Fault tolerant computer with archival rollback capabilities
US5325519A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1991 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Oct 18, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0676
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system comprises a storage device comprising a plurality of locations for storing data and having a defined audit partition region comprising one or more of said locations and processing circuitry for detecting access requests to alter data on respective sets of one or more of locations of the storage device. Responsive to each access request, the processing circuitry stores data from said respective set of locations in the audit partition region prior to performing the access request, such that a sequence of data transfers from the storage device is stored in the audit partition region in a known order. Responsive to a user request, data is restored from the sequence of data transfers in the audit partition region to the respective set of locations on the storage device to return the storage device to a previous state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.