On Fri, 2006-04-14 at 15:09, Francisco Reyes wrote: > Michael Stone writes: > > > I still don't follow that. Why would the RAID level matter? IOW, are you > > actually wanting 2 spares, or are you just stick with that because you > > need a factor of two disks for your mirrors? > > RAID 10 needs pairs.. so we can either have no spares or 2 spares. Spares are placed in service one at a time. You don't need 2 spares for RAID 10, trust me.