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:
Sep. 02, 2003
Filed:
Dec. 29, 1999
Christopher J. Mulvey, Shrewsbury, MA (US);
William R. Tuccio, Sutton, MA (US);
Thomas Linnell, Northborough, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A data storage system wherein a host computer is coupled to a bank of disk drives through a system interface. The interface includes a plurality of directors and a memory interconnected by a plurality of busses for controlling data transfer between the host computer and the bank of disk drives as such data passes through the memory. A front-end portion of the directors is coupled to the host computer through front-end input/output adapters. Each one of the front-end directors includes a fiber channel hub. The hub is configured to provide a selected one of a plurality of fiber channel loops between one of the front-end directors and a selected one, or more, of a plurality of host computer sections. The fiber channel hub includes a plurality of transceivers each one being adapted to communicate with a corresponding one of the plurality of host computer sections. A plurality of multiplexer sections is coupled to a said one of the directors through a configurable fiber channel loop. Each one of such multiplexer sections is coupled to a corresponding one of the plurality of host computer sections through a corresponding one of the transceivers. Each one of the multiplexer sections is responsive to control signal for coupling, or decoupling, the one of the host computer sections coupled thereto to, or from, the loop selectively in accordance with the control signal.