Patent ID: 7363455
Filing Date: 2008-04-22
Classification: G06F

Abstract:
1. A disk array system, comprising: a port receiving data sent from a first information processing device; a logical unit provided for said first information processing device to store data and relating to a storage region; a plurality of disk drives having said storage region; a plurality of RAID (Redundant Array of Independent Disks) groups relating to said disk drives, said disk drives storing a plurality of data and a parity data related to data sent from said first information processing device; and a plurality of resource groups each having a plurality of resources among said port, said logical unit, said disk drives and said RAID groups, wherein a first resource group of said resource groups is managed by a first manager, said first manager being different from a second manager which manages a second resource group of said resource groups, wherein said first resource group is changed from a first state of relating between a first resource and a second resource in said first resource group into a second state of relating between said first resource and a third resource in said first resource group if said first manager changes configuration in said first resource group according to a configuration change request which relates to a relation between said port and said RAID groups, wherein said first resource group is defined according to a first policy such that, in a partition assigned to said first manager, a logical unit is generated by selecting a logical device from a disk unit group to which no other partitions are assigned and in which no disk unit group is present from which I/O is controlled via a same adapter, and wherein according to the first policy, said first manager is permitted to see resources in said first resource group end change between the first state and the second state such that said port is related to a first RAID group in the first state and said port is related to a second RAID group in the second state.