                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1995



ST-19171W Ultra SCSI Wide (Barracuda 9)

  ͻ
   REAR VIEW   (ST-19171W only)
  ͼ
        (TOP)                  J1A Auxiliary
          ___________________    1/\
        ( 1)ͳ:::::: 0 0 0 0 
          \ĳ/      5GG12
       68 pin I/O Cable        
       Connection Male          
                                   SCSI ID = 0 (none)
           pin-11 +5v  ٳ SCSI ID = 1
           pin-10 GND* ٳ or pin-2 Fault LED*
           SCSI ID = 8 Ĵ SCSI ID = 2
            or pin-8 Activity ٳ or pin-4 Vendor Unique*
            LED*                    SCSI ID = 4
        pins 9 & 12 no connection   or pin-6 Spindle Synch*

* 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-19171WC 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 NC connector: AMP US p/n: 2-557103-1 straight-in, Male 80-pin
                                   2-557101-1 right angle to PCB


  ͻ
   SIDE VIEW   (ST-19171W/WC)
  ͼ

    FRONT    TOP (HDA)    J2  87654321              ͸
     OF PWA͵J1 Cable
    DRIVE    BOTTOM           ::::::::              ;
                              
  Enable T-Res (W model only) ٳ Terminator Power
   Start Delay (12 secs * ID) ٳ Terminator Powerÿ
                  Motor Start ٳ Reserved         
                Write Protect  Parity Disable   
                                                        
    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
    (not used on WC model)
    Note: WD drives do not have internal terminators or any other
          way of adding internal terminators to the drive; use
          external active termination if required.


  ͻ
   FRONT VIEW   (ST-19171W/WC)
  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-19171W


       UNFORMATTED CAPACITY (MB) ________________11700
       FORMATTED CAPACITY (MB) __________________9100
       AVERAGE SECTORS PER TRACK ________________168 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________105,480
       CYLINDERS ________________________________5,274 user
       HEADS ______PHYSICAL______________________20
       DISCS (3.5 in) ___________________________11
       MEDIA TYPE _______________________________THIN FILM/MR
       RECORDING METHOD _________________________PRML (0,4,4)
       INTERNAL TRANSFER RATE (mbits/sec)________80 to 124
       EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER (/optional)________________________512/2048 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra-SCSI Wide
                 ASA II, SCAM level 2
       BYTES PER TRACK (avg unformatted) ________102.000
       SECTORS PER DRIVE ________________________17,773,440
       TPI (TRACKS PER INCH) ____________________5555
       BPI (KBITS PER INCH) _____________________91.5 to 124.5
       AVERAGE ACCESS (ms) (read/write)__________9.7/10.7
         Drive level with controller overhead
       SINGLE TRACK SEEK (ms) ___________________0.8/1.4
       MAX FULL SEEK (ms) _______________________19.2/20.2
       MTBF (power-on hours) ____________________1,000,000
       SHOCK (G's, 11/2 ms):
                operating (Read/Write) __________2
                abnormal ________________________10
                nonoperating ____________________50/100
       ACOUSTICS (Bels typical, sound power) ____4.6
       POWER DISSIPATION (watts/BTUs) Active ____14.7/50
                                      Idle ______13/44
       POWER REQUIREMENTS: +12V START-UP (amps) _2.18
                           +12V TYPICAL (amps) __0.73 idle
                           +5V START-UP (amps) __0.92
                           +5V TYPICAL (amps) ___0.84 idle
                           IDLE (watts) _________12.4
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):     1.62/41.1
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.75/146.1
                        Weight    (lbs/kg):     2.3/1.04

Already low-level formatted at the factory with 16 spare sectors
per cylinder and 1 spare cylinder per unit.
ZBR = Zone Bit Recording = Variable sectors per track


Seagate reserves the right to change, without notice, product 
offerings or specifications. (01/11/98)

