You can use a USB drive, an external hard drive, or a NAS to manually move important files and folders from your server into an external storage device.
This is a command line that synchronizes files and directories between your server and another location. It can efficiently transfer only the differences between files, reducing the time and bandwidth required for backups.
Secure copy is a secure file transfer protocol. This allows you to copy files and directories across hosts using SSH.
You can Install an FTP server on your backup location and then use an FTP client to manually upload files from your server to the backup location.
If your server hosts databases, such as MySQL or PostgreSQL, you can manually dump the database contents into a file using database management tools. Transfer these dumps to a backup location for safekeeping.