Patent ID: 11861204
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 8:
9. The storage system according to claim 3, wherein the first storage node comprises an IO controller, the IO controller stores the index table and communicates with a computing node, and is configured to:
receive second data and a second logical address of the second data from the computing node;
identify a second global address of the second data based on the second logical address;
determine whether a second physical address has been allocated to the second global address, based on the index table; and
in response to determining that the second physical address has not been allocated to the second global address, allocate the second physical address from the first tier;
write the second data into a physical space indicated by the second physical address; and
record a mapping relationship between the second globe address and the second physical address.