It's RAID1
It's RAID1
One reason I thought of this was that it's taking forever to manually copy files from the corrupt volume to an external hard drive anyhow, and I trust the external drive less. It's honestly not even that much data – I can't imagine internally copying from one drive to another would take longer.
I'm like 99% sure it's RAID1, but it might be SHR. I'm sure it's not RAID0.
6TB