The time varies from several minutes to hours. It depends on the six reasons mention above. But you can assume you are cloning a drive with a 2TB single file on it, and it's a 7200 RPM Drive that can write at approx. 100Mbps, then it would take 4–5 Hrs approx.
But you can assume you are cloning a drive with a 2TB single file on it, and it's a 7200 RPM Drive that can write at approx. 100Mbps, then it would take 4–5 Hrs approx.