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, 2008
Filed:
Feb. 03, 2005
Jeffery M. Barnes, Tucson, AZ (US);
Susan K. Candelaria, Tucson, AZ (US);
Nicholas D. Fifer, Tucson, AZ (US);
Matthew J. Kalos, Tucson, AZ (US);
Edwin K. Scott, Tucson, AZ (US);
Jeffery M. Barnes, Tucson, AZ (US);
Susan K. Candelaria, Tucson, AZ (US);
Nicholas D. Fifer, Tucson, AZ (US);
Matthew J. Kalos, Tucson, AZ (US);
Edwin K. Scott, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer storage system includes a supervisor algorithm to detect a host computer's initiator logging in. The supervisor algorithm identifies data storage devices associated with the newly logged-on initiator and tags logical unit number control blocks ('LUNCBs') as having priority in an initiation process. The supervisor algorithm assigns a task control block to each of the identified data storage devices and invokes a logical unit number ('LUN') initialization algorithm. If the supervisor algorithm was invoked during an initial microcode load (“IML”) event, the LUN initialization algorithm initializes each of the identified data storage devices. However, if the supervisor algorithm was invoked during a warmstart procedure, the LUN initialization algorithm first checks to make sure the LUNCB was not mistakenly written too. If not, the LUN initialization algorithm terminates without initializing the associated data storage device. Otherwise, the associated data storage device is initialized and the LUN initialization algorithm terminates.