> > Yes, if two disks belonging to the same mirror go down, I lose my > data. But if two disks which are not from the same mirror go down, I > would like to be able to boot up without any problems. And as someone > else mentioned, what else am I going to do with those 200mb? I'd > rather maintain symmetry and not have to worry which disks /boot is > on, as I'll know that if the data drive survives, then I won't have > any problems with the boot drive either. so, is your / on a 4 spindle mirror too? N-way mirrors require every write to be done N times.