| 摘要 |
Exemplary embodiments provide in effect data de-duplication in storage servers without the need to compare every byte of stored data. In one embodiment, a method for providing contents from a content device to a storage device comprises receiving by a storage device a ticket including trade information of a trade by a user for content from a content device; receiving by the storage device from the content device attribute information of the content identified in the ticket; determining whether the storage device has the content identified in the ticket based on the attribute information; if the storage device does not have the content identified in the ticket, receiving the content identified in the ticket from the content device and storing the content in the storage device; and if the storage device has the content identified in the ticket, not receiving the content identified in the ticket from the content device.
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