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Transparent file migration using namespace replication

  • US 7,346,664 B2
  • Filed: 04/23/2004
  • Issued: 03/18/2008
  • Est. Priority Date: 04/24/2003
  • Status: Expired due to Fees
First Claim
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1. A method for accessing an object in a storage network, comprising:

  • receiving a NAS (Network Attached Storage) file handle including a location of the object on a source file server;

    sending as representative of the object, a switch file handle that is independent of the location of the object;

    migrating the object from the location on the source file server to a location on a destination file server by separately replicating a namespace associated with the object and migrating data associated with the object, wherein prior to migrating the object, a stored file handle indicative of the location of the object on the source file server is stored in the location on the destination file server;

    receiving an access request associated with the switch file handle; and

    redirecting the access request to the location on the destination file server.

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