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Recovery Algorithms on Disk Drives for Certain Errors on Write Operations

IP.com Disclosure Number: IPCOM000019223D
Original Publication Date: 2003-Sep-05
Included in the Prior Art Database: 2003-Sep-05

Publishing Venue

IBM

Abstract

Disclosed is the use of write verify algorithms to recover from errors written on a disk drive that resulted from either loss of signal or erasure . Those hard errors can subsequently be rewritten reliably at the same location of the original hard error via the proposed algorithm. A certain class of problems and customer applications make this a very cost effective solution -- eliminating the need to replace the drive in question with the subsequent cost and productivity impacts.