I have installed a 3TB internal HDD, I have almost more than 2TB of personal data, this drive will be unplugged after backing up.
My question is that I have music production and photography data with millions of files, I want to ask if is it a good option to use different folders with large amounts of data as ISO image files to save a large number of files from getting corrupted.
Best Answer
Putting a large number of files into a container is exactly the opposite of protecting against corruption.
In case of corruption of the container, you will be then be losing all the files in it, rather than losing just one of your millions of files.
Also, storing the files into the container might need it to be rewritten many times, while getting larger all the time. This means that you will be shortening the lifetime of the disk while doing extensive rewrites. Writing instead the individual files one-by-one will do the minimal number of writes to maximize the disk's lifetime.
As a last remark, there exists only one protection against corruption, which is having more than one copy of the backup.