Implementing enhanced IO data conversion with protection information model including parity format of data integrity fields
US8495469B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 2011 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Jan 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and controller for implementing enhanced input/output (IO) data conversion with an enhanced protection information model including an enhanced parity format of the data integrity fields (DIF), and a design structure on which the subject controller circuit resides are provided. The controller implements a protection information model including a unique parity data integrity fields (DIF) format. The unique parity DIF format enables corruption detection for RAID parity blocks. The unique parity DIF format includes a predefined size for a protection information model logical block guard cyclic redundancy check (CRC) field and a logical block Reference Tag (RT) field. A plurality of storage devices in a RAID configuration are coupled to the controller, and configured to store data and RAID parity redundancy data, and wherein a strength of RAID parity redundancy data is not reduced when a loss of a single storage device in the plurality of storage devices occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.