Patent ID: 7685384

Claim:
A computer-readable data transmission system for facilitating data replication across a data communication network, said data transmission comprising: a file open status indicator; a header portion having information useful for determining if a meta-file was properly closed; a block temporal signature portion having a data block signature generated using a hash function and a transaction member; a status portion having information about said data signature; wherein: said transaction number is generated using a remote server; said header portion, said block temporal portion, and said status portion are compressed and encrypted prior to being transmitted across said data communication network; said data block signature is computed across changed data bytes within said data block, wherein a changed data byte occurs when a data byte within said data block does not substantially match a corresponding stored data byte within a corresponding stored data block associated with a source computer; and said status portion includes a dirty bit if said data communications network is not available for conveying said data transmission from a source computer to a remote computer.