Data storage method and system, storage access configuration method, and related device

An adapter card, comprising:

• a memory configured to store instructions;
• and
• one or more processors coupled to the memory and configured to execute the instructions to:
• establish, through a bus, a first communication connection with a host;
• provide, for the host, first memory space that supports memory semantic access, wherein the first memory space is mapped from a capacity of a second memory space of a storage node and is configured to support memory semantic access operations from the host;
• receive, through the first communication connection and from the host, first data that the host requests to write into a first address of the first memory space, wherein the first data is received as memory semantic operations comprising byte-level addressing operations;
• establish, through a network, a second communication connection with the storage node;
• write, through the second communication connection and into the second memory space of the storage node, the first data by converting the memory semantic access operations received from the host to remote direct memory access (RDMA) network protocol operations for transmitting the first data to the storage node;
• and
• store a first correspondence between a physical address of the second memory space and the first address, wherein the first correspondence maps byte-level addresses from the memory semantic access operations to physical addresses of the second memory space.

A method, comprising:

• establishing, through a bus, a first communication connection with a host;
• providing, for the host, a first memory space that supports memory semantic access, wherein the first memory space is mapped from a capacity of a second memory space of a storage node and is configured to support memory semantic access operations from the host;
• receiving, through the first communication connection and from the host, first data that the host requests to write into a first address of the first memory space, wherein the first data is received as memory semantic operations comprising byte-level addressing operations;
• establishing, through a network, a second communication connection with the storage node;
• writing, through the second communication connection and into the second memory space of the storage node, the first data by converting the memory semantic access operations received from the host to remote direct memory access (RDMA) network protocol operations for transmitting the first data to the storage node;
• and
• storing a first correspondence between a physical address of the second memory space and the first address, wherein the first correspondence maps byte-level addresses from the memory semantic access operations to physical addresses of the second memory space.