Abstract: A first data management apparatus in a plurality of data management apparatuses corresponds to a first blockchain node in a blockchain network, and a second data management apparatus corresponds to a second blockchain node in the blockchain network. A storage mounted to the first data management apparatus and a storage mounted to the second data management apparatus are configured to form a storage resource pool of the blockchain network. A method includes a target data management apparatus in the plurality of data management apparatuses that receives a data operation request; and that the target data management apparatus obtains a storage address of a plurality of data shards of target data from the blockchain network based on the data operation request, and performs I/O on the target data in the storage resource pool based on the storage address of the plurality of data shards.

Abstract: A data storage system provides a data storage interface for a plurality of clients, and the client may request on-chain storage by invoking the data storage interface. The data storage system may interconnect with and serve a plurality of blockchain systems. In addition, the data storage system further includes a storage resource pool shared by the plurality of clients to share a storage resource.

Abstract: The present invention relates to a method for promoting growth of gas-fermented microorganisms, comprising the following steps: S1. ultrasonically blending a surfactant and a culture medium, then adding a fluorine-containing alkyl compound to a mixture, and ultrasonically processing the mixture to obtain a perfluorocarbon nanoemulsion; S2. inoculating a bacterial suspension into the perfluorocarbon nanoemulsion, and introducing simultaneously a mixed gas to obtain a precursor; S3. cultivating the precursor in a shaker, wherein the precursor has a diameter of bubbles of 2.0-4.2 mm, and the bubbles have the total volume of less than 40 ml. Under these conditions, the microorganisms have a high utilization rate of the gas, can grow and metabolize more quickly, and can obtain bacteria and products more quickly. Compared with a traditional culture system, addition of a mass transfer material can promote gas mass transfer. Therefore, the gas consumption is small, and the cost is low.