Storage system with primary mirror shadow
US7360044B2 · kind B2 · utility
7Cited by
11References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2004 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Aug 30, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2087
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system with primary mirror shadow comprises a storage array, and a controller. The controller is capable of predefining storage array volumes as a primary volume that is subsequently paired with a secondary volume, emulating a primary logical device and a plurality of secondary logical devices including a shadow logical device, tracking volumes and logical devices using a pointer, and instantaneously evoking a volume copy by a pointer exchange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.