METHOD AND SYSTEM FOR MANAGING STORAGE CAPACITY IN A STORAGE NETWORK

• US 20100106933A1
• Filed: 10/27/2008
• Published: 04/29/2010
• Est. Priority Date: 10/27/2008
• Status: Active Grant

• Current Assignee: NetApp, Inc.
• Original Assignee: NetApp, Inc.
• Inventors: Palsule, Anurag, Kamila, Shailaja, Voll, James J., Padinjarel, Ramanathan S., Deulgaonkar, Ameet
• Granted Patent: US 9,274,714 B2
• Time in Patent Office: Days
• US Class Current: 711/171
• CPC Class Codes: G06F 11/3409 for performance assessment
• CPC Class Codes: G06F 11/3485 for I/O devices
• CPC Class Codes: G06F 2201/81 Threshold
• CPC Class Codes: G06F 3/0605 by facilitating the interaction with a user or administrator
• CPC Class Codes: G06F 3/0629 Configuration or reconfiguration of storage systems
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD
• CPC Class Codes: H04L 43/0817 by checking functioning
• CPC Class Codes: H04L 43/16 Threshold monitoring
• 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 for managing configuration of a storage network having multiple storage resources is disclosed. The system uses a storage management policy to set parameters for detecting storage resource problems in the storage network. The system monitors the storage resources in the storage network based on the storage management policy. Based on the monitoring, the system detects limited storage resource conditions, and identifies one or more potential solutions to the condition. After identifying potential solutions, the system simulates effects on the storage resources of implementing individual solutions. Based on the simulations, the system then implements one or more selected solutions. These solutions may be selected automatically or by a user.

Claims

1. A machine-implemented method comprising:

accessing a storage management policy for evaluating a status of individual storage resources in a storage network, the storage management policy defining a threshold level of usage of a storage resource in the storage network;

monitoring the storage network based on the storage management policy;

detecting a limited storage resource condition of the storage network based on the monitoring, wherein the limited storage resource condition is detected when the amount of storage used in the storage resource exceeds the threshold level;

identifying one or more potential solutions to the limited resource condition;

for an individual solution of the one or more potential solutions, simulating effects on the plurality of storage resources of implementing the individual solution;

determining a set of tasks required to execute a selected solution;

determining dependences between tasks in the set of tasks; and

modifying the storage network by executing the set of tasks according to the determined dependencies.

2. The method of claim 1, wherein the plurality of storage resources includes a plurality of logical volumes and the one or more potential solutions includes shrinking a selected logical volume of the plurality logical volumes.

3. The method of claim 1, wherein simulating effects comprises determining a cost of implementing the individual solution.

4. The method of claim 1, wherein simulating effects comprises determining an amount of storage space made available by implementing the individual solution.

5. The method of claim 1, further comprising:

presenting simulated effects of the individual solution of the one or more potential solutions to a user; and

receiving information from the user indicating the selected solution.

6. The method of claim 1, further comprising automatically selecting the selected solution from the one or more possible solutions without relying on any user input selecting the solution.

7. The method of claim 1, wherein the storage network is network attached storage.

8. The method of claim 1, wherein the storage network is a storage area network.

9. A computer system comprising:

a memory;

a processor coupled to the memory;

a solution identifier component configured to identify one or more potential solutions in response to a limited storage resource condition in a storage network having a plurality of storage resources;

a simulation component configured to simulate effects of implementing individual solutions of the one or more potential solutions; and

an execution component configured to execute a selected solution of the one or more potential solutions.

10. The system of claim 9, further comprising:

a monitoring component configured to detect the limited storage resource condition.

11. The system of claim 9, wherein the execution component comprises:

a task component configured to determine a set of tasks required to execute the selected solution; and

a dependency component configured to determine dependencies between the tasks in the set of tasks,

wherein the execution component is further configured to execute the set of tasks according to the determined dependencies.

12. The system of claim 9, further comprising:

a policy storage component configured to store a storage management policy; and

a monitoring component configured to detect the limited storage resource condition based on the storage management policy.

13. The system of claim 9, further comprising:

a policy storage component configured to store a storage management policy, the storage management policy defining a threshold level of usage of an individual storage resource in the storage network; and

a monitoring component configured to detect the limited storage resource condition when the amount of storage used in the individual storage resource exceeds the threshold level.

14. The system of claim 9, further comprising an input component configured to receive information from a user selecting a solution from the one or more potential solutions.

15. The system of claim 9, wherein the one or more potential solutions includes compressing data stored in the storage network.

16. The method of claim 9, wherein the one or more potential solutions includes modifying a storage quota associated with the storage network.

17. The system of claim 9, wherein the storage network is network attached storage.

18. The system of claim 9, wherein the storage network is a storage area network.

19. A machine-implemented method comprising;

identifying one or more potential solutions to a limited storage resource condition in a storage network having a plurality of storage resources; and

for an individual solution of the one or more potential solutions, simulating effects on the plurality of storage resources of the individual solution; and

modifying the storage network based on a selected solution of the one or more potential solutions.

20. The method of claim 19, further comprising monitoring the storage network to detect the limited storage resource condition.

21. The method of claim 19, further comprising receiving configuration information defining a target configuration of the storage network, wherein the one or more potential solutions are identified based on configuration information.

22. The method of claim 19, wherein the storage network stores data using a plurality of data units and the one or more potential solutions includes de-duplicating redundant data units.

23. The method of claim 19, wherein the storage network comprises a plurality of backup snapshots and simulating effects comprises determining storage space made available by deleting one or more backup snapshots of the plurality of backup snapshots.

24. The method of claim 19, further comprising automatically selecting the selected solution from the one or more possible solutions.

25. The method of claim 19, further comprising providing a suggested solution based on the simulated effects.

26. The method of claim 19, wherein the storage network is network attached storage.

27. The method of claim 19, wherein the storage network is a storage area network.