The MariaDB databases have been relocated to an old low-use, low-hour 60GB SATA 3.0 SSD, specifically the Kingston SKC300S - SKC300S37A60G.

As a result, the MariaDB databases now respond faster than when they were on the RAID 5 setup. Ironically, they were historically located on the system drive long before the RAID setups were a thing... that would be from 2007 to mid-2011. Of course, the current system drive is also a SATA 3.0 (3.2) SSD...