Hello,
for the case there should be a power outage, will the entire blockchain be downloaded again or only the changes (since the outage)?
Thank you!
Loaded question. IF there was no corruption it *should* pick up where it left off more or less.
BUT, if things were being written to the drive and corruption happened then you may need to start again.
Sadly, the best answer is 'it depends' you can search the forum and see a lot of people who have had problems due to power blips.
BUT, what you don't see are the countless people who had power issues and just kept on going with no problems when the power came back.
We only see the problems.
-Dave