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. 03, 2005
Filed:
Jun. 18, 2002
Paul C. Wilson, Mendon, MA (US);
Scott Romano, Newton, MA (US);
Oren Mano, Framingham, MA (US);
Robert Decrescenzo, Franklin, MA (US);
Steven Kosto, Marlboro, MA (US);
Waiyaki O. Buliro, Randolph, MA (US);
Matthew Britt Sullivan, Holden, MA (US);
Paul C. Wilson, Mendon, MA (US);
Scott Romano, Newton, MA (US);
Oren Mano, Framingham, MA (US);
Robert DeCrescenzo, Franklin, MA (US);
Steven Kosto, Marlboro, MA (US);
Waiyaki O. Buliro, Randolph, MA (US);
Matthew Britt Sullivan, Holden, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
A data storage system for transferring data between a host computer/server and a bank of disk drives through a system interface. The interface includes: a global memory; a plurality of front-end directors coupled between the global memory and the host computer/server; and, a plurality of back-end directors coupled between the global memory and the bank of disk drives. Each one of the first directors and each one of the second directors has a data pipe. Each one of such front-end directors passes front-end data between the global memory and the host computer through the data pipe therein and each one of the second directors passing back-end data between the global memory and the bank of disk drives through the data pipe therein. Each one of the first and second directors includes a data pipe controller, responsive to data fed to the data pipe, for performing a selected one of a plurality of functions on the data passing through the data pipe to obtain data from the global memory or to read such data into the global memory. The function is determined by descriptors associated with the data fed to the data pipe therein. A plurality of different, independently operable state machines is provided. Each one of the state machines is adapted to produce control signals for a corresponding one to the functions. A switching section is coupled to the global memory for passing data therethrough between the global memory and the data pipe in accordance with the control signals produced by the state machines.