Method for searching matching key of storage device and server system including the same

A matching key search method of a server system including a storage device, the storage device including a nonvolatile memory device and a buffer memory. The matching key search method includes receiving a search command for a keyword from a host, reading data from a memory area of the memory device corresponding to an address included in the search command and storing the read data in the buffer memory, determining whether the read data matches the keyword, transmitting a result of the determining to the host without transmitting the read data to the host, and generating a matching key table with reference to the result of the determining and storing the generated matching key table in the buffer memory.