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en:group:seminars:20110518 [2011/05/10 09:45] maatouk |
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| ==== abstract ==== | ==== abstract ==== | ||
| Two-dimensional Array Codes are a central tool to efficiently maintain data reliability and availability in commercial storage systems. Aggregating multiple storage devices into a large pool of storage requires protection from failures of individual devices. The effectiveness of Array Codes in that task is thanks to their two main features: | Two-dimensional Array Codes are a central tool to efficiently maintain data reliability and availability in commercial storage systems. Aggregating multiple storage devices into a large pool of storage requires protection from failures of individual devices. The effectiveness of Array Codes in that task is thanks to their two main features: | ||
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| 1) Column based error/erasure model -> resilience to massive failures in individual devices | 1) Column based error/erasure model -> resilience to massive failures in individual devices | ||
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| 2) Low-density encoding matrices -> low complexity encoding, decoding and updates | 2) Low-density encoding matrices -> low complexity encoding, decoding and updates | ||