Patent ID: 8516207

Claim:
A remote online backup method based on stager fragmented transmission, comprising: defining a journal storage system as a journal relay system, i.e., a Journal Stager; dividing the Journal Stager into a Local Journal Stager and a Remote Journal Stager to optimize backup transmission performance of the whole online backup system; setting between the Local Journal Stager and the Remote Journal Stager a transmitter, by which a journal is transmitted from one stager to another stager; applying the journal to a backup storage device through a Journal Replayer at a backup destination site; the Local Journal Stager comprises a journal receiving and transmitting device belonging to a same local high speed network to a client site needing online backup, and the Remote Journal Stager comprises a journal receiving and transmitting device located in a network environment outside client Local Production sites; wherein the Journal Stager has an identifying function for destination site flags in the journal to determine whether journal data has arrived at destination, or the journal data needs to be further retransmitted, so that the Journal Stager has differences in the Local Journal Stager and the Remote Journal Stager; when data needs to be backup to remote sites with limited network condition, the data is firstly transmitted through the Local Journal Stager.