1. An error generating apparatus of a solid state drive tester, the error generating apparatus comprising: a host terminal for receiving a test condition for a test of a storage from a user; and a test control unit for creating a test pattern according to the test condition or creating a test pattern randomly, generating error data used to test an error characteristic of the storage, and testing the storage based on the test pattern and a normal instruction or an error instruction which is formed by inserting the error data into the normal instruction.