When you run sysconfig -r you see 1 or more RAID disks labeled “bad label”. When you run the command “disk unfail x.x” it briefly unfails the disk then fails it again and makes it a bad label.
Run the following commands as root at the prompt:
priv set advanced
disk unfail -s x.x (make note that you must use the -s option)
The above will successfully unfail the disk. Now you should run ”disk zero spares”.