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:
Apr. 21, 2020
Filed:
Apr. 15, 2015
International Business Machines Corporation, Armonk, NY (US);
Robert Galbraith, Rochester, NY (US);
Andrew D. Walls, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus may include a redundant array of independent disks (RAID) array including a plurality of solid state drives (SSDs). The apparatus may further include a RAID array controller coupled to the plurality of SSDs. The RAID array controller may be configured to determine whether one or more logical block addresses (LBAs) of a stripe of the RAID array are unmapped. The one or more LBAs may be associated with one or more SSDs of the plurality of SSDs. The RAID array controller may be configured to determine data corresponding to the stripe based on the determination of whether the one or more LBAs are unmapped. RAID operations (such has Rebuild, Exposed Mode Read, and/or Parity Resync operations) may be optimized based on the knowledge of which LBAs are mapped and unmapped.