Apparatus and method for partitioning and managing subsystem logics

A disk array system, comprising:

• a port receiving data from an information processing device;
• a logical unit provided for said information processing device and relating to a storage region;
• a RAID (Redundant Array of Independent Disks) group relating to a plurality of disk drives, said disk drives storing a plurality of data and a parity data related to data sent from said information processing device and including said storage region;
• a plurality of logical resources having said port, said logical unit and said RAID group;
• a plurality of physical resources including said disk drives;
• a plurality of resource groups each having one or more said logical resources and one or more said physical resources;
• and
• wherein, in order to change configuration in a first resource group of said resource groups, said first resource is permitted to change from a first state of relating between said 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 without being permitted to change to a third state of relating to a fourth resource in a second resource group of said resource groups.

A disk array system, comprising:

• a plurality of ports each receiving data from an information processing device;
• a plurality of logical units provided for said information processing device and relating to a plurality of storage regions;
• a plurality of disk drives having said storage regions;
• a plurality of ECC (Error Check and Correct) groups relating to said disk drives and each of said ECC groups storing a plurality of data and a parity data related to data sent from said information processing device;
• a first plurality of resources having said ports, said logical units, said disk drives and said ECC groups;
• a second plurality of resources having plural types of resources in said first plurality of resources;
• and
• a plurality of resource groups each having said second plurality of resources;
• wherein, in order to change configuration in one of said resource groups, said one of said resource groups can be permitted to change a relationship between said second plurality of resources in said one of said resource groups and can not be permitted to change a relationship between one of said second plurality of resources in said one of said resource groups and another of said second plurality of resources in another resource group of said resource groups.

A disk array system, comprising:

• a port receiving data sent from an information processing device;
• a logical unit provided for said information processing device to store data and relating to a storage region;
• a logical unit provided for said information processing device to store data and relating to a storage region;
• a plurality of disk drives having said storage region;
• a RAID (Redundant Array of Independent Disks) group relating to said disk drives, said disk drives storing a plurality of data and a parity data related to data sent from said information processing device;
• and
• a plurality of resource groups each having plural types of resources among said port, said logical unit, said disk drives and said RAID group and each of said resource groups being logically partitioned by logical partitions;
• wherein, in order to change configuration in one of said resource groups, said one of said resource groups is permitted to change a relationship between said plural types of resources in said one of said resource groups and is not permitted to change a relationship between one resource in said one of said resource groups and another resource in another resource group of said resource groups.

A disk array system, comprising:

• a port receiving data sent from an information processing device;
• a first controller transferring data received by said port;
• a memory storing data in accordance with controlling by said first controller;
• a second controller transferring data stored in said memory;
• a disk drive group storing data transferred by said second controller and having a plurality of disk drives;
• a logical unit number being an address to which data is sent from said information processing device and corresponding to a storage region in said disk drive group;
• a plurality of resource groups each having said port, a part or all of said first controller, a part or all of said memory, a part or all of said second controller, said disk drive group, and said logical unit number;
• and
• wherein, in order to change configuration in a first resource group of said resource groups, a first resource in said first resource group is permitted to change from a first state of relating to a second resource in said first resource group into a second state of relating to a third resource in said first resource group and is not permitted to change from said first state into a third state of relating to a fourth resource in a second resource group of said resource groups.

A disk array system, comprising:

• a port receiving data sent from an information processing device;
• a logical unit number provided for said information processing device and relating to said port;
• a RAID (Redundant Array of Independent Disks) group relating to a plurality of disk drives, said disk drives storing a plurality of data and a parity data related to data sent from said information processing device to said port;
• a plurality of logical resources having said port, said logical unit number and said RAID group;
• a plurality of physical resources having said disk drives;
• a plurality of resource groups each having one or more of said logical resources and one or more of said physical resources;
• wherein, in response to a request for changing configuration in a first resource group of said resource groups, a first resource in said first resource group can be permitted to change from a first state of relating between said 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 and can be not permitted to change said first state into a third state of relating between said first resource and a fourth resource in a second resource group of said second resource groups.