Storage system and storage control device
AssigneeHitachi, Ltd.
InventorsSeiichi Higaki, Akinobu Shimada, Yoshinori Okami, Toshio Nakano
Life of this patent
Estimating the term…
Abstract
A first storage control device is provided with a virtual LU for showing a logical volume possessed by a second storage control device as if it were its own volume. When data processing requested from a host device is, for example, a specific processing of large load (such as direct backup, logical volume copy, and so on), whether or not the requested processing can be executed by the second storage control device is judged. When it is executable, a command is transmitted to the second storage control device to make it take over the processing.
Claims23
A virtualization system, comprising:
- a first storage system having a first storage controller, a plurality of first disk drives and a first logical volume related to at least one of said first disk drives;
- a first virtualization device having a first virtual volume related to the first logical volume of the first storage system;
- a second storage system having a second storage controller, a plurality of second disk drives and a second logical volume related to at least one of said second disk drives;
- and
- a second virtualization device having a second virtual volume related to the second logical volume of the second storage system, wherein
- the first and second virtualization devices are adapted to configure to copy data between the first and second virtual volumes, and the first and second storage systems are adaptive to configure to copy data between the first and second logical volumes.
A virtualization method, comprising the steps of:
- providing a first storage system having a first storage controller, a plurality of first disk drives, and a first logical volume related to at least one of said first disk drives, and a first virtualization device having a first virtual volume related to the first logical volume of the first storage system;
- providing a second storage system having a second storage controller, a plurality of second disk drives, and a second logical volume related to at least one of said second disk drives, and a second virtualization device having a second virtual volume related to the second logical volume of the second storage system;
- copying data between the first and second virtualization devices so as to effect copying of data between the first and second virtual volumes;
- and
- copying data between the first and second storage systems so as to effect copying of data between the first and second logical volumes.
A virtualization method for a system comprising a first storage system having a first storage controller, a plurality of first disk drives and a first logical volume related to at least one of said first disk drives, a first virtualization device having a first virtual volume related to the first logical volume of the first storage system, a second storage system having a second storage controller, a plurality of second disk drives and a second logical volume related to at least one of said second disk drives, and a second virtualization device having a second virtual volume related to the second logical volume of the second storage system, the method comprising the steps of:
- relating said first logical volume related to at least one of said first disk drives;
- relating said second logical volume related to at least one of said second disk drives;
- copying data between the first and second virtual volumes via copying if data related to the first and second virtualization devices;
- and
- copying data between the first and second logical volumes via copying if data related to the first and second storage systems.
Dependencies are inferred from the claim text.