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:
Apr. 07, 2009
Filed:
Oct. 23, 2003
Douglas E. Lecrone, Hopkinton, MA (US);
Daniel A. Murphy, Hopkinton, MA (US);
Denis Hall, Chelmsford, MA (US);
Douglas E. LeCrone, Hopkinton, MA (US);
Daniel A. Murphy, Hopkinton, MA (US);
Denis Hall, Chelmsford, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A method and apparatus for monitoring update activity, particularly in the form of write requests, to a data storage facility, over at least one cycle to identify any write operation or update that occurs to that data storage facility on a track-by-track basis. At the end of each cycle a list of changed tracks is stored in a data set. After information has been accumulated by a collector application, a reporter application manipulates the data to obtain information concerning the track changes and to estimate communication path requirements.