it is like an Off-Topic thread here.
I run my actual nextcloud 13 server on a Debian Stretch Stable distro.
I have a SDD for the OS, including /var/www/html for nextcloud install
I use a mdamd RAID6 disque array with 6 HDD of 8TO each. ( Seagate Ironwolf Pro ST8000NE0021 )
On top of this, i have a LVM2 PV/VG/LV/ build and mounted as the main nextcloud space.
Everything is working fine !!!
For monitoring my system, i use smartmontools witch is i believe fine.
The results are store and read with munin
The values/output of smartmontools are not really easy to understand as more of the smartvalue use by seagate are “not really known” by the public.
I wonder how you “the community” are monitoring your physical disks. ?