Virtual file system
DCFirst Claim
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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Abstract
A virtual file system including multiple storage processor nodes including a management node, a backbone switch, a disk drive array, and a virtual file manager executing on the management node. The backbone switch enables communication between the storage processor nodes. The disk drive array is coupled to and distributed across the storage processor nodes and stores multiple titles. Each title is divided into data subchunks which are distributed across the disk drive array in which each subchunk is stored on a disk drive of the disk drive array. The virtual file manager manages storage and access of each subchunk, and manages multiple directory entries including a directory entry for each title. Each directory entry is a list of subchunk location entries in which each subchunk location entry includes a storage processor node identifier, a disk drive identifier, and a logical address for locating and accessing each subchunk of each title.
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Citations
25 Claims
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1. A virtual file system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification