                         SEAGATE TECHNOLOGY, INC.
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                            (C)opyright 1993



ST-43402ND Dual Port Differential Fast Wide SCSI-2

     Not used
      Write Protect option enable
       Master off/Slave on - Spindle Sync
      
  ſĳJ4A         TOP
  oooo o
  oooo o  o-a-o-o                  Power    o o o o
    o-b-o-o               12GG5Ŀ o o o o  J4B
  ͳ^ͳͳPWA͵ 0 0 0 0 
                              \/    
                                              
 ( \                      Spinup Delay                /)
 \                      (10 secs * ID)           /γ
 γ                     Motor Start                γ
 γ                       option enable          γ
 γ               Parity Check disable         γ
 γ                  Sweep Cycle enable        γ
 γ                                                   γ
 /            Spindle Sync (SSCLK+)                  \γ
 ( /           Spindle Sync (SSCLK-)                    \)
Port B        Key (no pin)                          Port A
             Ground
            port a and b (horizontal)


                (top pin-2) LED 4
                       (bottom pin-1) Manual Reset
To activate J10   Write Protect enable LED
features, pin                         Write Protect enable
is grounded to     Port B active LED
external switch.                     SCSI ID 4
                    Port A active LED
                                    SCSI ID 2
                     Ready LED
                                   Self Test
                      LED 6 (n/a)
                                  Port B dictates Port A's ID
                       Spinup Delay (10 secs * ID)
                                 SCSI ID 1
  PWA            Fault LED
                                Motor Start Option enable
                         Not assigned
       J01B                    SCSI ID 8
 ( \   Ŀ                           Ŀ     /)
 \  4o o3                     J01A  4o o3   /γ
 γ  2oo1  o o o o o o o o o                 2oo1   γ
 γ          1 o o o o o o o o  J10                     γ
 γ     Ĵ      γ
 γ    o     GNDĿ                          γ
 γ   o     o o o o o o o o o                          γ
 /    o o   1 o o o o o o o o  J9                      \γ
 ( /        8 4 2 1 8 4 2 1                             \)
Port B                                   Port A
                                                
        J3                   Port B dictates   
Port A                         Port A's ID      
 enable                    SCSI ID Port A    
Port B          SCSI ID Port B    
 enable                                              
                                                     
 ͸                
   Terminator Power Source Options J01A & J01B 
 Ŀ
   2 & 4  Initiator supplies power over the SCSI Bus for terminators. 
             Drive supplies no terminator power.                       
   1 & 2  Drive supplies power for its own terminator resistor-paks   
             but not to SCSI Bus.  This is the factory setting.        
   1 & 3                                                               
    AND   Drive supplies power for external terminator at end of the  
   2 & 4     daisy chain and supplies own terminator power.            
 
  ST-43402ND does not come with any provision to use Termination resistors.
  Therefore, SCSI bus needs to be externally terminated.


                             ST-43402ND
                              Elite 3

       UNFORMATTED CAPACITY _____________________3,554,871,600
       FORMATTED CAPACITY (512 byte blk) ________2,912,484,864
       AVERAGE SECTORS PER TRACK ________________99 (rounded down)
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________57,435
       CYLINDERS ________________________________2,738/2,735 (user)
       HEADS ____________________________________21
       DISCS (5.25 in) __________________________11
       MEDIA TYPE _______________________________THIN FILM
       HEAD TYPE ________________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (1,7)
       INTERNAL TRANSFER RATE (mbits/sec) _______35-52
       INTERNAL TRANSFER RATE AVG (mbyte/sec) ___6.0
       EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync
       SPINDLE SPEED (RPM) ______________________5,400
       AVERAGE LATENCY (mSEC) ___________________5.55
       COMMAND OVERHEAD (mSEC) __________________<0.5
       BUFFER ___________________________________512 Kbyte
         Read Look-Ahead, Adaptive, Multi-Segmented
         Cache
       INTERFACE ________________________________SCSI-2 FAST Wide
                                                  Dual-Port
       BYTES PER TRACK __________________________49,000-72,800
       SECTORS PER DRIVE ________________________5,696,655
       BYTES PER CYLINDER _______________________1,058,400 to 1,587,600
       TPI (TRACKS PER INCH) ____________________
       BPI (BITS PER INCH) ______________________
       AVERAGE ACCESS (ms) read/write ___________10/11
       SINGLE TRACK SEEK (ms) read/write ________0.9/1.7
       MAX FULL SEEK (ms) read/write ____________22.5/23.5
       MTBF (power-on hours) Class A Room _______300,000
       MTBF (power-on hours) Office _____________200,000
       POWER DISSIPATION (watts) ________________
       POWER REQUIREMENTS: Single-ended/Differential
                           +12V START-UP (amps) _3.98/4.60
                           +12V TYPICAL (amps) __1.90/1.88
                           +5V START-UP (amps) __2.37/3.48
                           +5V TYPICAL (amps) ___1.96/2.77
                      TYPICAL ( watts seek/read)_32.60/36.41
                      IDLE (watts) ______________28.34/31.81
       USER MANUAL PART NUMBER __________________83327630
       OTHER ____________________________________
        Synchronized Spindles, Sweep Cycle Capability

** Already low-level formatted at the factory with six spare sectors
per cylinder, one spare cylinders/unit, one system cylinder/unit, and
one diagnostic cylinder/unit.

       Physical:
                        Height (inches/mm):     3.25/82.6
                        Width  (inches/mm):     5.75/146.1
                        Depth  (inches/mm):     8.0/203
                        Weight    (lbs/kg):     7.8/3.6


Seagate reserves the right to change, without notice, product
offerings or specifications. (08/08/94)

