In various implementations, {TAIL ~ the non volatile memory module} is a component in {HEAD ~ a storage system} and is external to and coupled with a storage controller 
In various implementations , { TAIL ~ the non volatile memory module } is a component in { HEAD ~ a storage system } and is external to and coupled with a storage controller
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH