Memory system and test method thereof

摘要

According to one embodiment, two memory systems each including a memory and a controller are connected via a communication line. The controller includes a testing unit that performs a self-test process on the memory, a communication unit that communicates with the counterpart controller, and a status output unit. The communication unit performs a startup synchronization process which is performed before the self-test process and a termination synchronization process which is performed after the self-test process. The testing unit obtains a comprehensive test result from the test results of the two memory systems, and the status output unit of one memory system outputs the comprehensive test result.

主权项

1. A memory system comprising:
two storage devices, the two storage devices each including a storage unit and a controller, each of the controllers being configured to transmit data between a host device and the storage unit, and the two storage devices being connected via a communication line so that bidirectional communication can be performed, wherein each of the controllers includes:
a testing unit that performs a self-test process on the storage unit connected to the controller;a communication unit that performs communication with another controller via the communication line; anda result output unit that outputs test results of the two storage devices obtained by the testing unit, whereinthe communication unit performs a first synchronization process making the testing unit of each of the two storage devices execute the self-test process at a predetermined point, and a second synchronization process in which a termination synchronization frame including a test result of one of the storage devices including the controller is transmitted to another one of the storage devices via the communication line after the self-test process is terminated and the termination of the self-test process is synchronized between the two storage devices,the testing unit performs a comprehensive test result determination process of obtaining a comprehensive test result from the test result of the one storage device and the test result of the other one of the storage devices obtained in the second synchronization process, and the result output unit of either one of the two storage devices outputs the comprehensive test result obtained by the testing unit.