Storage apparatus and command execution control method

A command execution control method comprising:

• determining, by a storage apparatus, a type of a command received via a communication interface and instructing data access to a memory device;
• counting, by the storage apparatus, a number of commands currently being executed among commands received via the communication interface;
• performing, by the storage apparatus, data access to the memory device according to a command newly received via the communication interface when the number of commands currently being executed is less than or equal to a limit value corresponding to the type of the newly received command;
• and
• preventing, by the storage apparatus, the data access when the number of commands currently being executed exceeds the limit value.

A computer-readable storage medium storing a computer program, the computer program causing a built-in computer of a storage apparatus to perform a procedure comprising:

• determining a type of a command received via a communication interface and instructing data access to a memory device;
• counting, among commands received via the communication interface, a number of commands currently being executed;
• performing, when the number of commands currently being executed is less than or equal to a limit value corresponding to the type of a command newly received via the communication interface, data access to the memory device according to the newly received command;
• and
• preventing the data access when the number of commands currently being executed exceeds the limit value.