The computer program product 10, further comprising migrating or reconstructing storage symbols for {HEAD ~ a stripe} into {TAIL ~ new physical storage containers} in conformance with the placement policy that applies to the stripe 
into
The computer program product 10 , further comprising migrating or reconstructing storage symbols for { HEAD ~ a stripe } into { TAIL ~ new physical storage containers } in conformance with the placement policy that applies to the stripe
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH