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