Ok, so right now I have a RAID5 array I created with mdadm. It uses four identical HDDs, one of which is a spare obviously (which is good because I had one fail). Anyway, sincethe enclosure I use can support 8 drives, I'm getting four more HDDs (also identical to the first) and plan on adding them to the current array. Now my hopefully silly question is, do I have to do anything special while adding them, or does mdadm/whatever know which to add as "live" data and which to add as spares? Can I just go "mdadm --add /dev/md0 /dev/sdf1" (and then sdg1, sdh1 and sdi1)? Or do I have to do anything special? Thanks! --