It's better off to backup through backup software. Do you know why using backup software is better? It is because it could verify if there is corrupted files. When it see corrupted files, it could help you to remove it.
Common causes of data corruption and loss include:
- Open file error (such as invalid file format)
- Power outages or other power-related problems.
- Improper shutdowns, such as caused by power outages or performing a hard restart: pressing and holding the power button or, on Macs so equipped, the restart button.
- Hardware problems or failures, including hard drive failures, bad sectors, bad RAM, and the like.
- Failure to eject external hard drives and related storage devices before disconnecting them or powering them off.
(particularly if it results in either hard restarts or data that is saved incorrectly.)
If you just copy, it's time consuming when there is file corruption.
I am currently using cloudbacko to do backup of files, outlook etc. It really helps me ensure files are kept safe for my users. It's free. You could find it from softpedia or go directly to get from its site. Base on some of my user's request, I could configure cloudbacko to backup files to users' free cloud storage like google drive.