Storage device capable of performing peer-to-peer data transfer and operating method thereof

An operating method of a storage device that includes a non-volatile memory, a cache memory and a storage controller and is connected to an external storage device through a switch, the operating method comprising:

• receiving, from an external host, a first request including a source address related to the external storage device, a destination address related to the storage device, and cache update information indicating an update method of the cache memory;
• providing a second request including the source address to the external storage device;
• receiving, from the external storage device, a first response including first data corresponding to the source address;
• generating a first physical address of a first type indicating a cache area of the cache memory based on the destination address;
• generating a second physical address of a second type indicating a storage area of the non-volatile memory based on the destination address;
• storing the first data to the storage area of the non-volatile memory indicated by the second physical address of the second type;
• and
• updating the cache area indicated by the first physical address of the first type based on the cache update information.

A storage device connected to an external storage device through a switch, the storage device comprising:

• a non-volatile memory;
• and
• a storage controller,
• wherein the storage controller comprises:
• a cache memory configured to store a piece of data stored in the non-volatile memory;
• an interface circuit configured to receive, from an external host, a first request including a source address indicating a storage area of the non-voltage memory, a destination address indicating a storage area of the external storage device, and cache update information indicating an update method of the cache memory, provide a second request including the destination address and first data corresponding to the source address to the external storage device, and receive, from the external storage device, a response corresponding to the second request;
• a buffer memory configured to temporarily store the first data corresponding to the source address;
• an address translation circuit configured to generate a first physical address of a first type based on the source address;
• and
• a cache controller configured to update a cache area indicated by the first physical address of the first type based on the cache update information.

A storage device connected to an external storage device through a switch, the storage device comprising:

• a non-volatile memory;
• and
• a storage controller,
• wherein the storage controller comprises:
• a cache memory configured to store a piece of data stored in the non-volatile memory;
• an interface circuit configured to receive from an external host, a first request including a source address indicating one of a storage area of the external storage device or a storage area of the non-volatile memory, a destination address indicating a remaining one of the storage area of the external storage device or a storage area of the non-volatile memory, and cache update information indicating an update method of the cache memory, provide, to the external storage device, a second request including one of the source address or the destination address;
• a buffer memory configured to temporarily store data corresponding to the source address or the destination address;
• an address translation circuit configured to generate a first physical address of a first type indicating a cache area of the cache memory based on a remaining one of the source address or the destination address;
• and
• a cache controller configured to update the cache area indicated by the first physical address of the first type based on the cache update information.