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:
Aug. 20, 1996
Filed:
Oct. 27, 1994
Applicant:
Inventors:
James M McGillis, Franklin, MA (US);
Jeffrey M Lasker, Marlboro, MA (US);
Assignee:
EMC Corporation, Hopkinton, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395851 ; 395840 ; 395842 ; 3642383 ; 3642386 ; 3642396 ; 3642481 ; 3642601 ; 364261 ; 3642612 ; 364D / ;
Abstract
A disk controller and method for transferring data from a host computer to a cache memory of the disk controller and transferring data from the cache memory to disk drives coupled to the disk controller. Received data to be written to disk by the disk controller is stored in a memory within the disk controller. A host I/O processor modifies certain locations within the memory to indicate to a disk I/O processor that the data is in memory and can be written to disk by the disk I/O processor. In this manner intervention of a controller microprocessor is minimized and disk controller performance is improved.