Thank you a lot, Mitch! Your descriptions help me to understand RAID hardware a bit better.
Nice, I already use ZFS, so I guess I just need to figure out how to put it in RAID1 mode...
https://pve.proxmox.com/wiki/ZFS_on_Linux
They also talk about need for: https://en.wikipedia.org/wiki/ECC_memory
And a lot of that RAM, because it helps the caching etc...
Do you use RAID1 with two disks always? Contemplating RAID10 with 4 disks... speed + safety... speed isn't even that important to me, things shall just work... and speed critical applications can go in RAMFS/TMPFS anyway.
Right, I developed that impression aswell, they will format the disk as they please and I will be stuck on proprietary hardware and file formats etc.
Do I need a HBA adapter for additional storage or what is it good for?