Computer-implemented methods, non-transitory, computer-readable media, and computer-implemented systems for data storage are provided. A routing relationship between a data block and a data node is established by using a block hash of the data block. A blockchain-type ledger is stored in a distributed manner with a level of granularity of data block. Metadata such as block header information is stored in a coordinator node. The data block or a block body in the data block is stored in the data node.