Hard disk drive data scrub methodology
US7653838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2008 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method, system and computer program product for reporting and recovering from uncorrectable data errors in a data processing system using the Advanced Technology Attachment (ATA) or the Serial ATA (SATA) protocol. The invention utilizes the data scrubbing functionality of SCSI hard drives to provide a higher level of data integrity in an operating system implemented RAID environment. If an uncorrectable data error is found on a hard drive during a background data scrubbing operation, information concerning the data error is logged in a S.M.A.R.T. (Self Monitoring Analysis and Reporting Technology) error data structure. When the host operating system identifies the uncorrectable data error during normal operation, a Host Array Manager issues a Write Command to write the data from a redundant drive after the defective Logical Block Address (LBA) has been reassigned.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.