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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (8): 1106-1113    DOI: 10.1631/jzus.A0820485
Electrical & Electronic Engineering     
Extending attributes page: a scheme for enhancing the reliability of storage system metadata
Juan WANG, Dan FENG, Fang WANG, Cheng-tao LU
MOE Key Lab of Data Storage System, Huazhong University of Science and Technology, Wuhan 430074, China
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Abstract  In an object-based storage system, a novel scheme named EAP (extending attributes page) is presented to enhance the metadata reliability of the system by adding the user object file information attributes page for each user object and storing the file-related attributes of each user object in object-based storage devices. The EAP scheme requires no additional hardware equipments compared to a general method which uses backup metadata servers to improve the metadata reliability. Leveraging a Markov chain, this paper compares the metadata reliability of the system using the EAP scheme with that using only metadata servers to offer the file metadata service. Our results demonstrate that the EAP scheme can dramatically enhance the reliability of storage system metadata.

Key words： Metadata server      Metadata reliability      Markov model      Extending attributes page (EAP)     
Received: 25 June 2008     
CLC:  TP31  
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Juan WANG
Dan FENG
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Cheng-tao LU
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Juan WANG, Dan FENG, Fang WANG, Cheng-tao LU. Extending attributes page: a scheme for enhancing the reliability of storage system metadata. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(8): 1106-1113.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820485     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I8/1106

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