Patent ID: 8117387
Filing Date: 2012-02-14
Classification: G06F

Abstract:
1. A storage system, comprising: a plurality of NAS apparatuses configured to provide a plurality of virtual file servers respectively to a plurality of host apparatuses; a storage apparatus operatively connected to the plurality of NAS apparatuses and including a plurality of drive units in which a plurality of logical units to be accessed by the plurality of virtual file servers are formed and a first controller and a second controller that control access by the plurality of virtual file servers to the plurality of logical units; and a management apparatus including a user interface and operatively connected to the plurality of NAS apparatuses and the storage apparatus, wherein the management apparatus sends a first send request for acquiring first performance information to the plurality of NAS apparatuses, and receives the first performance information sent from the plurality of NAS apparatuses in reply to the first send request, while the management apparatus sends a second send request for acquiring second performance information to the storage apparatus, and receives the second performance information sent from the storage apparatus in reply to the second send request, wherein the first performance information includes a first I/O amount per unit time in relation to a first virtual file server and a first port coupled to the first controller, a second I/O amount per unit time in relation to the first virtual file server and a second port coupled to the second controller, a third I/O amount per unit time in relation to a second virtual file server and the first port coupled to the first controller, and a fourth I/O amount per unit time in relation to the second virtual file server and the second port coupled to the second controller, wherein the second performance information includes a first total operating ratio of the first controller and a second total operating ratio of the second controller, wherein the management apparatus calculates a first operating ratio of the first controller regarding the first virtual file server based on the first total operating ratio, the first I/O amount per unit time, and the third I/O amount per unit time, a second operating ratio of the first controller regarding the second virtual file server based on the first total operating ratio, the first I/O amount per unit time, and the third I/O amount per unit time, a third operating ratio of the second controller regarding the first virtual file server based on the second total operating ratio, the second I/O amount per unit time, and the fourth I/O amount per unit time, and a fourth operating ratio of the second controller regarding the second virtual file server based on the second total operating ratio, the second I/O amount per unit time, and the fourth I/O amount per unit time, and wherein the management apparatus displays system performance information including the calculated first operating ratio, the calculated second operating ratio, the calculated third operating ratio, and the calculated fourth operating ratio on the user interface, and, if a value of one of the calculated first operating ratio, the calculated second operating ratio, the calculated third operating ratio, and the calculated fourth operating ratio is greater than a predetermined threshold value, adds a specific item to one of the calculated first operating ratio, the calculated second operating ratio, the calculated third operating ratio, and the calculated fourth operating ratio.