A method and technique for data lifecycle management includes identifying a fault from a monitored system. A time period window associated with the fault is defined based on when the fault occurred. One or more metrics that are related to the fault and that fall within the time period window are identified and stored in a memory. A lifespan condition associated with the fault is identified, and varying levels of lifespans are assigned to the one or more metrics based on a level of relationship between the respective one or more metrics. The one or more metrics are removed from the memory if their associated lifespans are over.