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

Claim 17:
18. The method according to claim 14, wherein the first storage node comprises an IO controller storing the index table and communicating with a computing node, and the method further comprises:
receiving, by the IO controller, second data and a second logical address of the second data from the computing node;
identifying, by the IO controller, a second global address of the second data based on the second logical address;
determining, by the IO controller, 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, allocating, by the IO controller, the second physical address from the first tier;
writing, by the IO controller, the second data into a physical space indicated by the second physical address; and
recording, by the IO controller, a mapping relationship between the second globe address and the second physical address.