Disk controller methods and apparatus with improved...

Details Disk controller methods and apparatus with improved... Disk controller methods and apparatus with improved...

2009-12-29

2011-12-06

Baderman, Scott (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

08074149

ABSTRACT:
A RAID disk drive controller (FIG.33) implements disk storage operations, including striping and redundancy operations with multiple disk drives connected via respective SATA ports (520). Configurable data path switch logic (460) provides dynamic configuration of two or more attached drives into one or more arrays. Data transfers are synchronized locally by leveraging the SATA port transport layer FIFO (530). Synchronous transfers allow on-the-fly redundancy (XOR) operations (FIG.36) for improved performance and reduced hardware complexity. XOR accumulator hardware (FIG.42-FIG.43) reduces buffer requirements for multiple DMA channels otherwise required for synchronization, and various narrow and wide striping modes are supported.

REFERENCES:
patent: 6018778 (2000-01-01), Stolowitz
patent: 6098128 (2000-08-01), Velez-McCaskey et al.
patent: 6237052 (2001-05-01), Stolowitz
patent: 7743275 (2010-06-01), Tormasov et al.
patent: 2003/0066010 (2003-04-01), Acton
Notice of Allowance from U.S. Appl. No. 12/649,228 dated Jul. 22, 2011.

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