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Virtual disk drive system and method

  • US 7,962,778 B2
  • Filed: 11/02/2009
  • Issued: 06/14/2011
  • Est. Priority Date: 08/14/2003
  • Status: Active Grant
First Claim
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1. A disk drive system, capable of dynamically allocating data in a pool of storage, comprising:

  • a data storage subsystem;

    a plurality of user volumes comprising storage space from the data storage subsystem; and

    a disk manager having at least one disk storage system controller, wherein the disk manager is configured to;

    maintain a pool of storage comprising a matrix of virtual volumes of the data storage subsystem, each of the virtual volumes being an abstraction of multiple physical storage devices and having a predefined size;

    dynamically allocate free virtual volumes from the matrix of virtual volumes to the plurality of user volumes; and

    write data to the allocated virtual volumes.

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