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Virtual disk drive system and method

  • US 7,574,622 B2
  • Filed: 03/22/2007
  • Issued: 08/11/2009
  • Est. Priority Date: 08/14/2003
  • Status: Expired due to Term
First Claim
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1. A method of dynamically allocating data of a RAID storage system, comprising the steps of:

  • generating at least one virtual volume of disk space blocks from a plurality of RAID devices;

    managing a page pool of storage that maintains a list of free disk space blocks of the at least one virtual volume;

    allocating the disk space blocks of the at least one virtual volume;

    writing data to the allocated disk space blocks; and

    determining occupancy rate of the disk space of the RAID subsystem based on historical occupancy rate of the disk space blocks of the RAID subsystem.

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