Apparatus and method to implement retry algorithms when providing information from a primary storage system to a remote storage system
US7240132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Feb 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1443
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method to provide information from a first information storage and retrieval system to a second information storage and retrieval system, where the first information storage and retrieval system comprises (N) PPRC adapters and information. The method generates and saves an Established Path Bitmap which recites the (N) PPRC adapters, and generates an Available Path Bitmap. If a PPRC adapter is in communication with the secondary storage system, then the method adds that adapter to the Available Path Bitmap. The primary information storage and retrieval system generates a PPRC task comprising a flag set to “off”. The method copies the Available Path Bitmap as a Working Bitmap, and generates a PPRC request comprising a flag set to “on”, selects one of the adapters recited in the Working Bitmap, and provides the PPRC request to that selected adapter. The method then once attempts to provide information to the second information storage and retrieval system using the selected adapter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.