Storage system and data processing system

• US 20060242373A1
• Filed: 06/23/2006
• Published: 10/26/2006
• Est. Priority Date: 08/04/2004
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Hirakawa, Yusuke, Asaka, Yoshihiro
• Granted Patent: US 7,296,126 B2
• Time in Patent Office: Days
• US Class Current: 711/162
• CPC Class Codes: G06F 11/2069 Management of state, configuration or failover
• CPC Class Codes: G06F 11/2074 Asynchronous techniques
• CPC Class Codes: G06F 11/2082 Data synchronisation
• CPC Class Codes: G06F 2003/0697 device management, e.g. handlers, drivers, I/O schedulers
• CPC Class Codes: G06F 2201/855 Details of asynchronous mirroring using a journal to transfer not-yet-mirrored changes
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems

Abstract

A storage system comprises a data set storage region or storing a data set containing data and update data for managing this data, and a control section. The data set storage region is divided into a plurality of storage regions including a first storage region and a second storage region. The control section generates a first data set containing first data and first update data which is update data for same, stores at least the first data of this first data set in the first storage region, generates a second data set containing second data and second update data which is update data for same, and stores at least the second data of this second data set in the second storage region, which is separate from the first storage region.

Claims

1-14. -14. (canceled)

15. A storage system, comprising:

a first storage device coupled to an information processing device and having a first controller and a plurality of first disk drives, a first portion of said first disk drives being related to a first logical volume as a primary logical volume and a plurality of second portions of said first disk drives being related to a plurality of second logical volumes;

said first controller receiving a plurality of data, which are sent from said first information processing device and are targeted to said first logical volume, and storing a plurality of data corresponding to said plurality of data sent from said first information processing device in said first portion of said first disk drives and storing a plurality of data corresponding to said plurality of data sent from said first information processing device in said second portions of said first disk drives in alternate shifts and transferring a plurality of data corresponding to said plurality of data stored in said second portions of said first disk drives to a second storage device;

said second storage device coupled to said first storage device and having a second controller and a plurality of second disk drives, a third portion of said second disk drives being related to a third logical volume as a secondary volume forming a pair relationship with said primary volume;

said second controller receiving said plurality of data transferred from said first controller and storing a plurality of data corresponding to said plurality of data transferred from said first controller in said third portion of said second storage device.

16. A storage system according to claim 15, further comprising:

a fourth portion of said second disk drives in said second storage device being related to at least one fourth logical volume;

wherein said second controller stores said plurality of data transferred from said first controller in said fourth portion of said second disk drives and stores a plurality of data corresponding to said plurality of data stored in said fourth portion of said second disk drives in said third portion of said second storage device after storing stores said plurality of data in said fourth portion of said second disk drives.

17. A storage system according to claim 15, further comprising:

a plurality of fourth portions of said second disk drives in said second storage device being related to a plurality of fourth logical volumes;

wherein said second controller stores said plurality of data transferred from said first controller in said fourth portions of said second disk drives in alternate shifts and stores a plurality of data corresponding to said plurality of data stored in said fourth portion of said second disk drives in said third portion of said second storage device after storing stores said plurality of data in said fourth portions of said second disk drives in alternate shifts.

18. A storage system according to claim 17:

wherein said second controller reads said plurality of data stored in said fourth portion of said second disk drives in said third portion of said second storage device in alternate shifts.

19. A storage system according to claim 18:

wherein said second controller reads said plurality of data stored in said fourth portion of said second disk drives in alternate shifts.

20. A storage system according to claim 18:

wherein said second controller reads said plurality of data stored in said fourth portion of said second disk drives in alternate shifts based on maintaining a data consistency with said first logical volume.

21. A storage system according to claim 17:

wherein said second controller stores said plurality of data stored in said fourth portion of said second disk drives in said third portion of said second storage device based on maintaining a data consistency with said first logical volume.

22. A storage system according to claim 15:

wherein said first controller manages a relationship between said plurality of data stored in said second portions of said first disk drives and a storage area information of said second portions of said first disk drives.

23. A storage system according to claim 22:

wherein said first controller transfers to said second controller said relationship between said plurality of data stored in said second portions of said first disk drives and a storage area information of said second portions of said first disk drives.

24. A storage system according to claim 15:

wherein said first controller has a first information indicating that said first logical volume functions as said primary logical volume and a second information indicating that said second logical volume functions as a logical volume being used to transfer data;

wherein said second controller has a third information indicating that said third logical volume functions as said secondary logical volume.

25. A storage system, comprising:

a first storage device coupled to an information processing device and having a first controller and a plurality of first disk drives, a first portion of said first disk drives being related to a first logical volume as a primary logical volume and a plurality of second portions of said first disk drives being related to a plurality of second logical volumes;

said first controller receiving a plurality of data, which are sent from said first information processing device and are targeted to said first logical volume, and storing a plurality of data corresponding to said plurality of data sent from said first information processing device in said first logical volume and storing a plurality of data corresponding to said plurality of data sent from said first information processing device in said second logical volumes in alternate shifts and transferring a plurality of data corresponding to said plurality of data stored in said second logical volumes to a second storage device;

said second storage device coupled to said first storage device and having a second controller and a plurality of second disk drives, a third portion of said second disk drives being related to a third logical volume as a secondary volume forming a pair relationship with said primary volume;

said second controller receiving said plurality of data transferred from said first controller and storing a plurality of data corresponding to said plurality of data transferred from said first controller in said third logical volume.

26. A storage system according to claim 25, further comprising:

a fourth portion of said second disk drives in said second storage device being related to at least one fourth logical volume;

wherein said second controller stores said plurality of data transferred from said first controller in said fourth logical volumes and stores a plurality of data corresponding to said plurality of data stored in said fourth logical volumes in said third logical volume after storing stores said plurality of data in said fourth logical volumes.

27. A storage system according to claim 25, further comprising:

a plurality of fourth portions of said second disk drives in said second storage device being related to a plurality of fourth logical volumes;

wherein said second controller stores said plurality of data transferred from said first controller in said fourth logical volumes in alternate shifts and stores a plurality of data corresponding to said plurality of data stored in said fourth logical volumes in said third logical volume after storing stores said plurality of data in said fourth logical volumes in alternate shifts.

28. A storage system according to claim 27:

wherein said second controller reads said plurality of data stored in said fourth logical volumes in said third logical volume of said second storage device in alternate shifts.

29. A storage system according to claim 28:

wherein said second controller reads said plurality of data stored in said fourth logical volumes in alternate shifts.

30. A storage system according to claim 28:

wherein said second controller reads said plurality of data stored in said fourth logical volumes in alternate shifts based on maintaining a data consistency with said first logical volume.

31. A storage system according to claim 27:

wherein said second controller stores said plurality of data stored in said fourth logical volumes in said third logical volume based on maintaining a data consistency with said first logical volume.

32. A storage system according to claim 25:

wherein said first controller manages a relationship between said plurality of data stored in said second logical volumes and a storage area information of said second logical volumes.

33. A storage system according to claim 32:

wherein said first controller transfers to said second controller said relationship between said plurality of data stored in said second logical volumes and a storage area information of said second logical volumes.

34. A storage system according to claim 25:

wherein said first controller has a first information indicating that said first logical volume functions as said primary logical volume and a second information indicating that said second logical volume functions as a logical volume being used to transfer data;

wherein said second controller has a third information indicating that said third logical volume functions as said secondary logical volume.