For more information about RAID, see the Disk-HOWTO, Module-HOWTO,
and Parallel-Processing-HOWTO, available from the Linux Documentation
Project and its mirrors (https://www.tldp.org/docs.html#howto).
For more information about clusters and high-availability setups, see:
High-Availability Linux Project, the definitive guide to
load-balancing techniques: https://www.linux-ha.org/