Method and apparatus for adjusting performance of logical volume copy destination

• US 20060179220A1
• Filed: 03/17/2006
• Published: 08/10/2006
• Est. Priority Date: 12/20/2002
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Miyazaki, Satoshi, Soejima, Kenichi
• Granted Patent: US 7,415,587 B2
• Time in Patent Office: Days
• US Class Current: 711/114
• CPC Class Codes: G06F 11/1084 Degraded mode, e.g. caused by single or multiple storage removals or disk failures
• CPC Class Codes: G06F 11/1096 Parity calculation or recalculation after configuration or reconfiguration of the system

Abstract

When data written into a volume (source volume) in a parity group in a storage apparatus is written into a volume (destination volume) in a parity group in a storage apparatus using a remote copy function, it is determined during the copy whether or not one or both of the following two specified conditions are satisfied for this set of volumes: (1) the performance of the destination volume after a failover is equal to or higher than the performance of the source volume before the failover; and (2) the performance of the destination volume is equal to or higher than the performance of the source volume during the copy. If the condition(s) is not satisfied, the storage apparatus in which the destination volume is defined is changed in configuration to satisfy the condition.

Claims

1-12. -12. (canceled)

13. A computer system comprising:

a first storage system including plurality of physical disk devices, at least one of which are configured to a first logical volume, and providing a first logical volume with a first computer for storing a first data via a network and,

a second storage system being coupled to the first storage system via a communication line, including plurality of physical disk devices, at least one of which are configured to a second logical volume, and providing the second logical volume with a second computer via a network, the second logical volume to related to the first logical volume with a second computer,

wherein the first storage system transfers, to the second storage system, a second data which is copied of the first data, and transfers, to the second storage system, a first information related to configuration of the first logical volume when an event related to the first logical volume is occurred,

wherein the second storage system stores the second data to the second logical volume when the second data is received from the first storage system via the communication line, and changes configuration of the second logical volume related to the first logical volume when the first information is received via the communication line.

14. A computer system according to claim 13, wherein the first storage system changes configuration of the first logical volume when the event related to changing of moving data between the physical disk devices is occurred, the first storage system transfers, to the second storage system, the first information including the changing of the configuration of the first logical volume.

15. A computer system according to claim 14, wherein the first storage system moves data in the storing the first logical volume to the second storage physical disk device from the first storage physical disk device, there are different performance between those of the first physical disk device and the second physical disk device, changes the configuration of the first logical volume, and transfers, to the second storage system via the communication line, the first information including the changing of the configuration at the first logical volume.

16. A computer system according to claim 15,

wherein the second storage system includes a third physical disk device which is configured to the second logical volume and a forth physical disk device,

when the first information is received, the second storage system moves data in the second logical volume from the third physical disk device to the forth physical disk device.

17. A computer system according to claim 14,

when the first information is received, the second storage system moves data which has been stored to the second logical volume between physical disk devices to change a physical disk device corresponding to the second logical volume as the configuration related to the second logical volume.

18. A computer system according to claim 17,

wherein the first information includes information related to first performance of the physical devices of the first storage system,

wherein the second storage system holds information related to second performance of the physical disk devices of the second storage system and specifies physical disk devices on the basis of the first performance and the second performance when the first information is received.

19. A primary storage system comprising:

a network interface coupled to a secondary storage system via a communication line and a first computer via a network;

a controller is coupled to the network interface;

a memory is coupled to the controller; and

,

plurality of disk devices at least one of which are configured to a first logical volume which being provided with the secondary storage systems and the first computer, the first logical volume related to one of second logical volume provided by the secondary storage system;

wherein the controller writes a first data to the physical disk device is corresponding to the logical volume sends, to the secondary storage system, an copy instruction for storing a second data copied of the first data to the second logical volume, and sends, to the secondary storage system, information related to configuration of the first logical volume when physical disk devices being configured to the first logical volume is changed.

20. A secondary storage system comprising:

an network interface coupled to a primary storage system via a communication line and a secondary computer via a network, the primary storage system including the first logical volume provided with a first computer via a network and writing a first data to physical disk devices are corresponding to the first logical volume;

a controller is coupled to the network interface;

a memory is coupled to the controller; and

, plurality of disk devices at least one of which are configured to a second logical volume being provided with the primary storage systems and the secondary computer, the second logical volume related to the first logical volume;

wherein the memory stores performance information related to performance of physical devices,

wherein the controller receives, from the primary storage system via the communication line an copy instruction for storing a second data copied of the first data to the second logical volume, receives nom the primary storage system via the communication line, notification related to configuration of the first logical volume when physical disk devices being configured to the first logical volume is changed, and specifies, on the basis of the notification and the performance information, a physical disk device to be configured to the second logical volume, to move the second data between the physical devices in the secondary storage system.