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:
Oct. 03, 2000
Filed:
Jun. 04, 1998
Michael Allen Griese, Byron, MN (US);
Barrie Neil Harding, San Jose, CA (US);
Dennis Carl Mairet, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides a system for configuration and running a DASD storage subsystem where the small computer system interface (SCSI) Target behavior needs to be different depending on type and characteristics of the attaching SCSI hosts. The configuration process defines the behavior by SCSI bus port through the use of bus behavior tables. Accordingly, several ports are able to operate correctly based on the hosts that attach to separate ports. In a first aspect, a direct access storage device (DASD) storage subsystem is described. The DASD storage subsystem comprises a plurality of ports, each of the plurality of ports including a table. Each of the tables defines the behavior of the particular port as a SCSI target. The DASD storage subsystem includes a mechanism for configuring the plurality of ports utilizing the tables within the ports. In a second aspect, a SCSI system is described. The SCSI system comprises a plurality of SCSI hosts and a DASD storage subsystem. The DASD storage subsystem comprises a plurality of ports. Each of the plurality of ports is coupled to one or more of the plurality of SCSI hosts. Each of the plurality of ports includes a table. Each of the tables defines the behavior of the particular port as a SCSI target. The DASD storage subsystem also includes a mechanism for configuring the plurality of ports utilizing the tables within the ports.