question about beyondraid

if i put used disk in D5,will the data be erased?
if i put one disk used in D5 back to my computer, will the data be recognized?

Yes - any disk you put in Drobo will be immediately wiped

No - data written to your disks by Drobo is only accessible when the disk in a Drobo, the disk will appear blank to a mac/pc if you try and plug it in driectly