Method and apparatus for testing a storage system

摘要

A method and a system for testing a storage system to which is applied a command or a sequence of commands. The storage system has a storage medium 2 and a controller 3, and each command results in an outcome (which may be for example success or failure). The method comprises: storing in a dataset 14 information related to the command 17 and/or the sequence of commands including for each command 8 an address 156 of the storage system the command 8 is applied to, and an outcome of the command. When a sequence of commands is applied, the information stored in the dataset 14 includes an outcome of the sequence of commands. This method further comprises selecting one or more commands from the dataset to be subsequently replayed when the outcome of the at least one command indicates an error. The outcome of the at least one command may be a fault which may be an error on the storage medium address or an error internal to the storage medium or a faulty behavior of the storage system. Alternatively the fault may be an error which occurred during transportation of data between the controller and the storage medium and in particular where the delay between command and response is longer or excessive as compared to a predetermined delay.