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Host-initiated data reconstruction for improved RAID read operations

  • US 7,302,603 B2
  • Filed: 11/20/2003
  • Issued: 11/27/2007
  • Est. Priority Date: 11/20/2003
  • Status: Active Grant
First Claim
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1. A method for controlling a RAID subsystem, comprising:

  • transmitting a first command to a RAID controller to read a block of data from an array of storage drives;

    receiving the block of data from the RAID controller;

    detecting errors in the block of data received from the RAID controller;

    if an error is detected, transmitting a second command to the controller to perform a first reconstruct read of the block of data; and

    receiving the reconstructed block of data.

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