Hybrid drive copying disk cache to non-volatile semiconductor memory
US8782334B1 · kind B1 · utility
116Cited by
73References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2011 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Nov 23, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D10/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hybrid drive is disclosed comprising a head actuated over a disk comprising a plurality of data sectors. The hybrid drive further comprises a non-volatile semiconductor memory (NVSM) comprising a plurality of memory segments. A disk cache is defined comprising a first plurality of the data sectors, and a non-cache area of the disk is defined comprising a second plurality of the data sectors. When a write command is received from a host, data is written to the disk cache, and under certain conditions, the data is copied from the disk cache to the NVSM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.