AONT-LT：一种面向云和协同存储系统的数据保护方案
AONT-LT: a Data Protection Scheme for Cloud and Cooperative Storage Systems
摘要：
我们提出了一个著名的AONT-RS计划分散存储系统的变体。新颖之处在于用无比率卢比变换码代替里德-所罗门码。由此产生的系统，名为AONT-LT，是能够通过分散在任意大量的存储节点的数据，同时确保有限的复杂性，以提高性能。所提出的解决方案特别适合于协作存储系统的情况。结果表明，虽然AONT-RS方案需要采用碎片实现广泛的分布，从而惩罚的性能，新的AONT-LT方案可以利用可变长度的代码，允许实现非常好的性能和可扩展性。
英文摘要：
We propose a variant of the well-known AONT-RS scheme for dispersed storage systems. The novelty consists in replacing the Reed-Solomon code with rateless Luby transform codes. The resulting system, named AONT-LT, is able to improve the performance by dispersing the data over an arbitrarily large number of storage nodes while ensuring limited complexity. The proposed solution is particularly suitable in the case of cooperative storage systems. It is shown that while the AONT-RS scheme requires the adoption of fragmentation for achieving widespread distribution, thus penalizing the performance, the new AONT-LT scheme can exploit variable length codes which allow to achieve very good performance and scalability.
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