Patent ID: 7774641
Filing Date: 2010-08-10
Classification: G06F

Abstract:
1. A storage subsystem comprising: a plurality of drive units including a storage medium for storing data; a plurality of first switch devices including a plurality of ports and connecting at least one of the plurality of drive units to at least one of the plurality of ports therein; a first disk controller connecting at least one of the plurality of first switch devices and configured to control the plurality of drive units; a plurality of second switch devices including a plurality of ports and connecting at least one of the plurality of drive units to at least one of the plurality of ports therein, each of the plurality of second switch devices corresponding to each of the plurality of first switches; and a second disk controller connected to at least one of the plurality of second switch devices and configured to control the plurality of drive units, wherein at least one of the plurality of ports in each of the plurality of first switch devices and at least one of the plurality of ports in each of the corresponding plurality of second switch devices are interconnected.