Storage system including data transfer speed manager and method for changing data transfer speed thereof

A storage system, comprising:

• a storage device;
• and
• a host connected to the storage device through an interface, the host configured to transfer data to the storage device,
• wherein the host is configured to change a data transfer speed between the host and the storage device according to an application.

A method of changing a data transfer speed of a storage system that includes a host and a storage device, the method comprising:

• receiving identification information of an application;
• calculating a predetermined transfer speed based on the identification information and a link speed table;
• requesting a device driver to change a data transfer speed of an interface to the predetermined transfer speed;
• and
• changing the data transfer speed of the interface in response to the predetermined transfer speed provided through the device driver.