The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 24, 2001

Filed:

Sep. 01, 1998
Applicant:
Inventor:

Steven R. McDowell, Lexington, SC (US);

Assignee:

NCR Corporation, Dayton, OH (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/05 ; H03K 1/9003 ;
U.S. Cl.
CPC ...
H02H 3/05 ; H03K 1/9003 ;
Abstract

A computing apparatus that is capable of taking over processing from a primary computer. The computing apparatus includes a confirmation-based file system cache flush mechanism that prevents loss of uncommitted data during a primary computer failure and a filter driver that is capable of functioning as a network file system driver in a first mode of operation and as an invisible pass through to the underlying local file system driver in a second mode of operation. A computer system that includes a primary and a secondary computer that have these features is also disclosed.


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