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:
Jun. 03, 2003
Filed:
Jan. 10, 2000
Michael D. Haynes, Raleigh, NC (US);
Charles H. Hopkins, Upton, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Default isolation method assists in correction of a fault in a peer-to-peer communication link between two storage processors. Each processor is associated with a fault indicator which is activated according to the method to guide a technician in replacing the storage processors one at a time to determine the fault with the peer-to-peer communication link. Upon detection of a fault, one of the processors is suspended so that a technician may replace it with a new storage processor. The surviving storage processor detects whether a new storage processor has been replaced. If the peer-to-peer communication link still fails, the surviving processor instructs the peer processor to boot up and then suspends itself. Communications outside of the peer-to-peer communication link can take place between the processors by leaving a message in at least one of the disk drives which is periodically checked by the processors.