During an initial microcode load of the storage controller, {HEAD ~ space} in {TAIL ~ the cache} and NVS of each cluster is allocated to buffers with the remaining cache and NVS space being allocated to customer data 
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During an initial microcode load of the storage controller , { HEAD ~ space } in { TAIL ~ the cache } and NVS of each cluster is allocated to buffers with the remaining cache and NVS space being allocated to customer data
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH