2010 IEEE Fifth International Conference on Networking, Architecture, and Storage最新文献_第6页

An Evaluation of Two Typical RAID-6 Codes on Online Single Disk Failure Recovery 两种典型RAID-6码在单盘故障在线恢复中的评价

2010 IEEE Fifth International Conference on Networking, Architecture, and Storage Pub Date : 2010-07-15 DOI: 10.1109/NAS.2010.64

Q. Cao, Shenggang Wan, Chentao Wu, Shenghui Zhan

{"title":"An Evaluation of Two Typical RAID-6 Codes on Online Single Disk Failure Recovery","authors":"Q. Cao, Shenggang Wan, Chentao Wu, Shenghui Zhan","doi":"10.1109/NAS.2010.64","DOIUrl":"https://doi.org/10.1109/NAS.2010.64","url":null,"abstract":"Redundant Arrays of Independent Disks RAID is a popular storage architecture with high performance and reliability. RAID-6 with a higher level of reliability based on MDS (Maximum Distance Separable) code is well studied, for its optimal storage efficiency. RAID-6 could offer continuous services in degraded mode, during the period of online failure recovery. However, the online recovery would bring a considerable I/O workflow to the storage system, that almost all the surviving data in the system need to be accessed. Due to the limitation of disk bandwidth, user response time would be significantly affected by the recovery workflow. In this paper, we examine the online recovery performance of two typical MDS RAID-6 codes RDP code and P-code. To our observation, P-code significiantly outperforms RDP in user response time and recovery duration during a single disk failure recovery. To our analysis, the difference comes from not only the parity layout but also the parity organization. Therefore, we propose a new categorization for existing MDS RAID-6 codes, based on the methodology of parity organization. By our approach, all the MDS RAID-6 codes could be categorized to Sym-codes with only one type of parity, and Asym-codes with at least two different types of parity.","PeriodicalId":284549,"journal":{"name":"2010 IEEE Fifth International Conference on Networking, Architecture, and Storage","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125582648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

EDOS: Employing Mini-DB for High Semantic Object Store EDOS:采用Mini-DB实现高语义对象存储

2010 IEEE Fifth International Conference on Networking, Architecture, and Storage Pub Date : 2010-07-15 DOI: 10.1109/NAS.2010.35

X. Tu, D. Feng, Zhipeng Tan

{"title":"EDOS: Employing Mini-DB for High Semantic Object Store","authors":"X. Tu, D. Feng, Zhipeng Tan","doi":"10.1109/NAS.2010.35","DOIUrl":"https://doi.org/10.1109/NAS.2010.35","url":null,"abstract":"Storage management server, compatible with decoupled data and meta data fashion, is being employed frantically to build large-scale distributed storage system for performance and capacity. To design this hot commodity on flexibly managing the extracted data with little meta data but extended attributes has become a big challenge. This paper breaks a new way to object orient store and implement the dedicated prototype, called EDOS. We reexamine several new requirements and prior works, and employ Mini-DB as the back-end (emph{like DBFS}) to guarantee the scalability and durability for EDOS. We design three kinds of object locators and multi-indices to improve retrieval performance and absorb random I/O, utilize a swap mechanism between internal and external objects for tunable throughput, which nested beneath the generic key-value database schema and benefited from memory pool technique. The replication component in Mini-DB helps to build the multi nodes in the distributed environment. It is easy to build up the object-based distributed file system by EDOS with ACID transaction semantics and high reliability. The experimental results show that our kernel-level implementation of EDOS performed better than the other existences in practice.","PeriodicalId":284549,"journal":{"name":"2010 IEEE Fifth International Conference on Networking, Architecture, and Storage","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125818593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving Disk Array Reliability Through Expedited Scrubbing 通过加速扫描提高磁盘阵列可靠性

2010 IEEE Fifth International Conference on Networking, Architecture, and Storage Pub Date : 2010-07-01 DOI: 10.1109/NAS.2010.37

Jehan-Francois Pâris, T. Schwarz, A. Amer, D. Long

引用次数: 12

Multi-dimensional Index on Hadoop Distributed File System Hadoop分布式文件系统的多维索引

2010 IEEE Fifth International Conference on Networking, Architecture, and Storage Pub Date : 2010-07-01 DOI: 10.1109/NAS.2010.44

Haojun Liao, Jizhong Han, Jinyun Fang

引用次数: 87