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



ST-34555W Ultra-SCSI Wide (Hawk 4XL)

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º REAR VIEW º  (ST-34555W only)
  ÈÍÍÍÍÍÍÍÍÍÍͼ
        (TOP)                   J1 Auxiliary
          ___________________  ÚÄÄ  Ä1¿/ÍÍÍÍÍÍÍÍÍ\
        Í( ×××××××××××××××××1)ͳ::::::³³ 0 0 0 0 ÆÍ
          \ÄÄÄÄÄÄÄÄÄÄÄijÄÄÄÄ/  À  ÄÄ  ÙÀÄ5ÄGÄGÄ12Ù
       68 pin I/O CableÙ        ³³³³³³
       Connection Male          ³³³³³³
                                ³³³³³³   SCSI ID = 0 (none)
        Auxiliary option header ³³³³³ÀÄÄ SCSI ID = 1
                                ³³³³ÀÄÄÄ SCSI ID = 2
           pin-11 +5v  ÄÄÄÄÄÄÄÄÄÙ³³ÀÄÄÄÄ SCSI ID = 4
           pin-10 GND  ÄÄÄÄÄÄÄÄÄÄÙÀÄÄÄÂÄ SCSI ID = 8
                                      ÀÄÄ or pin-8 Activity LED

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º SIDE VIEW º  (ST-34555W)
  ÈÍÍÍÍÍÍÍÍÍÍͼ

    FRONT    TOP (HDA)    J2  87654321              Õ͸
     OF ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍ͵J1
    DRIVE    BOTTOM           ::::::::              Ô;
                              ³³³³³³³³
  Enable T-Res (W model only) Ù³³³³³³À Terminator Power³
   Start Delay (12 secs * ID) ÄÙ³³³³ÀÄ Terminator Powerÿ
                  Motor Start ÄÄÙ³³ÀÄÄ Reserved         ³
                Write Protect ÄÄÄÙÀÄÄÄ Parity Disable   ³
                                                        ³
    ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿                  ³
    ³ Termination Power-source Table ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ
    ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
    ³          ÍÍÍÍÍ....ÍÍÍÍÍ....ÍÍÍÍÍPWA edgeÍÍÍÍͳ
    ³                       2 1       2 1     2 1  ³
    ³ A Drive Supplies Bus   ÖÄ·     ÖÄ·           ³
    ³ B Drive Supplies Own  øºøº     ºøºø    ÖøÄø· ³
    ³ C Bus Supplies Drive  øÓø½     Óø½ø    ÓøÄø½ ³
    ³ A+B is valid           A         B       C   ³
    ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄDefaultÄÄÄÄÄÄÄÄÄÙ


  ÉÍÍÍÍÍÍÍÍÍÍÍÍ»
  º FRONT VIEW º  (ST-34555W)
  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
                            Remote LED Ù³³³³À ID 1
                           (pin-11 +5v) ³³³ÀÄ ID 2
                              Reserved ÄÙ³ÀÄÄ ID 4
                                         ÀÄÄÄ ID 8

     Caution:  Do not use J2 jumpers on J6.  The internal contacts
               will be bent and cannot be reused on J2 without them
               falling off.



                            ST-34555W


       UNFORMATTED CAPACITY (GB) ________________6.5
       FORMATTED CAPACITY (GB) __________________4.55
       AVERAGE SECTORS PER TRACK ________________176 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________50,488
       CYLINDERS ________________________________6,311 user
       HEADS ______PHYSICAL______________________8
       DISCS (3.5 in) ___________________________4
       MEDIA TYPE _______________________________THIN FILM/MR
       RECORDING METHOD _________________________ZBR PRML (0,4,4)
       INTERNAL TRANSFER RATE (mbits/sec)________72 to 115
       INTERNAL FORMATTED TRANSFER RATE (MB/sec)_
       EXTERNAL TRANSFER RATE (mbyte/sec) _______40 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER (/optional) _______________________512 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________Ultra-SCSI Wide
         ASA II, SCAM level 2 
       BYTES PER TRACK __________________________124,000 average
       SECTORS PER DRIVE ________________________8,888,923
       TPI (TRACKS PER INCH) ____________________6800
       BPI (PEAK KBITS PER INCH) ________________139.2
       AVERAGE ACCESS (ms seek/read/write)_______9.1/10.1/11.2
         Drive level with controller overhead
       SINGLE TRACK SEEK (ms read/write) ________1.3/1.4
       MAX FULL SEEK (ms) _______________________17.5/19.5
       MTBF (power-on hours) ____________________800,000
       SHOCK (G's):
                operating (Read/Write) __________2
                abnormal ________________________10
                nonoperating 11/2 msec __________75/100
       ACOUSTICS (Bels typical, sound power) ____4.2
       POWER DISSIPATION (watts/BTUs) Active ____12.9/44
                                      Idle ______8.8/30
       POWER REQUIREMENTS: +12V START-UP (amps) _2.44
                           +12V TYPICAL (amps) __0.54 idle
                           +5V START-UP (amps) __0.78
                           +5V TYPICAL (amps) ___0.46 idle
                           IDLE (watts) _________8.8
       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):     5.74/145.8
                        Weight    (lbs/kg):      1.5/0.68

Already low-level formatted at the factory with 118 spare sectors at
the end of each 6 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)

A copy of this specification file may be obtained by FTP at
ftp://ftp.seagate.com/techsuppt/scsi/st34555w.txt.