Data storage device using metadata and mapping table to identify valid user data on non-volatile media
US8667248B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Feb 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7207
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed including a non-volatile media having a first and a second plurality of physical locations, the first plurality of physical locations storing user data and the non-volatile media storing first metadata associating each of the first plurality of physical locations with a logical block address (LBA), and a mapping table including a mapping of each LBA to a current physical location. The data storage device further includes control circuitry that reads the first metadata to obtain a first plurality of LBAs, reads the mapping table to determine a current physical location for the first plurality of LBAs, and compares the current physical location of each of the first plurality of LBAs to a corresponding one of the first plurality of physical locations to identify valid user data in the first plurality of physical locations for migration into the second plurality of physical locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.