RAID stands for Redundant Array of Inexpensive Disks; depending on the RAID level we setup, we can achieve data replication and/or data distribution. A RAID setup can be achieved via dedicated hardware or via software. In this tutorial we see how to implement a RAID1 (mirror) via software on Linux, using the mdadm utility.
This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-setup-raid1-on-linux