While these changes are in progress, the disk array remains on line and {HEAD ~ most host data} is available for access and {TAIL ~ modification} 
is available for
While these changes are in progress , the disk array remains on line and { HEAD ~ most host data } is available for access and { TAIL ~ modification }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL