The storage devices are distributed across the processors to store titles, where {HEAD ~ each title} is divided into {TAIL ~ data chunks} that are distributed across the storage devices 
is divided into
The storage devices are distributed across the processors to store titles , where { HEAD ~ each title } is divided into { TAIL ~ data chunks } that are distributed across the storage devices
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH