Method for raid striped I/O request generation using a...

Details Method for raid striped I/O request generation using a... Method for raid striped I/O request generation using a...

2006-12-26

2006-12-26

Tran, Denise (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C710S005000

Reexamination Certificate

active

07155569

ABSTRACT:
A code efficient transfer method in response to a single host I/O request generates a single scatter gather list. The disk array controller transforms the single host I/O request into multiple physical I/O requests. Each of these multiple physical I/O requests uses the single scatter gather list to perform the data transfer operation. Each physical I/O request corresponds to the data transfer of one data stripe. The data stripe is an initial or header stripe of about 0.5K or a stripe of at least 64K.

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“Scatter Gather Lists,” Fusion-MPT Message Passing Interface, Chapter III; Copyright © 2001-2002 by LSI Logic Corporation, pp. 3-1 to 3-8.
“IBM Netfinity RAID Technology,” © International Business Machines Corporation 1999, pp. 1-15.

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