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:
Oct. 12, 2004
Filed:
Jun. 19, 2001
Stephen S. Selkirk, Broomfield, CO (US);
Charles A. Milligan, Golden, CO (US);
Storage Technology Corporation, Louisville, CO (US);
Abstract
A method, apparatus and computer program product for performing an instant copy of data are provided to support dynamically changeable virtual mapping schemes in a data processing system. The present invention separates processing of data unit requirements from the selection of which storage subsystems to use for storage by using a storage methodologies inventory. Various instant copy mechanisms are provided for copying data upon receiving a write operation to either original or copy data. The instant copy mechanisms may be selected based on the type of mapping originally used to store the data that is to be copied. Determining the mapping of the data may include parsing extents of the data into sets based on types of mapping used to map extents. The mapping of the data may be one of load point and offset, and a full pointer mapping.