Method for reporting redundant controllers as independent storage entities
US7847801B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | May 19, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method, apparatus, and computer usable program code are provided for managing dual active controllers in a high availability storage configuration. Redundant dual active controllers in high availability storage configurations are made to appear as individual storage target devices to a host system. Each controller owns certain volumes of data storage. When a host system sends a request to identify available data volumes, the controller that owns certain volumes provides preferred paths to those owned volumes. The host system may also send an inquiry to a controller that asks the controller about data volumes not owned by the controller. For such inquiries, no paths to the non-owned data volumes are returned to the host system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.