                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1997

ST-34573W Ultra SCSI Wide (Barracuda 9LP)
ST-34573LW Ultra2 SCSI Wide (Barracuda 9LP, LVD)

  ͻ
   REAR VIEW   (ST-34573W only)
  ͼ
        (TOP)                  J5 Auxiliary
          ___________________    1/\
        ( 1)ͳ:::::: 0 0 0 0 
          \ĳ/     25GG12
       68 pin I/O Cable        
       Connection Male             SCSI ID = 0 (none)
                                 SCSI ID = 1
                   pin-11 +5v ٳ SCSI ID = 2
                   pin-10 GND ٳ SCSI ID = 4
                                   SCSI ID = 8
      pins 9 & 12 no connection    or pin-8 Activity LED*

* These pins are driven low for 250ms after PWR ON and RESET
  to allow jumper selectable SCSI ID as shown above.


  ͻ
   REAR VIEW   (ST-34573WC only)
  ͼ
                     80 pin I/O and DC Power Wall/bracket Connection
                       Female
    J1          /ĳ\      TOP (HDA)
     /  \
              (\140/)    BOTTOM

     Notes on 80 pin I/O connector:
       pins  1 -  4 = +12v        41 - 44 = 12v GND
            34 - 36 = +5v         74 - 76 = 5v GND
                 37 = SYNC             77 = LEDC
                 38 = MTRON            78 = DLYDST
                 39 = SCSIA0           79 = SCSIA1
                 40 = SCSIA2           80 = SCSIA3

  Mating connector: AMP US p/n: 2-557103-1 straight-in, Male 80-pin
                                2-557101-1 right angle to PCB

  ͻ
   SIDE VIEW   (ST-34573W/WD/LW/WC/DC/LC)
  ͼ

             FRONT    TOP (HDA)    J2  87654321              ͸
              OF PWA͵J1
             DRIVE    BOTTOM           ::::::::              ;
                                       
          Enable T-Res (W model only) Ĵ Terminator Power
 Force Single-ended (LVD models only) ٳ Terminator Powerÿ
           Start Delay (12 secs * ID) ٳ Reserved         
                          Motor Start ٳ Parity Disable   
                        Write Protect                       
                                                                 
            Ŀ                   
             Termination Power-source Table 
            Ŀ
                      ........PWA edgeͳ
                                   2 1       2 1     2 1  
             A Drive Supplies Bus   ķ     ķ           
             B Drive Supplies Own            
             C Bus Supplies Drive            
             A+B is valid           A         B       C   
            Default
            (option A only on WD, or LW models)

      Note: WD, DC, LW and LC drives do not have internal terminators
            or any other way of adding internal terminators to the
            drive; use external active termination if required.
            Use active (ANSI SCSI-2 Alternative 2) terminators
            when terminating the bus.  Use active negation
            terminators when terminating a SCSI Ultra2 bus
            operating in Low Voltage Differential (LVD) mode.


  ͻ
   FRONT VIEW   (ST-34573W/WD/LW/WC/DC/LC)
  ͼ
                                  ĴReserved. Shipped with cover installed.
                                    Do not remove. Do not install jumpers
                      TOP (HDA)  ͸     1
     PWA͵::::::::::
                 *    BOTTOM     ;123456
                                J6    
            LED                      
                            Remote LED ٳ ID 1
                           (pin-11 +5v)  ID 2
                              Reserved ٳ ID 4
                                          ID 8



                            ST-34573W


       FORMATTED CAPACITY (GB) __________________4.551
       AVERAGE SECTORS PER TRACK ________________237 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________37,505
       CYLINDERS ________________________________7,501 user
       HEADS ______PHYSICAL______________________5
       DISCS (3.5 in) ___________________________3
       MEDIA TYPE _______________________________THIN FILM/MR
       RECORDING METHOD _________________________EPR4 16/17
       INTERNAL TRANSFER RATE (mbits/sec)________120 to 190
       EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
            Low Voltage Differential(LVD) _______80 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER (/optional)________________________512/1024 KByte
              (LVD models /optional) ____________1MB/4MB
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra SCSI
              ASA II, SCAM level 2 (1 default)
       BYTES PER TRACK __________________________155,000 average
       SECTORS PER DRIVE ________________________8,888,924
       TPI (TRACKS PER INCH) ____________________8,250
       BPI (PEAK KBITS PER INCH) ________________180
       AVERAGE ACCESS (ms read/write)____________7.4/8.2
         Drive level with controller overhead
       SINGLE TRACK SEEK (ms read/write) ________1.1/1.4
       MAX FULL SEEK (ms read/write) ____________16/18
       MTBF (power-on hours) ____________________1,000,000
       SHOCK (G's, 11/2 ms):
                operating (Read/Write) __________5
                abnormal ________________________10
                nonoperating ____________________75/135
       ACOUSTICS (Bels typical, sound power) ____4.2
       POWER DISSIPATION (watts/BTUs) Active ____16.05/54.8
                                      Idle ______9.75/33.3
       POWER REQUIREMENTS: +12V START-UP (amps) _1.7
                           +12V TYPICAL (amps) __0.5 idle
                           +5V START-UP (amps) __1.2
                           +5V TYPICAL (amps) ___0.75 idle
                           IDLE (watts) _________10
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):      1.0/25.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.47/146
                        Weight    (lbs/kg):      1.3/0.589

Already low-level formatted at the factory with x spare sectors at
the end of each x cylinder region.  

ZBR = Zone Bit Recording = Variable sectors per track


Seagate reserves the right to change, without notice, product 
offerings or specifications. (04/15/98)

