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.
Patent No.:
Date of Patent:
May. 14, 2002
Filed:
Dec. 09, 1998
Steven R. McDowell, Lexington, SC (US);
NCR Corporation, Dayton, OH (US);
Abstract
A system for mirroring data and disk drive device state over a network between a source computer including a first non-shared disk drive storage device and a target computer including a second non-shared disk drive storage device. The system includes layered software drivers installed within the source computer above the device driver for the first disk drive storage device for capturing and examining write requests directed to the first disk drive storage device, and transmitting the write request and extracted device state information to the target computer. Software drivers installed within the target computer above the device driver for the second disk drive storage device direct the received write requests to the second disk drive storage device, and the received device state information to volatile storage within the target computer.