Patent ID: 8423713
Filing Date: 2013-04-16
Classification: G06F

Abstract:
1. A cluster type storage system, comprising: a plurality of nodes coupled to a plurality of clients via a network; and a plurality of disk array apparatuses coupled to each of the nodes, and the each of the nodes is coupled to one another via an internal network, and executes data input/output processing with respect to each of the disk array apparatuses based on an access request from any client among the plurality of clients, wherein the each of the nodes: comprises a logical volume which is an access target of each of the clients, manage each of the logical volumes in association with a global namespace which is provided to each of the clients as a single namespace common to each of the nodes, and a local namespace provided to each of the clients as a namespace for specifying each of the nodes, manages storage areas of each of the logical volumes by dividing these storage areas into global namespace storage areas representing the access destination if the global namespace has been added to the access request, and into local namespace storage areas representing the access destination if the local namespace has been added to the access request, and take the proportion of the capacity occupied by the global namespace storage area against the overall capacity of each of the logical volumes as an adjustment target,