Multiple storage array control

• US 6,944,654 B1
• Filed: 11/01/1999
• Issued: 09/13/2005
• Est. Priority Date: 11/01/1999
• Status: Expired due to Term

• Current Assignee: Emc IP Holding Company LLC (Dell Technologies Inc.)
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Lubovich, Ilya, Murphy, Joseph G.
• Primary Examiner(s): Vaughn, Jr., William C.
• Application Number:
  US09/431,758
• Time in Patent Office: 2,143 Days
• Field of Search: 709/201, 709/223, 709/203, 709/224, 709/315, 709/316, 709/331, 707/103.R, 707/102, 707/101, 707/103, 707/103.Y, 719/331, 719/332
• US Class Current: 709/223
• CPC Class Codes: G06F 11/3034 where the computing system component is a storage system, e.g. DASD based or network based digital input from or digital output to record carriers G06F3/06; digital recording or reproducing G11B20/18; 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], H04L67/1097
• CPC Class Codes: G06F 11/3055 Monitoring arrangements for monitoring the status of the computing system or of the computing system component, e.g. monitoring if the computing system is on, off, available, not available error or fault processing without redundancy G06F11/0703; error detection or correction by redundancy in data representation G06F11/08; error detection or correction by redundancy in operation G06F11/14; error detection or correction by redundancy in hardware G06F11/16
• CPC Class Codes: G06F 11/328 Computer systems status display G06F11/327 takes precedence
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems
• CPC Class Codes: G06F 3/0673 Single storage device
• 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]
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A network architecture facilitates the monitoring and control of a number of storage systems (e.g., arrays) by one or more clients. In particular, the network architecture includes at least one storage management server, connected between the storage systems and a number of clients, for providing operation status information associated with the storage systems as well as storage connectivity devices to at least one of the clients.

Claims

1. A network architecture for management of a storage area network by at least one client which is independent of the storage area network, the network architecture comprising:

a storage system including a plurality of storage devices;

a plurality of host computers connected to the storage system through a first communications network, the host computers including corresponding agents for gathering operation status information associated with the storage area network;

at least one storage management server in communication with the plurality of host computers via the corresponding agents to retrieve the operation status information, the at least one storage management server being adapted to communicate with the at least one client via a web-based second communications network; and

the at least one storage management server providing the operation status information received from the corresponding agents to the at least one client via use of the web-based second communications network and an object request broker in the at least one storage management server for ensuring that the at least one client is able to access the at least one storage management server, wherein the at least one storage management server further provides information relating to an operation status of storage connectivity devices, which connect storage devices to the host computers, based on communications with the agents; and

the at least one storage management server including;

a poller for gathering information relating to an operation status of the storage devices and the storage connectivity devices; and

a central repository for storing the operation status information;

an object server for distributing the information relating to an operation status of the storage devices and storage connectivity devices to the at least one client.

2. The network architecture of claim 1 wherein the poller polls the corresponding agents at predetermined intervals to maintain a current status of an operation of the storage devices.

3. The network architecture of claim 2 wherein the predetermined intervals are less than one minute.

4. The network architecture of claim 1 wherein the at least one storage management server further includes a security component for limiting access by the at least one client to the storage devices.

5. The network architecture of claim 1 wherein the at least one storage management server further includes a web server for communicating with the at least one client.

6. The network architecture of claim 1 wherein each of the at least one client includes a graphical user interface for displaying information relating to an operation status of the storage devices.

7. The network architecture of claim 1 wherein the at least one host computer includes a plurality of host computers, the host computers running different types of operating systems.

8. The network architecture of claim 1 wherein the plurality of storage devices are of different types.

9. The network architecture of claim 1 further comprising a plurality of storage management servers, each connected between the host computers and a plurality of clients, each storage management server providing information relating to an operation status of the storage devices to the plurality of clients.

10. The network architecture of claim 1 wherein the at least one management server includes at least two management servers each of the at least two one storage management servers including:

a poller for gathering the operation status information relating to an operation status of the storage devices;

a central repository for storing the operation status information; and

an object server for distributing the information relating to the operation status of the storage devices to the at least one client, wherein the object server and the at least one client communicate via use of the object request broker.

11. The network architecture of claim 10, wherein the at least one storage management server includes a plurality of storage management servers, the network architecture further comprising a name server, which is connected to communicate with the plurality of storage management servers to determine which central respository of the plurality of storage management servers includes information relating to an operation status of a given one of the storage devices.

12. The network architecture of claim 1 wherein the second communications network is an Intranet.

13. The network architecture of claim 1 wherein the first communications network is a Fibre Channel network.

14. A method of managing a storage area network by at least one client independent of the storage area network, the storage area network including:

a storage system including a plurality of storage devices;

a plurality of host computers connected to the storage system through a first communication network, each host computer capable of transmitting data to and retrieving data from at least one of the plurality of storage devices;

the method comprising;

providing a storage management server between the at least one client and the plurality of storage devices, the storage management server being adapted to connect to the at least one client via a web-based second communication network and being in communication with the plurality of host computers via corresponding agents in the host computers;

at the storage management server;

i) gathering information relating to an operation status of the plurality of storage devices and the storage connectivity devices based on communications with the corresponding agents, the storage connectivity devices connecting the host computers the storage devices, and ii) storing the operation status information in a central repository;

via an object server of the storage management server, distributing the operation status information relating to an operation status of the storage devices and the storage connectivity devices to the at least one client; and

wherein the storage management server and the at least one client communicate via an object request broker in the storage management server for ensuring that the at least one client is able to access the storage management server.

15. The method of claim 14 further comprising polling the storage devices at predetermined intervals to maintain a current status of the configuration of the storage system.

16. The method of claim 14 wherein the second communications network is an Intranet.

17. The method of claim 14 wherein the first communications network is a Fibre Channel network.

18. A method as in claim 14, wherein the operation status information indicates that a particular channel in the storage area network is inundated with traffic as a result of a large number of I/O (Input/Output) requests, the method further comprising:

notifying a given client of the at least one client about an occurrence of the large number of I/O requests, the given client, in turn, opting to run an application using another storage system to improve data throughput.

19. A method as in claim 14 further comprising:

via the storage management server, providing the operation status information to the at least one client, facilitating distribution of management responsibilities among multiple clients, which have different responsibilities and access rights with respect to objects in the central repository of the management server.

20. A method as in claim 19, wherein the operation status information includes at least one of type, properties and status of storage connectivity devices in the storage network.

21. A method as in claim 14, wherein distributing the operation status information enables a client of the at least one client to check a status of resources of the storage area network that affects a throughput of data requested from the plurality of storage devices.

22. A method as in claim 14 further comprising:

via the storage management server, operating in conjunction with another storage management server to manage and distribute operation status information to the at least one client.

23. A method as in claim 14 further comprising:

providing a naming service to determine whether the storage management server, which is part of a group of storage management servers, includes information relating to a storage device of interest as specified by a particular client.

24. A method as in claim 14 further comprising:

limiting access to the operation status information in the management server to clients with appropriate privileges.

25. A method as in claim 14, wherein the storage network includes connectivity devices for forwarding data packets, between the host computers and the storage devices, to appropriate ports based on addresses of the data packets;

and

wherein retrieving the operation status information from the host computers includes initiating communication with the host computers to discover a configuration associated with at least one of the host computers, storage devices, and connectivity devices associated with the storage network.

26. A method as in claim 25 further comprising:

initiating communication with a given agent of a corresponding host computer to identify a date and time associated with a detected change to the configuration.

27. A method as in claim 14 further comprising:

identifying a configuration change to the storage area network which includes a change associated with at least one of;

i) the host computers, ii) the storage devices, and iii) the connectivity devices; and

based on detecting the configuration change, notifying an appropriate client registered to be notified of an occurrence of the configuration change.

28. A method as in claim 14, wherein distributing the operation status information to a given client enables the given client to generate, on a corresponding user'"'"'s display screen, a topology map identifying a configuration of resources associated with the storage area network.

29. A method as in claim 28, wherein providing the operation status information enables the given client to display a topology map illustrating connectivity of the storage systems, the host computers, and the connectivity devices associated with the storage network.

30. A method as in claim 29, wherein the corresponding user'"'"'s display screen includes a sub-window listing storage arrays of the storage area-network accessible by the given client.