awk -F"\.\.+"   '
BEGIN           {HD = "Device	Manufacturer	Machine Type and Model	FRU Number	Serial Number	Part Number"
                 for (MX=n=split (HD, HDArr, "\t"); n>0; n--)   {SRCH[HDArr[n]]
                                                                 LNG[n] = length(HDArr[n])
                                                                }
                }

/^(SYSTEM|MODEL|PROCESS|NUMBER)/ 

!LEADINDONE &&
!NF             {LEADINDONE    = 1
                 print
                 print HD
                 gsub (/[^\t]/, "-", HD)
                 print HD
                }
!LEADINDONE     {next
                }

NF == 1         {TMPL = RES[HDArr[4]] RES[HDArr[5]] RES[HDArr[6]]
                 if (TMPL != "") for (i=1; i<=MX; i++) printf "%-*s%s", LNG[i], RES[HDArr[i]]?RES[HDArr[i]]:"NA", (i == MX)?ORS:OFS
#                       else     delete CNT[TMPCNT]
                 split ("", RES)
                 split ($0, T, " ")
                 RES[HDArr[1]] = T[1]
                 TMPCNT = T[1]
                 sub (/[0-9]*$/, _, TMPCNT)
                 CNT[TMPCNT]++
                }

NF < 2          {next
                }

                {sub (/^ */, "", $1)
                }

$1 in SRCH      {RES[$1] = $NF
                }

END             {for (i=1; i<=MX; i++) printf "%-*s%s", LNG[i], RES[HDArr[i]]?RES[HDArr[i]]:"NA", (i == MX)?ORS:OFS
                 printf RS
                 for (c in CNT) print "Total", c, ":", CNT[c]
                }

' OFS="\t" file
SYSTEM: nb11cu51
MODEL, TYPE, and SN: IBM,9026-P70,01100699F
PROCESSOR TYPE: PowerPC_RS64-II
NUMBER OF PROCESSORS: 4

Device    Manufacturer    Machine Type and Model    FRU Number    Serial Number    Part Number
------    ------------    ----------------------    ----------    -------------    -----------
rmt0  	EXABYTE     	IBM-20GB              	59H4120   	60171713     	59H4117    
rmt1  	IBM         	03570C11              	NA        	0000000A6844 	NA         
ssa0  	IBM053      	NA                    	 34L5318  	S0237219     	 09L569B   
ssa1  	IBM053      	NA                    	 34L5388  	S0270187     	 09L5695   
rmt1  	IBM         	03570C11              	NA        	0000000A6844 	NA         
hdisk0	IBM         	DNES-309170W          	25L3101     	AJJ55889     	25L1861     
hdisk1	SEAGATE     	DPSS-309170N          	07N3675     	ZD11B560     	07N3721     
pdisk0	IBM         	DRVC09B               	NA        	680BA636SA   	34L8483     
pdisk01	MAC         	DRVC09A               	NA        	680BA636TT   	34L8483     

Total	rmt	:	3
Total	pdisk	:	2
Total	ssa	:	3
Total	pci	:	2
Total	hdisk	:	2
Total	tmscsi	:	2