The system hides configuration changes necessary for the addition and {HEAD ~ removal} of {TAIL ~ disks} to/from the disk array by unstriping data, adding or deleting a disk and then restriping data over all the disks 
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The system hides configuration changes necessary for the addition and { HEAD ~ removal } of { TAIL ~ disks } to / from the disk array by unstriping data , adding or deleting a disk and then restriping data over all the disks
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH