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Online restriping technique for distributed network based virtualization

  • US 7,437,507 B2
  • Filed: 06/06/2005
  • Issued: 10/14/2008
  • Est. Priority Date: 06/06/2005
  • Status: Active Grant
First Claim
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1. A method of implementing online restriping of a volume in a storage area network, the storage area network including a fibre channel fabric, the fibre channel fabric including a plurality of ports, the method comprising:

  • instantiating, at a first port of the fibre channel fabric, a first instance of the volume for enabling I/O operations to be performed at the volume;

    performing restriping operations at the volume;

    enabling the first port to perform I/O operations at the volume concurrently while at least a portion of the restriping operations are being performed at the volume, wherein the restriping operations include decreasing a number of columns of the volume; and

    performing a restriping operations at the volume starting with a first active region located at an end portion of the volume.

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