Without this information, {HEAD ~ the operations} provided by {TAIL ~ those hosts} may be erroneous or invalid at best and cause nonrecoverable errors at worse 
provided by
Without this information , { HEAD ~ the operations } provided by { TAIL ~ those hosts } may be erroneous or invalid at best and cause nonrecoverable errors at worse
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH