Raid storage systems having arrays of solid-state drives and methods of operation
US9152498B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2014 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Oct 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
RAID storage systems and methods adapted to enable the use of NAND flash-based solid-state drives. The RAID storage system includes an array of solid-state drives and a controller operating to combine the solid-state drives into a logical unit. The controller utilizes data striping to form data stripe sets comprising data (stripe) blocks that are written to individual drives of the array, utilizes distributed parity to write parity data of the data stripe sets to individual drives of the array, and writes the data blocks and the parity data to different individual drives of the array. The RAID storage system detects the number of data blocks of at least one of the data stripe sets and then, depending on the number of data blocks detected, may invert bit values of the parity data or add a dummy data value of “1” to the parity value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.