Patent ID: 8898508
Filing Date: 2014-11-25
Classification: G06F

Abstract:
1. A method for transmitting an updated state of a primary computer system to a backup computer system through an intermediary computer system, the method comprising: receiving, by the intermediary computer system, checkpoint information packets from the primary computer system through a first connection, each of the received checkpoint information packets comprising updated data corresponding to memory pages of the primary computer system that have been modified by the primary computer system; identifying, by the intermediary computer system, at least one of the memory pages of the primary computer system stored by the intermediary computer system that has been less frequently updated by the primary computer system and has not been transmitted to the backup computer system; and transmitting, by the intermediary computer system, the updated data corresponding to the memory pages of the primary computer system to the backup computer system through a second connection by preferentially transmitting the updated data corresponding to the identified at least one of the memory pages, the second connection having lower bandwidth than the first connection.