Invention Grant
- Patent Title: Drive replacement techniques for RAID systems
- Patent Title (中): 驱动RAID系统的替代技术
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Application No.: US13454831Application Date: 2012-04-24
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Publication No.: US08386889B1Publication Date: 2013-02-26
- Inventor: Heng Tang , Zining Wu , Gregory Burd , Pantas Sutardja
- Applicant: Heng Tang , Zining Wu , Gregory Burd , Pantas Sutardja
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: G11C29/00
- IPC: G11C29/00

Abstract:
A control module includes an encoder module, which generates a first code word for multiple drives. A detector module, in response to detecting an error in a first drive subsequent to generation of the first code word, initiates replacement of the first drive with a second drive. The encoder module generates a second code word for the second drive. A mapping module maps physical locations of data in the drives to logical locations of the first code word, assigns a predetermined value to one of the logical locations corresponding to the first drive to identify an unused logical location, and assigns the unused logical location to the second drive based on the predetermined value. A difference module generates a third code word based on the first and second code words. The encoder module generates an updated code word for the multiple drives based on the first and third code words.
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