Methods of sanitizing a flash-based data storage device

Details Methods of sanitizing a flash-based data storage device Methods of sanitizing a flash-based data storage device

2006-02-21

2006-02-21

Peikari, B. James (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C365S185330, C365S238500, C365S218000, C365S230030, C711S209000

Reexamination Certificate

active

07003621

ABSTRACT:
A data storage device includes one or more non-volatile, blockwise erasable data storage media and a mechanism for sanitizing the media in response to a single external stimulus or in response to a predetermined physical or logical condition. Optionally, only part of the media is sanitized, at a granularity finer than the blocks of the medium. Setting a flag in an auxiliary nonvolatile memory enables an interrupted sanitize to be detected and restarted. Optionally, a “death certificate” verifying the sanitizing is issued. Preferably, the media are configured in a manner that allows atomic operations of the sanitizing to be effected in parallel.

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LeaseForum, Inc. “Addressing Data at Asset Retirement: Understanding Data Storage, Data Liability and Current Data Removal Methodologies”. http://www.leaseforum.com/Documents/Data%20Sanitization—2003.pdf; as viewed on Aug. 21, 2005.

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