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. 14, 2003
Filed:
Dec. 06, 2000
Operating system for generating overlapped input-output requests to a device in a disk array storage
Applicant:
Inventors:
William R. Fairchild, Douglas, MA (US);
Douglas E. LeCrone, Hopkinton, MA (US);
Daniel A. Murphy, Hopkinton, MA (US);
Assignee:
EMC Corporation, Hopkinton, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/314 ;
U.S. Cl.
CPC ...
G06F 1/314 ;
Abstract
A method for enabling a data processing system with a host running under an operating system and with a disk array storage device organized by logical devices to process panel I/O requests to a logical device from one or more host processors concurrently. The system includes a parallel access control block that identifies unit control blocks assigned to the same logical device. If an I/O request is received while a main UCB unit is busy, the main control block identifies another unit control block to enable an overlapped access to the logical device.