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:
Feb. 27, 2007
Filed:
Nov. 14, 2003
David Alan Burton, Vail, AZ (US);
Joseph Paul Hughes, Boulder, CO (US);
Noel Simen Otterness, Lafayette, CO (US);
Bruce A. Woller, Boulder, CO (US);
David Alan Burton, Vail, AZ (US);
Joseph Paul Hughes, Boulder, CO (US);
Noel Simen Otterness, Lafayette, CO (US);
Bruce A. Woller, Boulder, CO (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus, system, and process are disclosed for maintaining data in an electronic storage array during multiple, concurrent drive failures. A first drive failure is recognized and the storage system controller subsequently enters a first operating mode. The storage system controller then recognizes a second drive failure and enters a second operating mode, which is different from the first operating mode, in response to the second drive failure. The second operating mode allows the storage system controller and a recovery module to access the data of the second failed drive in a controlled manner in order to attempt to recover the data on the first failed drive. Also, a pinned data module may allow write data to be written to a pinned data drive, instead of a failed drive, while the storage system controller is operating in the second operating mode.