System and method for managing zone integrity in a storage area network

• US 7,991,809 B2
• Filed: 06/04/2007
• Issued: 08/02/2011
• Est. Priority Date: 06/04/2007
• Status: Expired due to Fees

• Current Assignee: Computer Associates Think Inc. (Broadcom, Inc.)
• Original Assignee: Computer Associates Think Inc. (Broadcom, Inc.)
• Inventors: Yellapragada, Subrahmanya Sarma
• Primary Examiner(s): Alam; Shahid
• Assistant Examiner(s): LAWSON, DONALD L
• Application Number:
  US11/757,676
• Publication Number:
  US 20080301147A1
• Time in Patent Office: 1,520 Days
• Field of Search: 707/827, 707/829
• US Class Current: 707/827
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/12 Discovery or management of network topologies
• CPC Class Codes: H04L 41/22 comprising specially adapted graphical user interfaces [GUI]
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

A system and method for managing zone integrity in a storage area network (SAN) is provided. A SAN fabric may be partitioned into one or more zone sets, where each zone set may include a plurality of zones. A topology of any of the zones may be modified, without compromising zone integrity, by converting the zone into a topologically dynamic zone. The zone may be converted by redefining members of the zone in terms of their respective member definitions, which may be specific attributes used to identify the members in the fabric. As such, zone integrity may be preserved when a topology of any member of the converted zone is modified.

Claims

1. A method for managing zone integrity in a storage area network, wherein the storage area network includes a switched fabric having a logical zoning that partitions the switched fabric into one or more zones that belong to one or more zone sets, the method comprising:

selecting at least one of the one or more zones associated with the switched fabric, wherein the selected zone has one or more members;

creating one or more member definitions to uniquely identify the one or more members in the selected zone based on attributes uniquely associated with the one or more member, wherein the one or more member definitions remain bound to the one or more members regardless of changes to a physical topology associated with the switched fabric; and

converting the selected zone into a topologically dynamic zone, wherein converting the selected zone into the topologically dynamic zone includes;

clearing the one or more members from the selected zone; and

replacing the one or more members cleared from the selected zone with the one or more member definitions to populate the selected zone and convert the selected zone into the topologically dynamic zone, wherein having the one or more member definitions in the topologically dynamic zone remain bound to the one or more members enables relocating the one or more members within the physical topology associated with the switched fabric without affecting the logical zoning that partitions the switched fabric.

2. The method of claim 1, wherein the one or more members include one or more of a port or a node having one or more ports.

3. The method of claim 2, wherein the one or more member definitions include one or more of a port World Wide Name or a node World Wide Name that implicitly identifies the port World Wide Name.

4. The method of claim 1, wherein the one or more members include a switch port and the created member definition associated with the switch port uniquely identifies a non-switch port endpoint connected to the switch port.

5. The method of claim 1, wherein the one or more zone sets include an active zone having a transit zone, and wherein converting the selected zone into the topologically dynamic zone further includes:

adding the one or more member definitions to the transit zone associated with the active zone, wherein the one or more member definitions added to the transit zone are used to replace the one or more members cleared from the selected zone; and

clearing the one or more member definitions from the transit zone in response to populating the selected zone and converting the selected zone into the topologically dynamic zone, wherein clearing the one or more member definitions from the transit zone enables using the transit zone to convert additional zones into topologically dynamic zones.

6. A computer readable medium storing computer executable instructions for managing zone integrity in a storage area network, wherein the storage area network includes a switched fabric having a logical zoning that partitions the switched fabric into one or more zones that belong to one or more zone sets, wherein executing the computer-executable instructions on a processing device causes the processing device to:

select at least one of the one or more zones associated with the switched fabric, wherein the selected zone has one or more members;

create one or more member definitions to uniquely identify the one or more members in the selected zone based on attributes uniquely associated with the one or more member, wherein the one or more member definitions remain bound to the one or more members regardless of changes to a physical topology associated with the switched fabric; and

convert the selected zone into a topologically dynamic zone, wherein to convert the selected zone into the topologically dynamic zone, the computer-executable instructions further cause the processing device to;

clear the one or more members from the selected zone; and

replace the one or more members cleared from the selected zone with the one or more member definitions to populate the selected zone and convert the selected zone into the topologically dynamic zone, wherein having the one or more member definitions in the topologically dynamic zone remain bound to the one or more members enables relocating the one or more members within the physical topology associated with the switched fabric without affecting the logical zoning that partitions the switched fabric.

7. The computer readable medium of claim 6, wherein the one or more members include one or more of a port or a node having one or more ports.

8. The computer readable medium of claim 7, wherein the one or more member definitions include one or more of a port World Wide Name or a node World Wide Name that implicitly identifies the port World Wide Name.

9. The computer readable medium of claim 6, wherein the one or more members include a switch port and the created member definition associated with the switch port uniquely identifies a non-switch port endpoint connected to the switch port.

10. The computer readable medium of claim 6, wherein the one or more zone sets include an active zone having a transit zone, and wherein to convert the selected zone into the topologically dynamic zone, the computer-executable instructions further cause the processing device to:

add the one or more member definitions to the transit zone associated with the active zone, wherein the one or more member definitions added to the transit zone are used to replace the one or more members cleared from the selected zone; and

clear the one or more member definitions from the transit zone in response to populating the selected zone and converting the selected zone into the topologically dynamic zone, wherein clearing the one or more member definitions from the transit zone enables using the transit zone to convert additional zones into topologically dynamic zones.

11. A system for managing zone integrity in a storage area network, wherein the storage area network includes a switched fabric having a logical zoning that partitions the switched fabric into one or more zones that belong to one or more zone sets, the system comprising one or more processing devices configured to:

select at least one of the one or more zones associated with the switched fabric, wherein the selected zone has one or more members;

create one or more member definitions to uniquely identify the one or more members in the selected zone based on attributes uniquely associated with the one or more member, wherein the one or more member definitions remain bound to the one or more members regardless of changes to a physical topology associated with the switched fabric; and

convert the selected zone into a topologically dynamic zone, wherein to convert the selected zone into the topologically dynamic zone, the one or more processing devices are further configured to;

clear the one or more members from the selected zone; and

replace the one or more members cleared from the selected zone with the one or more member definitions to populate the selected zone and convert the selected zone into the topologically dynamic zone, wherein having the one or more member definitions in the topologically dynamic zone remain bound to the one or more members enables relocating the one or more members within the physical topology associated with the switched fabric without affecting the logical zoning that partitions the switched fabric.

12. The system of claim 11, wherein the one or more members include one or more of a port or a node having one or more ports.

13. The system of claim 12, wherein the one or more member definitions include one or more of a port World Wide Name or a node World Wide Name that implicitly identifies the port World Wide Name.

14. The system of claim 11, wherein the one or more members include a switch port and the created member definition associated with the switch port uniquely identifies a non-switch port endpoint connected to the switch port.

15. The system of claim 11, wherein the one or more zone sets include an active zone having a transit zone, and wherein to convert the selected zone into the topologically dynamic zone, the one or more processing devices are further configured to:

add the one or more member definitions to the transit zone associated with the active zone, wherein the one or more member definitions added to the transit zone are used to replace the one or more members cleared from the selected zone; and

clear the one or more member definitions from the transit zone in response to populating the selected zone and converting the selected zone into the topologically dynamic zone, wherein clearing the one or more member definitions from the transit zone enables using the transit zone to convert additional zones into topologically dynamic zones.