Ustor: cloud storage system based on regenerating codes
To ensure reliability of user's data, multiple clouds are responsible for storing the data. For purpose of mini-mizing storage cost and repair bandwidth, a method of utilizing functional regenerating codes(FRC) to encode data to several blocks, which are further distributed to different clouds,...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2014-04-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.019/ |
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| _version_ | 1841539703495458816 |
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| author | Qing LIU Dan FENG Bai LI |
| author_facet | Qing LIU Dan FENG Bai LI |
| author_sort | Qing LIU |
| collection | DOAJ |
| description | To ensure reliability of user's data, multiple clouds are responsible for storing the data. For purpose of mini-mizing storage cost and repair bandwidth, a method of utilizing functional regenerating codes(FRC) to encode data to several blocks, which are further distributed to different clouds, was proposed. In this way, amount of data downloaded through the network when data loss happens in a single cloud is cut down, and repair cost is cut down as well. This method was successfully applied in a cloud storage system Ustor. Observations can be drawn from the experimental re-sults: first, erasure coding guarantees data reliability, increasing 5%～10% response time compared with non-coding; sec-ond, speed of FRC encode, decode and repair are a little slower than Reed-Solomon(RS) code, and the time gap of en-coding 256MB by two codes is less than 0.5 seconds; third, compared with traditional RS codes, FRC reduces more than 25% data amount needed to download during a repair in the experiment. |
| format | Article |
| id | doaj-art-02de889e83e440f5b2e0f247a8a561f5 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2014-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-02de889e83e440f5b2e0f247a8a561f52025-01-14T06:43:14ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2014-04-013516617359681154Ustor: cloud storage system based on regenerating codesQing LIUDan FENGBai LITo ensure reliability of user's data, multiple clouds are responsible for storing the data. For purpose of mini-mizing storage cost and repair bandwidth, a method of utilizing functional regenerating codes(FRC) to encode data to several blocks, which are further distributed to different clouds, was proposed. In this way, amount of data downloaded through the network when data loss happens in a single cloud is cut down, and repair cost is cut down as well. This method was successfully applied in a cloud storage system Ustor. Observations can be drawn from the experimental re-sults: first, erasure coding guarantees data reliability, increasing 5%～10% response time compared with non-coding; sec-ond, speed of FRC encode, decode and repair are a little slower than Reed-Solomon(RS) code, and the time gap of en-coding 256MB by two codes is less than 0.5 seconds; third, compared with traditional RS codes, FRC reduces more than 25% data amount needed to download during a repair in the experiment.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.019/cloud storageregenerating codeserasure codesrepair bandwidth |
| spellingShingle | Qing LIU Dan FENG Bai LI Ustor: cloud storage system based on regenerating codes Tongxin xuebao cloud storage regenerating codes erasure codes repair bandwidth |
| title | Ustor: cloud storage system based on regenerating codes |
| title_full | Ustor: cloud storage system based on regenerating codes |
| title_fullStr | Ustor: cloud storage system based on regenerating codes |
| title_full_unstemmed | Ustor: cloud storage system based on regenerating codes |
| title_short | Ustor: cloud storage system based on regenerating codes |
| title_sort | ustor cloud storage system based on regenerating codes |
| topic | cloud storage regenerating codes erasure codes repair bandwidth |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2014.04.019/ |
| work_keys_str_mv | AT qingliu ustorcloudstoragesystembasedonregeneratingcodes AT danfeng ustorcloudstoragesystembasedonregeneratingcodes AT baili ustorcloudstoragesystembasedonregeneratingcodes |