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Virtual file system

DC
  • US 7,644,136 B2
  • Filed: 11/30/2004
  • Issued: 01/05/2010
  • Est. Priority Date: 11/28/2001
  • Status: Active Grant
First Claim
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1. A virtual file system, comprising:

  • a plurality of storage processor nodes, each comprising a processor and a plurality of disk drives coupled to said processor;

    a backbone switch, coupled to said plurality of storage processor nodes, that enables communication between each of said plurality of storage processor nodes;

    wherein each processor of each of said plurality of storage processor nodes is coupled between said backbone switch and said plurality of disk drives;

    wherein said plurality of disk drives of each of said plurality of storage processor nodes collectively comprise a disk drive array which stores a plurality of titles, each title divided into a plurality of subchunks which are distributed across said disk drive array in which each subchunk is stored on a disk drive of said disk drive array; and

    at least one management node coupled to said backbone switch, said at least one management node executing a virtual file manager which manages storage and access of each subchunk of said plurality of titles, and which maintains a plurality of directory entries including a directory entry for each title, each said directory entry comprising a list of subchunk location entries in which each subchunk location entry comprises a storage processor node identifier and a disk drive identifier.

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