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Finite state machine with a single process context for a RAID system

  • US 7,219,353 B2
  • Filed: 02/27/2001
  • Issued: 05/15/2007
  • Est. Priority Date: 02/27/2001
  • Status: Active Grant
First Claim
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1. A finite state machine stored on a computer-readable medium for a redundant array of independent disks, the finite state machine comprising:

  • a single process context configured to maintain a plurality of entire finite states required for an input/output operation performed in the redundant array of independent disks;

    means for initializing the finite states only in response to a call; and

    means for updating the finite states only in response to call-backs;

    wherein there is one entire finite state for each one of a plurality of concurrent I/O operations performed in the redundant array of independent disks.

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