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:
Jan. 30, 2007
Filed:
Nov. 20, 2003
Juan A. Coronado, Tucson, AZ (US);
Matthew J. Kalos, Tucson, AZ (US);
Donald M. Nordahl, Tucson, AZ (US);
Richard A. Ripberger, Tucson, AZ (US);
Juan A. Coronado, Tucson, AZ (US);
Matthew J. Kalos, Tucson, AZ (US);
Donald M. Nordahl, Tucson, AZ (US);
Richard A. Ripberger, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method to control access to logical volumes disposed in an information storage and retrieval system using parallel access volumes. The method provides an information storage and retrieval system comprising a plurality of logical volumes, and a plurality of host computers, where each host computers is capable of communicating with the information storage and retrieval system. The method creates a parallel access volume having an alias, and persistently associates that parallel access volume with an original base logical volume, where the original base logical volume may be assigned to one of (N) logical volume groups. If the original base logical volume is assigned to the (i)th logical volume group, the method permits each host computers assigned to the (i)th host computer group to access the original base logical volume, or the current base logical volume, associated with the parallel access volume.