Storage network migration method, management device, management program and storage network system

A storage network management device for use in a storage network system comprising at least one storage device, at least one host computer, a first storage network and a second storage network connecting said storage device and said host computer, a storage network management device, and a management network via which said storage network management device is connected to said storage device and said host computer, wherein said storage network management device manages a data extent migration in which a first data extent included in said storage device and connected to said first storage network is migrated to a second data extent included in said storage device and connected to said second storage network, said storage network management device comprising:

• a processor unit;
• a management interface connected to said management network via a management network path;
• an input device;
• an output device;
• and
• a communication bus interconnecting said processor unit, said management interface, said input device, and said output device,
• wherein said processor unit acquires information on a network interface of the storage network, connected to the storage device or the host computer, from the storage device and the host computer via the management network and stores the acquired information as storage network configuration information;
• wherein said processor unit receives identification information on the first data extent, identification information on the second data extent, and attribute information set in the first data extent sent from the storage device including the first data extent;
• wherein said processor unit converts the attribute information set in the first data extent to attribute information to be stored in the second data extent, based on the stored storage network configuration information, the received identification information on the first data extent, and the identification information on the second data extent;
• and
• wherein said processor unit sends the converted attribute information to the storage device including the second data extent.

A storage network management program for use in a storage network system comprising at least one storage device, at least one host computer, a first storage network and a second storage network connecting said storage device and said host computer, a storage network management device, and a management network via which said storage network management device is connected to said storage device and said host computer, wherein said storage network management program is stored in said storage network management device that manages a data migration in which a first data extent included in said storage device and connected to said first storage network is migrated to a second data extent included in said storage device and connected to said second storage network, said storage network management program causing said storage network management device to:

• acquire information on a network interface of the storage network, connected to the storage device or the host computer, from the storage device and the host computer via the management network and store the acquired information as storage network configuration information;
• receive identification information on the first data extent, identification information on the second data extent, and attribute information set in the first data extent sent from the storage device including the first data extent;
• convert the attribute information stored in the first data extent to attribute information to be stored in the second data extent based on the stored storage network configuration information, the received identification information on the first data extent, and the identification information on the second data extent;
• and
• send the converted attribute information to the storage device including the second data extent.

A storage network system comprising:

• a first storage device including a first data extent;
• a second storage device including a second data extent;
• a first host computer which accesses the first data extent;
• a second host computer which accesses the first and second data extents;
• a third host computer which accesses the second data extent;
• a first storage network to which said first storage device and said first and second host computers are connected;
• a second storage network to which said second storage device and said second and third host computers are connected;
• a data copy network to which said first and second storage devices are connected;
• a storage network management device which acquires information on network interfaces of said first and second storage networks, to which said first and second storage devices and said first, second, and third host computers are connected, from said first and second storage devices and said first, second, and third host computers for managing a data extent migration;
• a storage management device which acquires configuration information on said first and second storage devices from said first and second storage devices, receives identification information on the first and second data extents and attribute information to be set in the first data extent, and sends the acquired and received information to said storage network management device;
• a name server which resolves an iSCSI name;
• and
• a management network to which said first and second storage devices, said first, second, and third host computers, said storage management device, said storage network management device, and said name server are connected.