Questions about tempdb version store

We ran across an error today: > Error: 3967, Severity: 17 and from what I can tell it's basically 'full version store'. This has raised some questions that I've had trouble answering, as at my shop we've never had this error before: * If there is a preset max size (based on total *tempdb* size or otherwise), is it dynamic? * Is there a setting that would make it dynamic if it isn't? * Can we set up alerts based on this? (i.e. DMVs to use to track size etc.)