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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.:

US 6625750 B1

PDFFull Text
Date of Patent:
Sep. 23, 2003

Filed:

Nov. 16, 1999

Hardware and software failover services for a file server

Applicant:
Inventors:

Wayne W. Duso, Shrewsbury, MA (US);

Leslie E. Kuczynski, Belmont, MA (US);

John Forecast, Newton, MA (US);

Uday Gupta, Westford, MA (US);

Uresh K Vahalia, Newton, MA (US);

Dennis P. J. Ting, Groton, MA (US);

Assignee:

EMC Corporation, Hopkinton, MA (US);

Attorney:

Howry Simon Arnold & White LLP

Primary Examiner:

Scott Baderman

Assistant Examiner:

Joshua Lohn

Int. Cl.
CPC ...
H02H 3/05 ;
U.S. Cl.
CPC ...
H02H 3/05 ;
Abstract

A file server includes a plurality of stream server computers linking data storage to a data network, and at least two controller servers for controlling the stream server computers. The controller servers are programmed so that at a given time one of the controller servers is active in controlling the stream server computers, and another of the controller servers is inactive. The inactive controller server is programmed to respond automatically to a failure of the active controller server by becoming active. For example, each of the controller servers has a respective flag for indicating whether or not the controller server is active. Each controller server is programmed so that, upon booting, it will read the flag of the other stream server, and if the flag of the other controller server indicates that the other controller server is active, then the controller server becomes inactive. Otherwise, the stream server assumes an active or inactive state based on a predetermined arbitration method. The active controller server also reports failure conditions to a customer service center, monitors the inactive controller server to ensure that the inactive controller server is in a state of readiness, and monitors itself to determine whether it should become inactive.

Find Patent Forward Citations

Duso, Wayne. (2003). Hardware and software failover services for a file server (U.S. Patent No. 6625750). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6625750

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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