSB) pages which are more reliable than least significant bit (LSB) pages. Thus, we can achieve relatively low bit error rates for metadata. Based on this idea, we propose two strategies to optimize address mapping and garbage collection. We have implemented Asymmetric Programming on a real hardware platform. The experimental results show that Asymmetric Programming can achieve a reduction in the number of page errors of up to 99.05% with the baseline error correction scheme.
ACCESSION #
99152544

 

Related Articles

  • An Adaptive Organization Method for Complex 3D City Models Considering User Experience. WU Chen; ZHU Qing; ZHANG Yeting; XU Weipin; XIE Xiao; ZHOU Yan // Geomatics & Information Science of Wuhan University;Nov2014, Vol. 39 Issue 11, p1293 

    The traditional method for visualization of 3D city models based on a "Layer-Object" does not consider the granularity differences in different data type and in different levels of detail, which results in the low transmission efficiency in the network environment and does not satisfy the need...

  • INVESTIGATING THE EFFECT OF USERS' TAGGING MOTIVATION ON THE DIGITAL EDUCATIONAL RESOURCES METADATA DESCRIPTIONS. Zervas, Panagiotis; Sampson, Demetrios G.; Aristeidou, Maria // Proceedings of the IADIS International Conference on Cognition &;2012, p123 

    Over the past years, several Open Educational Resources (OERs) initiatives have been emerged worldwide aiming to create, share and reuse digital educational resources among educational communities. As a result, organizing, offering and accessing these resources over the web have been key issues...

  • Custom Built Workflow Model Based on Metadata Base for Housing Management Systems. Jun LI; ChunChun HU; Na CAO; WenJuan TANG; Kai WEN // International Journal of Simulation -- Systems, Science & Techno;2016, Vol. 17 Issue 44, p36.1 

    Full life-cycle housing management system involve numerous issues: i) many business parts, ii) the need for quick change, iii) complex workflow, and iv) hard customization. In this paper, the meta workflow model is proposed with a method of workflow customization based on metadata base. We...

  • The illusion of accuracy. Barron, Nick // SC Magazine: For IT Security Professionals (UK Edition);Sep2007, p17 

    The author focuses on accuracy of data and information security. He explains that blind trust in computer data can have serious consequences and that interpreting computer evidence such as log files and metadata needs careful handling. He also explains that log files do not show exact or...

  • Research into Plans for the Activation of Culture Archetype Contents Service. Hee-soo Choi; Chin-oh Chu // International Journal of Multimedia & Ubiquitous Engineering;Dec2014, Vol. 9 Issue 12, p137 

    The purpose of this paper is to attempt to discover ways by which a Culture Archetype Portal may be activated. Cultural archetypes are a service which has incurred huge costs over the past ten years with the aim of providing material for the cultural contents industry. As the result of a survey...

  • The Geospatial Metadata Manager's Toolbox: Three Techniques for Maintaining Records. Godfrey, Bruce; Kenyon, Jeremy // Code4Lib Journal;2015, Issue 29, p1 

    Managing geospatial metadata records requires a range of techniques. At the University of Idaho Library, we have tens of thousands of records which need to be maintained as well as the addition of new records which need to be normalized and added to the collections. We show a graphical user...

  • metadata.  // Bloomsbury Business Library - Business & Management Dictionary;2007, p4764 

    A definition of the term metadata is presented. It refers to essential information on a document or Web page, such as publication date, author, keywords, title, and summary. This information is used by search engines to find relevant Web sites when a user requests a search.

  • Digital Communication. Adamy, Dave // Journal of Electronic Defense;Mar2012, Vol. 35 Issue 3, p44 

    The article discusses the importance of digital data link having adequate link margin to succeed in passing data from one location to another. Measurable elements in the link margin include link distance, and systems gains and losses, while weather is a statistical element. According to the...

  • Plan to Build Metadata for Activation of Traditional Cultural Creative Contents Services. Hee-soo Choi // International Journal of Software Engineering & Its Applications;2014, Vol. 8 Issue 10, p153 

    This paper will discuss plans to put in place metadata for activating traditional cultural creative contents services. Traditional cultural creative contents services are of different forms depending on the data-holding institution. Due to this, users can only sufficiently obtain sought...

Share

Read the Article

Courtesy of

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics