Storage system creating a recovery request enabling execution of a recovery and comprising a switch that detects recovery request point events
US8327183B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2009 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Sep 23, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A switch connected to a network system including a computer and a storage apparatus: controlling read/write request from the computer to the storage apparatus and controlling to store journal data in the storage apparatus; wherein the storage apparatus includes a first storage area for storing data to be used by the computer and a second storage area for storing journal data including write data and first update log information corresponding to the write data when there is a write request from the computer for writing data in the first storage area; wherein when the switch detects an event of status change related to the network system, the switch marks a first point of time corresponding to the event as a recovery request point, and creates second update log information corresponding to the recovery request point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.