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. 22, 2010
Filed:
Mar. 28, 2008
John C. Elliott, Tucson, AZ (US);
Shah Mohammad Rezaul Islam, Tucson, AZ (US);
Robert A. Kubo, Tucson, AZ (US);
Gregg S. Lucas, Tucson, AZ (US);
John C. Elliott, Tucson, AZ (US);
Shah Mohammad Rezaul Islam, Tucson, AZ (US);
Robert A. Kubo, Tucson, AZ (US);
Gregg S. Lucas, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method to assign addresses to a plurality of data storage devices, by providing a switch and (N) data storage devices, where each of those (N) data storage devices is interconnected with said switch. The method further establishes (M) arbitrated loop physical addresses ('AL_PAs'), where (M) is less than (N), and assigns a different one of each of the (M) AL_PAs to a different one of the (N) data storage devices, such that the (N) data storage devices comprise (M) AL_PA-assigned data storage devices and (P) non-address-assigned data storage devices. The method then detects a failure of an (i)th AL_PA-assigned data storage device, and transfers the (i)th AL_PA from the failed address-assigned data storage device to a (j)th data storage device, where that (j)th data storage device comprises one of the (P) previously non-addressed data storage devices.
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