Large Hard Drive (3T)

Never used program before, some questions:

1) When the program is doing a deep scan, which takes 2+ days, is any file created to show files found in case the process has to be stopped and restarted again? I had a deep scan in process and I think my PC restarted on it's own for some reason as the program was no longer running. I have to start over?

2) After the long scan process (2 days+), how long is the recovery process? If I had 100K image files, is it shorter than the deep scan, longer than the scan, or much longer than the scan?