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. 29, 2001
Filed:
Oct. 07, 1998
Brent Cameron Beardsley, Tucson, AZ (US);
Joseph Charles Elliott, Hopewell Junction, NY (US);
James Lincoln Iskiyan, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Disclosed is a system for handling an input/output (I/O) operation. A controller, such as a storage controller, receives an I/O operation against an address for an I/O device, such as a volume in a storage system. The controller determines whether there is at least one active I/O operation executing against the I/O device. After determining that there is at least one active I/O operation, the controller determines whether the received I/O operation conflicts with active I/O operations executing against the I/O device. The controller then executes the received I/O operation against the I/O device concurrently with the active I/O operations after determining that the received I/O operation does not conflict with active I/O operations.