Unified data sets distributed over multiple I/O-device arrays
US6662282B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Oct 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2071
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hardware configuration and methodology for serializing or partially serializing WRITE requests directed to a unified data set are subsequently distributed to one or more remote arrays containing a corresponding mirror unified data set. For each unified data set, one of the local disk arrays over which the unified data set is distributed is selected as a supervisor disk array, and a unified sequence number component is included within that supervisor disk array. WRITE requests generated by a local array to mirror unified data set data to a mirror unified data set must be associated with a unified sequence number, and the WRITE requests are therefore serialized or partially serialized by the unified sequence number component. Additional direct communications links are provided between the local arrays over which a unified data set is distributed both to facilitate WRITE-request serialization and to provide a redundant communications paths for added reliability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.