Flushing cached data upon power interruption
US7870338B2 · kind B2 · utility
11Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2008 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Apr 18, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An I/O processor determines whether or not the amount of dirty data on a cache memory exceeds a threshold value and, if the determination is that this threshold value has been exceeded, writes a portion of the dirty data of the cache memory to a storage device. If a power source monitoring and control unit detects a voltage abnormality of the supplied power, the power monitoring and control unit maintains supply of power using power from a battery, so that a processor receives supply of power from the battery and saves the dirty data stored on the cache memory to a non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.