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Illegal Access History in Hard Disk Drive

IP.com Disclosure Number: IPCOM000114183D
Original Publication Date: 1994-Nov-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Sugi, H: AUTHOR

Abstract

This article describes a hard disk drive unit that records and reports to the host computer, unauthorized access attempt.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 69% of the total text.

Illegal Access History in Hard Disk Drive

      This article describes a hard disk drive unit that records and
reports to the host computer, unauthorized access attempt.

      The drive unit requires a valid access password at every
Power-On Reset (POR) before it starts normal operations.  This
prevents the drive unit from unauthorized access effectively.  When a
password is entered, the drive unit accepts such additional
information as date, time, host computer type, and host computer
serial number.  Unless and until a valid password is entered
successfully, the drive unit does not start normal operation.

The drive unit has an internal counter and maintains a history table.

      The internal counter increments by one at every invalid
password entered, and is reset to zero at any valid password entered.
The number of the counter indicates how many invalid access were
attempted in a row.

      The history table is made of a number of table entries.  A
table entry is created at every invalid password entered, and is
added at the bottom of the table until the number of entries reaches
the maximum limit.  Thereafter, the new entry overrides the last
entry.  Each entry in the table contains such information as date,
time,
host computer type, host computer serial number, and counter value.

      The drive unit, through the host computer interface such as
SCSI, reports its capability, the history of invalid access attempts,
and erases the contents of...