Storage system and method of operating the same

A method of operating a storage system, comprising:

• reading, by a host system, first address mapping data buffered in a controller buffer memory of a first user Solid State Drive (SSD) when a flush condition for the first address mapping data corresponding to the first user SSD is satisfied in the first user SSD, and second address mapping data corresponding to a second user SSD from a controller buffer memory of the second user SSD;
• outputting, by the host system, the first address mapping data read from the controller buffer memory of the first user SSD to a meta SSD;
• and
• flushing, by the meta SSD, the first address mapping data output from the host system to a nonvolatile memory device of the meta SSD.

A storage system, comprising:

• a flash array including first to n-th user Solid State Drives (SSDs) and a first meta SSD, where n is a natural number of 2 or more;
• and
• a host system coupled to the flash array,
• wherein each of the first to n-th user SSDs and the first meta SSD comprises a controller buffer memory and a nonvolatile memory device, and
• wherein the nonvolatile memory device of the first meta SSD is configured to store first to n-th pieces of address mapping data respectively corresponding to the first to n-th user SSDs, and
• wherein the host system is configured to read the first to n-th pieces of address mapping data stored in the nonvolatile memory device of the first meta SSD during a boot operation, and store the read first to n-th pieces of address mapping data in the respective controller buffer memories of the first to n-th user SSDs.