Patent ID: 9158477
Filing Date: 2015-10-13
Classification: G06F

Abstract:
1. A method for maintaining state information, comprising: identifying, with a processor of a computer, an available node affiliated with an unavailable device adapter and an unavailable node affiliated with an available device adapter, wherein the available node is assigned a first subset of disk arrays, and wherein the unavailable node is assigned a second subset of disk arrays; affiliating the available device adapter with the available node; updating first state information of the available node that describes a state of the first subset of disk arrays with second state information of the unavailable node that describes a state of the second subset of disk arrays, wherein the available node and the unavailable node are part of a storage subsystem, and wherein the storage subsystem transfers the second state information from the unavailable node to the available node so that the available node includes the first state information and the second state information; and providing access to the first subset of disk arrays and the second subset of disk arrays through the available node and the available device adapter using the updated first state information.