Storage system, computer system, and control method
US11836110B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2022 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Mar 11, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An object of the invention is to reduce a data transfer amount between storage systems. Provided is a storage system connected to another storage system via a network. The storage system includes a memory, a processor configured to execute a program stored in the memory, and a storage device. By executing the program, the processor provides a virtual volume, generates a plurality of snapshots at different timings for the virtual volume, holds a base snapshot, which is a reference snapshot among the plurality of snapshots, in the storage device, and transmits difference data indicating a difference between a snapshot generated after the base snapshot and a snapshot generated immediately before the snapshot to the other storage system and holds the difference data in the other storage system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.