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

• US 20060041595A1
• Filed: 10/19/2004
• Published: 02/23/2006
• Est. Priority Date: 08/19/2004
• Status: Abandoned Application

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Kaneda, Yasunori, Taguchi, Yuichi, Miyazaki, Fumi
• Application Number:
  US10/969,437
• Publication Number:
  US 20060041595A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]

Abstract

A method and means for reducing the workload on a system administrator are provided for use in the migration of a storage device or a storage network. A storage network management device is connected to all storage devices and host computers related to the migration via a management network. This configuration allows the storage network management device to acquire configuration information on the network and attribute information on the data extents of the storage devices from the storage devices and the host computers related to the migration. Therefore, the storage network management device can control the migration of configuration management information across different networks by referring to the acquired information.

Claims

1. A storage network migration method 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 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 migration method comprising:

a first step by said storage network management device which 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 network configuration information;

a second step, by the storage device including the first data extent, which receives information identifying the first data extent and the second data extent, adds and stores the received information in storage configuration information thereof, and sends the stored information and attribute information stored in the first data extent to said storage network management device;

a third step by said storage network management device which converts the attribute information stored in the first data extent to attribute information to be stored in the second data extent based on the storage network configuration information stored in said first step and the information sent from said storage device in said second step;

a fourth step by said storage network management device which sends the attribute information, converted in said third step, to the storage device including the second data extent; and

a fifth step, by the storage device including the second data extent, which adds and stores the attribute information sent from said storage network management device in said fourth step to storage configuration thereof as attribute information in the second data extent.

2. The storage network migration method according to claim 1, further comprising:

a sixth step, executed by said storage network management device between said third step and said fourth step, which receives the same attribute information as the attribute information in the second data extent and adds the received attribute information to the attribute information in the second data extent.

3. The storage network migration method according to claim 1,

wherein said storage network system includes a storage management device connected to said management network;

and

wherein said storage management device executes said second step in place of the storage device including the first data extent.

4. The storage network migration method according to claim 1,

wherein said attribute information is set in a data extent and includes identification information on a host computer having access permission for the data extent.

5. The storage network migration method according to claim 1,

wherein a network protocol of the first storage network is different from a network protocol of the second storage network.

6. The storage network migration method according to claim 1,

wherein a network protocol of the first storage network is a network protocol based on Fibre Channel and a network protocol of the second storage network is a network protocol based on iSCSI (Internet Small Computer System Interface) and

wherein identification information on the host computer included in the attribute information stored in the first data extent is a WWPN (World Wide Port Number) and identification information on the host computer included in the attribute information stored in the second data extent is an iSCSI name.

7. The storage network migration method according to claim 1,

wherein a network protocol of the first storage network is a network protocol based on iSCSI and a network protocol of the second storage network is a network protocol based on Fibre Channel;

and

wherein identification information on the host computer included in the attribute information stored in the first data extent is an iSCSI name and identification information on the host computer included in the attribute information stored in the second data extent is a WWPN.

8. 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.

9. The storage network management device according to claim 8,

wherein, before converting the attribute information set in the first data extent to the attribute information to be stored in the second data extent, said processor unit receives the same attribute information as the attribute information in the second data extent and adds the received attribute information to the attribute information in the second data extent.

10. The storage network management device according to claim 8,

wherein said attribute information is set in a data extent and includes identification information on a host computer having access permission for the data extent.

11. The storage network management device according to claim 8,

wherein a network protocol of the first storage network is different from a network protocol of the second storage network.

12. The storage network management device according to claim 8,

wherein a network protocol of the first storage network is a network protocol based on Fibre Channel and a network protocol of the second storage network is a network protocol based on iSCSI;

and

wherein identification information on the host computer included in the attribute information stored in the first data extent is a WWPN and identification information on the host computer included in the attribute information stored in the second data extent is an iSCSI name.

13. The storage network management device according to claim 8,

wherein a network protocol of the first storage network is a network protocol based on iSCSI and a network protocol of the second storage network is a network protocol based on Fibre Channel;

and

wherein identification information on the host computer included in the attribute information stored in the first data extent is an iSCSI name and identification information on the host computer included in the attribute information stored in the second data extent is a WWPN.

14. 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.

15. The storage network management program according to claim 14, said program further causing said storage network management device to receive the same attribute information as the attribute information in the second data extent before converting the attribute information set in the first data extent to attribute information to be stored in the second data extent, and add the received attribute information to the attribute information in the second data extent.

16. The storage network management program according to claim 14,

wherein said attribute information is set in a data extent and includes identification information on a host computer having access permission for the data extent.

17. The storage network management program according to claim 14,

wherein a network protocol of the first storage network is different from a network protocol of the second storage network.

18. The storage network management program according to claim 14,

wherein a network protocol of the first storage network is a network protocol based on Fibre Channel and a network protocol of the second storage network is a network protocol based on iSCSI;

and

wherein identification information on the host computer included in the attribute information stored in the first data extent is a WWPN and identification information on the host computer included in the attribute information stored in the second data extent is an iSCSI name.

19. The storage network management program according to claim 14,

wherein a network protocol of the first storage network is a network protocol based on iSCSI and a network protocol of the second storage network is a network protocol based on Fibre Channel;

and

wherein identification information on the host computer included in the attribute information stored in the first data extent is an iSCSI name and identification information on the host computer included in the attribute information stored in the second data extent is a WWPN.

20. 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.