MIH can collect data for many hours. Data is not written to a file, but is held in memory until the user stops data collection and choses to save. If a trace graph is open, then it is also saving full trace data for each data point, and this can get very large after a few hours.

There is no set time limit that the data is saved, but there is a certain point count. When more than 5,000 data points are collected and the trace window is open, then the data will automatically be saved as a log file and the last 600 points will remain in the current data list. The rest is removed to make room in memory for continued data acquisition.

Auto archive is a feature that cannot be turned off.