Secure data disposal for disk drive

When a disk sector is written to, a bit for the sector is set indicating that the sector will require secure data disposal (SDD) to be run on it. To save time during end of life disposal, SDD is executed only on sectors whose bits indicate that they have been written to. SDD can be executed on each...

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Bibliographic Details
Main Authors CROMER DARYL CARVIS, LOCKER HOWARD JEFFREY, SPRINGFIELD RANDALL SCOTT
Format Patent
LanguageEnglish
Published 22.02.2011
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:When a disk sector is written to, a bit for the sector is set indicating that the sector will require secure data disposal (SDD) to be run on it. To save time during end of life disposal, SDD is executed only on sectors whose bits indicate that they have been written to. SDD can be executed on each dirty sector in one operation at end of life or incrementally during use as disk activity permits.
Bibliography:Application Number: US20080028114