System and method for concurrent logical device swapping
US7085956B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | Jul 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for concurrently performing logical device swaps for at least one logical subsystem, comprising: concurrently performing the following for each logical subsystem of each computer system prior to the occurrence of an event calling for logical device swaps—receiving a list of data storage device pairs, each pair comprising a first device and a corresponding second device and placing each listed second data storage device into a pseudo-online state; and concurrently performing the following for each logical subsystem of each computer system upon the occurrence of an event calling for logical device swaps—replacing a binding to each listed first device with a binding to each corresponding listed second device, wherein the binding causes I/O requests to be directed to the listed first device prior to the replacement, and further wherein the binding causes I/O requests to be directed to the corresponding listed second device subsequent to the replacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.