1. A method for monitoring a computer application to perform data replication in a computer network, the method comprising: detecting data operations sent from a computer application to a file system on a source computer, said data operations operative to write data to a first storage device; populating a first log file with data entries indicative of the data operations; detecting a known good state of the computer application; quiescing, at the known good state of the computer application, the sending of the data operations to the file system; and inserting in the first log file a marker including time information identifying a time of the known good state of the computer application.