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. 09, 2000
Filed:
Jan. 04, 1999
Robert A Thibault, Raynham, MA (US);
Michael Shulman, Groton, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A computer storage system includes an array of storage devices, a system cache memory, one or more back end directors for controlling data transfer between the storage devices and the system cache memory, and one or more front end directors for controlling data transfer between the system cache memory and a host computer. Each director includes a processor and a message interface for controlling high speed message transfer between the processors in the directors. The message interfaces in the directors may be interconnected in a closed-loop configuration. Each message interface may include a transmit/receive circuit for transferring messages to and from other directors, a message memory for storing outgoing messages and incoming messages, and a message controller for controlling transfer of messages between the processor and the message memory and between the message memory and the transmit/receive circuit.