Background data reconstruction in a storage device array system
US5802264A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1991 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Nov 15, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/88
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a storage device array system and method for operating a storage device array system that provides for data transfers to and/or from a storage device array during the reconstruction of data contained in a failed storage device onto a spare storage device. One embodiment of the invention provides for data transfers during the reconstruction of data on the spare storage device onto a storage device that is replacing the failed storage device. Another embodiment of the invention is directed to the situation in which data contained in a storage device to which data can be written and from which data can be read but these operations are inhibited is being reconstructed on a spare storage device using other of the storage devices in the array. In this situation, write operations to the storage device array are conducted in a manner that provides fault-tolerance, i.e., the ability to continue the reconstruction process, in the event one of the other storage devices being used to reconstruct the data on the spare storage device cannot provide the necessary data for reconstruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.