The backup part is quite easy - generate a well-known file with 1kb of data and include it in your backups. After the backup completed, validate that you can re

The backup part is quite easy - generate a well-known file with 1kb of data and include it in your backups. After the backup completed, validate that you can restore the well-known file and compare the content of the original and the restored. Easy to automate if you run a well-customizable backup system. Storytime: I did not check the restoration of my backups some time ago and had a faulty harddrive, so I needed to restore the backup. Backup was also as dumb as possible - essentially a tar and encrypting it with openssl. So I reinstalled the server, tried to decrypt it - got the error, that the key was wrong. Took me a good weekend to find out, that openssl changed the default hash algorithm between openssl 1.0 and 1.1. This would not have been catched with the proposed system, but now I really pin all default options in my scripts as well.