Patent ID: 11947419
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 8:
9. An operation method of a storage server including a plurality of storage devices and a storage node configured to manage the plurality of storage devices, the method comprising:
receiving, at the storage node, a first write request including a first object identifier and first data from an external client server;
performing, at the storage node, a hash operation on the first data to generate a first hash value;
determining, at the storage node, a first hash range, in which the first hash value is included, from among a plurality of hash ranges respectively assigned to the plurality of storage devices;
transmitting, at the storage node, a second write request including the first object identifier, the first data, and the first hash value to a first storage device corresponding to the first hash range from among the plurality of storage devices;
performing, at the first storage device, the hash operation on the first data included in the second write request to generate a second hash value;
storing, at the storage device, the first data in an area corresponding to a first physical address and updating a first entry to include the first physical address and a first reference count when the first and second hash values match and the first entry is empty in a first table;
increasing, at the first storage device, the first reference count of the first entry corresponding to the first hash value when the first and second hash values match and the first entry is present in the first table, without the storing of the first data; and
transmitting, at the first storage device, a completion response to the storage node,
wherein the storage device does not perform a mapping operation between logical addresses and physical addresses.