Monitoring of residual encrypted data to improve erase performance on a magnetic medium

US8995071B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Erika M. Dawson · Tucson, US
• Scott M. Fry · Oro Valley, US
• Paul M. Greco · Coral Springs, US
• Gavin S. Johnson · Aromas, US
• Joel K. Lyman · Tucson, US
• Jon A. Lynds · San Jose, US
• Cory G. Smith · Mesa, US

Key dates

• Filing date: Jul 17, 2012
• Grant date: Mar 31, 2015
• Expiry date: Nov 15, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B2220/90
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

In one embodiment, a system includes a processor, logic in the processor and/or memory configured to determine a physical position on a magnetic medium that corresponds to an end of encrypted data written over residual unencrypted data, and logic configured to store an indicator of the physical position on at least one of the magnetic medium and a memory coupled thereto. In another embodiment, a method includes determining a physical position on a magnetic medium that corresponds to an end of encrypted data written over residual unencrypted data, storing an indicator of the physical position on at least one of the magnetic medium and a memory coupled thereto.