Data read-write method and system, and device and storage medium

Abstract

The present disclosure discloses a data read and write method. The method is applied to a logical management controller, where the logical management controller communicates with a central processing unit (CPU) and at least two expanded memory controllers respectively based on a compute express link (CXL) protocol, the logical management controller includes a request parsing module, an address decoding module, a request decomposition module and a request allocation module, and the method includes: parsing a received data read and write request for target data to obtain a local command; performing command parsing on the local command to determine location information for reading and writing data; generating a plurality of data read and write sub-requests based on the location information; sending the plurality of data read and write sub-requests to target expanded memory controllers; and controlling the target expanded memory controllers to perform data read and write operations in parallel according to the plurality of data read and write sub-requests.