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                         SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1994




ST-15230N SCSI-2 Fast (Hawk 4)

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º REAR VIEW º  (ST-15230N only)
  ÈÍÍÍÍÍÍÍÍÍÍͼ

         50 pin I/O Cable Connection
         ³
    J1ÕÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ1¸ /ÄÄÄÄÄÄÄÄÄ\    TOP (HDA)
     ͵:::::::::::::::::::::::::Æͳ 0 0 0 0 ³ÍÍ
      ÔÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ; ÀÄ5ÄGÄGÄ12Ù    BOTTOM



  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º REAR VIEW º  (ST-15230NC only)
  ÈÍÍÍÍÍÍÍÍÍÍͼ
                     80 pin I/O and DC Power Connection
                     ³
    J1          /ÄÄÄijÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ\      TOP (HDA)
     ÍÍÍÍÍÍÍÍÍÍ/ ×××××××××××××××××××× \ÍÍÍÍÍÍÍÍÍÍ
              (\Ä1ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ40/)    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

  ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
  º RIGHT SIDE VIEW º  (Both ST-15230N and ST-15230NC)
  ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ


BACK   Õ͸       J2  12345678                    TOP (HDA)  FRONT
 OF    J1ÆÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ OF
DRIVE  Ô;           ::::::::                    BOTTOM     DRIVE
                     ³³³³³³³³
   ³Terminator Power Ù³³³³³³À Enable T-Res
  Ú´Terminator Power ÄÙ³³³³ÀÄ Start Delay (12 secs * ID)
  ³         Reserved ÄÄÙ³³ÀÄÄ Motor Start
  ³    Parity Enable ÄÄÄÙÀÄÄÄ Write Protect
  ³
  ³
  ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
  ÀÄ´ Termination Power-source Table ³
    ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
    ³ÍÍÍÍÍ....ÍÍÍÍÍ....ÍÍÍÍÍPWA edgeÍÍÍÍÍ          ³
    ³                                              ³
    ³  1 2     1 2      1 2                        ³
    ³ ÖÄ·       ÖÄ·    ÖÄÄÄ·  A Drive Supplies Bus ³
    ³ ºøºø     øºøº    ÓøÄø½  B Drive Supplies Own ³
    ³ Óø½ø     øÓø½     ø ø   C Bus Supplies Drive ³
    ³   A       B        C                         ³
    ÀÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ


  ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ»
  º LEFT SIDE VIEW º  (ST-15230N only)
  ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ             If these ID jumpers are used,
                                 then ID jumpers shown in front
                                 view ARE NOT USED.

  FRONT                TOP (HDA)                 J5 ÕÍÍ1¸ Õ͸BACK
   OF   ÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵:::Æ͵J1 OF
  DRIVE                BOTTOM                       ÔÍÍ; Ô;DRIVE
                                                     ³³³
                                               ID 1 ÄÙ³ÀÄ ID 4
                                                    ID 2


  ÉÍÍÍÍÍÍÍÍÍÍÍÍ»
  º FRONT VIEW º  (Both ST-15230N and ST-15230NC)
  ÈÍÍÍÍÍÍÍÍÍÍÍͼ
                                  ÚÄÄ´Reserved. Shipped with cover installed.
                                  ³  ÀDo not remove. Do not install jumpers
                      TOP (HDA)  ÕØÍÍ͸     1
     ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ
                 *    BOTTOM     ÔÍÍÍ;123456
                 ³               J6    ³³³³³³
            LED ÄÙ                     ³³³³³³
                                  ID 4 Ù³³³³À Reserved
                                  ID 2 ÄÙ³³ÀÄ Remote LED (pin-3 +5v)
                                  ID 1 ÄÄÙÀÄÄ Reserved
                                               
      If these ID jumper are used, then ID jumpers shown in left side 
      view J5 or 80 pin I/O cable ARE NOT USED.


                            ST-15230N
                            Hawk 4

       UNFORMATTED CAPACITY (MB) ________________5170
       FORMATTED CAPACITY (xx SECTORS) (MB) _____4294
       AVERAGE SECTORS PER TRACK ________________110
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________75,848
       CYLINDERS ________________________________3,992 user
       HEADS ______PHYSICAL______________________19
       DISCS (3.5 in) ___________________________10
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (1,7)
       INTERNAL TRANSFER RATE (mbits/sec)________33.9 to 61.0
       EXTERNAL TRANSFER RATE (mbyte/sec) _______5.2 Async
       EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
       SPINDLE SPEED (RPM) ______________________5,411
       AVERAGE LATENCY (mSEC) ___________________5.54
       BUFFER ___________________________________512/2048 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________SCSI-2 FAST
                                                 ASA II
       SECTORS PER DRIVE ________________________
       TPI (TRACKS PER INCH) ____________________4200
       AVERAGE ACCESS (ms) (read/write)__________10.4/11.4
         Includes controller overhead
       SINGLE TRACK SEEK (ms) ___________________2.1
       MAX FULL SEEK (ms) _______________________20.6
       MTBF (power-on hours) ____________________800,000
       SHOCK (G's):
                operating (Read/Write) __________10
                nonoperating ____________________60
       ACOUSTICS (typ/max dBA) __________________
       POWER REQUIREMENTS: +12V START-UP (amps) _2.4
                           +12V TYPICAL (amps) __0.54
                           +5V START-UP (amps) __0.61
                           +5V TYPICAL (amps) ___0.36
                           TYPICAL (watts) ______9
                           MAXIMUM (watts) ______11
       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):     5.74/145.8
                        Weight    (lbs/kg):     2.1/0.93

Already low-level formatted at the factory with twelve spare sectors
per cylinder (all twelve spare sectors are on one track) and two
spare cylinders/unit.

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product 
offerings or specifications. (06/24/95)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/scsi/st15230n.txt.