FIELD: information technology.
SUBSTANCE: method comprises the steps of: selecting, for each copy of data to be stored, the child nodes for each layer from the preselected intermediate node to the end node according to the system of distributed data storage tree structure without the central node, and determining the end node as the required position for storing the copy of data, wherein the selection of the child node comprises the steps of: combining the identification of data to be stored and the identification of child node in the images remaining, obtaining a display value related to the child node using the preset display mode, selecting a sub-node of the central node according to the display value, and restarting the mapping relationship before each time the child node is selected; and storing all copies of data that must be stored in the required storage positions of data copies.
EFFECT: improving the reliability of distributed data storage system without central node and reducing the amount of data transferred when the number of system nodes changes.
17 cl, 5 dwg
