> Are these 2TB SSDs or hard disks? I would counsel very strongly indeed > against using any ARM-based single board computer as a RAID device on > USB connections - they're just *not* up to it.
I don't think the issue is whether they're ARM based.
The issue is simply how you connect the disks: in my experience, disks
connected via USB are simply not quite up to a 24/7 situation,
especially if the disk is USB-powered.
Stefan

