1. A method of copying application data indicative of a known recoverable state of an operating software application, the method comprising: identifying a set of data indicative of the known recoverable state of the software application from a group of software application data generated, at least in part, by the operating software application; generating an indicator and storing the indicator in a data structure associated with the set of data indicative of the known recoverable state; and copying the set of data indicative of the known recoverable state designated by the indicator such that the copied set of data may be used to restore the operating software application to a known stable state.