Management device for name of virtual port

• US 20050010688A1
• Filed: 08/28/2003
• Published: 01/13/2005
• Est. Priority Date: 06/17/2003
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Murakami, Toshihiko, Kumagai, Atsuya, Iwami, Naoko
• Granted Patent: US 7,996,560 B2
• Time in Patent Office: Days
• US Class Current: 709/245
• CPC Class Codes: G06F 13/4081 Live connection to bus, e.g. hot-plugging current or voltage limitation during live insertion H02H9/004

Abstract

A method is provided with which a name of a virtual port is not changed when virtualized storage is moved among switches. Information about a creator and a borrower of name information is added to a table including name information and address information of a virtual port of a name server managing the name information and the address information. The name information is provided to plural switches and managed. In addition, name information, which can be used commonly among name servers managing the name information and the address information is pooled in advance, and the name information of the virtual port is borrowed from there.

Claims

1. An information processing system including:

a first switch;

a first storage system connected to the first switch;

a second switch connected to the first switch; and

a second storage system connected to the second switch,

the first switch comprising;

plural ports for making connection to the first storage system and the second switch;

a CPU controlling the first switch; and

a memory storing a first program and information,

wherein the first program is provided with a section for, when a virtualized storage not existing physically is moved from the second switch to the first switch, setting a virtual port of the virtualized storage, a section for associating the virtualized storage with the first storage system, a section for sending a request to borrow a port name of a virtual port at the time when the virtualized storage exists in the second switch to the second switch, a section for receiving the port name from the second switch, and a section for setting the received port name in a virtual port of the virtualized storage moved to the first switch.

2. An information processing system according to claim 1 wherein the memory stores the port name associating it with a logical unit number of the first storage system, and lender information indicating a lender of the port name.

3. An information processing system according to claim 1, wherein:

the second switch is provided with plural ports for making connection with the second storage system and the first switch, a CPU controlling the second switch, and a memory storing a second program and information, and

the second program is provided with a section for receiving a request to borrow the port name from the first switch and a section for sending a port name corresponding to the request to the first switch.

4. In an information processing system having plural switches connected to each other, a first switch comprising:

plural ports for making connection with other switches;

a CPU controlling the first switch; and

a memory storing a first program and information,

wherein the memory is provided with a common area storing a port name which is commonly used by the plural switches.

5. An information processing system according to claim 4, wherein:

the first switch is connected to a first storage system, and

the first program is provided with a section for acquiring the port name from the common area, a section for setting a virtual port of a virtualized storage not existing physically, a section for associating the virtualized storage with the first storage system, and a section for setting the acquired port name in the virtual port.

6. An information processing system according to claim 4, wherein:

a second switch is connected to a second storage system and is provided with a port for making connection with the first switch, a CPU controlling the second switch, and a memory storing a second program and information, and

the second program is provided with a section for setting a virtual port of a virtualized storage not existing physically, a section for associating the virtualized storage and the second storage system, a section for sending a request to borrow a port name of the virtual port stored in the common area to the first switch, a section for receiving the port name from the second switch, and a section for setting the received port name in the virtual port.

7. A first switch connected to a first storage system and a second switch, the first switch comprising:

plural ports for making connection to the first storage system and the second switch;

a CPU controlling the first switch; and

a memory storing a first program and information,

wherein the first program is provided with a section for, when a virtualized storage not existing physically is moved from the second switch to the first switch, setting a virtual port of the virtualized storage, a section for associating the virtualized storage with the first storage system, a section for sending a request to borrow a port name of a virtual port at the time when the virtualized storage exists in the second switch to the second switch, a section for receiving the port name from the second switch, and a section for setting the received port name in a virtual port of the virtualized storage moved to the first switch.

8. A first switch according to claim 7, wherein the memory stores the port name associating it with a logical unit number of the first storage system, and lender information indicating a lender of the port name.

9. A first switch connected to a second switch, the first switch comprising:

plural ports for making connection with the second switch;

a CPU controlling the first switch; and

a memory storing a program and information, wherein the memory is provided with a common area storing a port name which is commonly used by the first and second switches.

10. A first switch according to claim 9, wherein:

the first switch is connected to a first storage system, and

the first program is provided with a section for acquiring the port name from the common area, a section for setting a virtual port of a virtualized storage not existing physically, a section for associating the virtualized storage with the first storage system, and a section for setting the acquired port name in the virtual port.

11. A second switch connected to a second storage system and a first switch, the second switch comprising:

plural ports for making connection to the second storage system and the first switch;

a CPU controlling the second switch; and

a memory storing a program and information,

wherein the program is provided with a section for receiving a request to borrow a port name from the first switch, and a section for sending a port name corresponding to the request to the first switch.

12. A second switch according to claim 11 wherein the memory is provided with a common area storing a port name which is commonly used by the first and second switches.