Data storage method based on RS (Reed-Solomon) erasure codes
A data storage and erasure code technology, applied in the field of information processing, can solve problems such as wasting space and increasing costs, and achieve the effects of reducing costs, ensuring efficiency, and saving storage space
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[0025] The present embodiment is used for storing the file of 180M, specifically comprises the following steps:
[0026] In the first step, the 180M file to be stored is divided into 6 original data blocks of equal size according to a fixed size of 30M, and these 6 original data blocks are divided into two groups, each group including 3 original data blocks.
[0027] In the second step, the original data block in each data group is transmitted from the client to the data node block by block. When the i-th data group is transmitted, the data node that receives the data of the data group transmits the received data to A data node designated for the management node, the data node obtains all the original data block information of the group of data blocks, 1≤i≤2.
[0028] In the third step, the data node that obtains all the original data block information of the i-th data block performs (5, 3) RS encoding on the data group, so that the i-th data group changes fr...
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