Jochen> in my case it happend by accident :-)
Heh... Don't you just love playing with Netapps?
Jochen> I did some tests about this issue and found out that sometimes Jochen> after removing a disk from the shelf and insert it again the Jochen> filer sees the disk as a new spare. But in most cases those Jochen> disks failes again after a short time.
I managed to fix my six borken disks by using the 'disk unfail' command. And then I did a 'disk spare zero' to force them to be written too. Seems to have done the trick.
John