Method and system for preserving data resident in volatile cache memory in the event of a power loss
US6725397B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Mar 28, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for preserving data resident in a volatile memory of a data storage unit having at least one rotatable disk platter in the event of an interruption of a primary supply power. The method includes monitoring the status of the primary supply power to the data storage unit. Following the detection of a loss of the primary supply power, kinetic energy inherent in the spinning disk platter is converted into electrical energy. Electrical energy derived from the kinetic energy of the disk platter is then utilized to power the data storage unit to write the data in the volatile memory to an outer-most track of the rotatable disk platter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.