Accessing data in a dual volume data storage system using virtual identifiers
US9223513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2013 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage system, and a method for accessing data in a data storage system, wherein the data storage system comprises at least a first volume and a second volume, and the first volume and the second volume remain consistent by a synchronous copy relationship, the method comprising: setting a virtual unique identifier of the second volume as a unique identifier of the first volume; creating a first path from a host to the first volume and a second path from the host to the second volume by using the unique identifier of the first volume; accessing data by using the first path from the host to the first volume; and setting the second path from the host to the second volume as unavailable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.