Hi,
so (again) a disk went bad ("faulted") in a ZFS pool.
Server is a hp Proliant Microserver Gen 8 w. 4 x 4TB - the bad/new disk was/is the 1st/left one in the row, no hardware-RAID configured, not hot-plug.
I removed the faulted HD ("zpool offline").
Systems boots fine w. 3 HDs.
After...