Redirection of storage access requests
US7366846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Jan 6, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are a method, system, and article of manufacture, wherein a controller receives a request from one of a plurality of hosts. The controller determines whether a primary storage control unit coupled to the controller is operational. A response is generated by accessing the primary storage control unit, in response to determining that the primary storage control unit is operational. The response is generated by accessing a secondary storage control unit, in response to determining that the primary storage control unit is not operational, wherein data is replicated synchronously from the primary storage control unit to the secondary storage control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.