{HEAD ~ a management information recording device} for recording information concerning each logical unit and {TAIL ~ information} concerning disk units corresponding to each logical unit in association with each other 
{ HEAD ~ a management information recording device } for recording information concerning each logical unit and { TAIL ~ information } concerning disk units corresponding to each logical unit in association with each other
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH