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:
Aug. 08, 2000
Filed:
Apr. 08, 1998
Gary Robert Lyons, Leander, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method is provided for reducing the number of transactions for multi-segmented host system write operations in a RAID 6 device. The method comprises sending a write command for new multiple data segments to a plurality of data drives in the RAID 6 device via a RAID 6 controller. The RAID 6 device has data segments stored in stripes on the data drives and parity drives within the RAID 6 device. Parity is calculated for old data segments, new data segments and old parity on the parity drives to determine a new parity. The new parity is then written to one parity drive of the multiple parity drives within the RAID 6 device, thereby reducing the number of read and write transactions between the controller and the drives within the RAID 6 device.