Have an AS/400 model 400 with 12 disks, one of them insisted to 'retire'.
No Raid and no Mirror.
Just two tapes with SAVSYS (option 21) in my hand.
Searching for help at Midrange.com and other places, I found an excelent overview
from IBM, about what to save (and restore) with the options from the save menu.
Backup/restore overview provided by IBM (.pdf)
Uploaded: 2006.02.22