Zero configuration auto-discovery for networks storage

• US 20040160973A1
• Filed: 02/12/2003
• Published: 08/19/2004
• Est. Priority Date: 02/12/2003
• Status: Abandoned Application

• Current Assignee: Emulex Corporation (Broadcom, Inc.)
• Original Assignee: Emulex Corporation (Broadcom, Inc.)
• Inventors: Jones, Marc Timothy
• Application Number:
  US10/365,963
• Publication Number:
  US 20040160973A1
• Time in Patent Office: Days
• US Class Current: 370/419
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/165 Combined use of TCP and UDP protocols; selection criteria therefor

Abstract

An adapter for a client of a storage network may perform a port scan on the network to identify storage targets, e.g., (Internet SCSI (Small Computer System Interface)) targets. The adapter may then send a resource discovery command to the identified storage targets to identify available storage resource(s) at the storage targets.

Claims

1. A method comprising:

scanning a network for open ports associated with storage targets;

identifying one or more storage targets having one of said open ports; and

sending a resource discovery command to said one or more identified storage targets.

2. The method of claim 1, wherein said scanning comprises scanning for open iSCSI (Internet SCSI (Small Computer System Interface)) ports.

3. The method of claim 2, wherein said sending the resource discovery command comprises sending a SendTargets command.

4. The method of claim 1, further comprising receiving a list identifying one or more storage resources from each of said one or more identified storage targets.

5. The method of claim 4, wherein said list includes addresses for available storage resources.

6. The method of claim 4, wherein said one or more storage resources include at least one disk in a disk drive.

7. The method of claim 1, wherein the network comprises a local network, and

further comprising defining a discovery radius including one or more remote networks.

8. The method of claim 7, further comprising:

identifying one or more routers between the local network and a remote network in said one or more remote networks;

traversing said one or more routers to said remote network;

scanning said remote network for open ports associated with storage targets;

identifying one or more storage targets having one of said open ports in said remote network;

sending a resource discovery command to said one or more identified storage targets; and

receiving a list identifying one or more storage resources from each of said one or more identified storage targets in the remote network.

9. An apparatus comprising:

a scanning module operative to scan hosts in a network for open ports associated with storage targets and identify one or more storage targets; and

a discovery module operative to send a resource discovery command to said one or more identified storage targets.

10. The apparatus of claim 9, wherein the scanning module is operative to scan hosts in the network for targets with open iSCSI ports.

11. The apparatus of claim 10, wherein the discovery module is operative to send a SendTargets command to said one or more identified storage targets.

12. The apparatus of claim 11, wherein the network comprises a local network, and

further comprising a adapter including the scanning module and the discovery module, the adapter being configured with a discovery radius including one or more remote networks.

13. The apparatus of claim 12, wherein the adapter is operative to

identify one or more routers between the local network and a remote network in said one or more remote networks,

traverse said one or more routers to said remote network,

scan hosts in said remote network for open ports associated with storage targets;

identify one or more storage targets in said remote network; and

send a resource discovery command to said one or more identified storage targets.

14. A system comprising:

a local network including

a plurality of hosts, one or more of said hosts including an open ISCSI port and one or more storage resources, and

a client including an adapter operative to

scan the local network for open iSCSI ports,

identify hosts having iSCSI ports, and

send a SendTargets command to each of said identified hosts.

15. The system of claim 14, wherein the adapter is configured with a discovery radius including one or more remote networks.

16. The apparatus of claim 15, wherein the adapter is operative to

identify one or more routers between the local network and a remote network in said one or more remote networks,

traverse said one or more routers to said remote network,

scan hosts in said remote network for open iSCSI ports;

identify hosts having open ISCSI ports; and

send a SendTargets command to said one or more identified hosts.

17. An article comprising a machine-readable medium including machine-executable instructions operative to cause a machine to:

scan a network for open ports associated with storage targets;

identify one or more storage targets having one of said open ports; and

send a resource discovery command to said one or more identified storage targets.

18. The article of claim 17, wherein the instructions operative to cause the machine to scan comprise instruction operative to cause the machine to scan for open iSCSI (Internet Small Computer System Interface) ports.

19. The article of claim 18, wherein the instructions operative to cause the machine to send the resource discovery command comprise instructions operative to cause the machine to send a SendTargets command.

20. The article of claim 17, further comprising instructions operative to cause the machine to receive a list identifying one or more storage resources from each of said one or more identified storage targets.

21. The article of claim 20, wherein said list includes addresses for available storage resources.

22. The article of claim 20, wherein said one or more storage resources include at least one disk in a disk drive.

23. The article of claim 17, wherein the network comprises a local network.

24. The article of claim 23, further comprising instructions operative to cause the machine to:

identify one or more routers between the local network and a remote network in a discovery radius;

traverse said one or more routers to said remote network;

scan said remote network for open ports associated with storage targets;

identify one or more storage targets having one of said open ports in said remote network;

send a resource discovery command to said one or more identified storage targets; and

receive a list identifying one or more storage resources from each of said one or more identified storage targets in the remote network.