System and method for perennial distributed back up
First Claim
1. A method for the distributed backup of a block B of digital data in a computer network including a distributed hash table DHT and at least three nodes NO, the nodes NO being connected to said network, said method comprising a subdivision step for subdividing said block B into r fragments F of digital data, said method further comprising:
- a storage step storing a fragment F in the storage resources of a node NOF; and
a recording step recording the pairs (block B, node NOF) and (node NOF, fragment F) in the portions of the DHT that are contained in at least two nodes;
wherein no operation on the DHT or any storage operation is implemented on a centralized server.
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Abstract
The invention relates to computer networks and to a digital data protection thereon, in particular to a method for the distributed backup of a digital data block (B) in an computer network comprising a DHT distributed hash table and at least one node NO, wherein said NO nodes are connected to said network. The inventive method consists in dividing said block B into digital data r fragments F, in storing the fragment F in the NOF resource memories, in recording couples (block B, node NOF) and (node NOF, fragment F) in the DHT parts contained in at least two nodes and in a centralised server when no operation on the DHT or storage operation is carried out during said process.
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Citations
15 Claims
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1. A method for the distributed backup of a block B of digital data in a computer network including a distributed hash table DHT and at least three nodes NO, the nodes NO being connected to said network, said method comprising a subdivision step for subdividing said block B into r fragments F of digital data, said method further comprising:
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a storage step storing a fragment F in the storage resources of a node NOF; and
a recording step recording the pairs (block B, node NOF) and (node NOF, fragment F) in the portions of the DHT that are contained in at least two nodes;
wherein no operation on the DHT or any storage operation is implemented on a centralized server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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- 12. A distributed data backup device comprising a processor, a storage memory, connection means for connecting to the network, and means for controlling the distributed data, of a distributed hash table DHT type.
Specification