Dynamically upgradeable disk array chassis and method for dynamically upgrading a data storage system utilizing a selectively switchable shunt
US5890214A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Nov 14, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/409
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A dynamically upgradeable disk array chassis, and a method for dynamically upgrading a data storage system. The dynamically upgradeable disk array chassis includes a serial bus having a first bus for passing data in one direction and a second bus for passing data in the opposite direction. A shunt connects the first and second buses in a normal state. The shunt has a switched state in which each of the first and second buses is coupled to a separate output from the chassis. The chassis includes an environmental monitor connected to a communication path. Upon connecting a new disk array chassis to an active disk array chassis, the environmental monitor communicates through the communication path before switching the shunt to connect the serial bus with the serial bus of the new disk array chassis. The disk array chassis may include a diplexer for connecting the communication path to the separate outputs of the shunt and for combining the communication path signals with the serial path signals in one direction and for separating these signals in the other direction. The environmental monitor path communications and the serial bus communications can take place over a single twinax cab…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.