Storage unit replacement using point-in-time snap copy
US9619331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Dec 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, I/O operations may be swapped from an original storage unit to a replacement storage unit in a manner which can reduce or eliminate delays caused by copying of data from the original storage unit to the replacement storage unit. A point-in-time snap copy relationship between the original storage unit and the replacement storage unit of storage locations is established and I/O operations are swapped from the original storage unit to the replacement storage unit. The I/O operations are resumed, accessing the replacement storage unit instead of the original storage unit in the input/output operations issued by the at least one host. Other aspects are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.