a low level format will remove everything making it to where you have to redo the partition and everything else. basically making it like a new drive but still might be posable to recover data on them after

you got to watch out tho cause something can happen during this and screw the drive. i havent had that happen yet but i guess there is always the chance.

i have never done a LLF on a scsi drive before so i dont know what to watch out about.