@DarthCoin @Skipper Many thanks to both of you for this great debate full of good information that invites me to continue discovering more things that I still don't know about. I will investigate more about both solutions to find a solution to my family's need.

I understand that it is good to have powerful storage at home and that's it. Sicornizing a laptop and phone is not a bad option, but the option of having encrypted files on the Internet, in this case the cloud, is not ruled out either. So that we can access them from anywhere in the world. Even if we have lost our phone or laptop. With the keys or codes that unlock the information, we can have it again, even if we lost the physical backups (laptop and phone).