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


ST-34520N SCSI-3 Ultra (Medalist Pro 4520N SCSI)

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º REAR VIEW º  (ST-34520N)
  ÈÍÍÍÍÍÍÍÍÍÍͼ

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

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

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º SIDE VIEW º  (ST-34520N)
  ÈÍÍÍÍÍÍÍÍÍÍͼ

    FRONT    TOP (HDA)    J2  87654321              Õ͸
     OF ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍPÍWÍAÍÍÍÍÍ͵J1
    DRIVE    BOTTOM           ::::::::              Ô;
                              ³³³³³³³³
  Enable T-Res (N 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
    Note: ND drives do not have internal terminators or any other
          way of adding internal terminators to the drive; use
          external active termination if required.


  ÉÍÍÍÍÍÍÍÍÍÍÍÍ»
  º FRONT VIEW º  (ST-34520N)
  ÈÍÍÍÍÍÍÍÍÍÍÍͼ
                                  ÚÄÄ´Reserved. Shipped with cover installed.
                                  ³  ÀDo not remove. Do not install jumpers
                      TOP (HDA)  ÕØÍÍ͸     1
     ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ
                 *    BOTTOM     ÔÍÍÍ;³³³³³³  External switches can use
                 ³               J6    ³³³³³³  pins 1,3 and 5 to set ID
            LED ÄÙ                     ³³³³³³  
                          Activity LED Ù³³³³À ID 1
                           (pin-11 +5v) ³³³ÀÄ ID 2
                              Reserved ÄÙ³ÀÄÄ ID 4
                              Reserved ÄÄÙ
                         pin-10 ground



                            ST-34520N


       UNFORMATTED CAPACITY (GB) ________________
       FORMATTED CAPACITY (GB) __________________4.55
       AVERAGE SECTORS PER TRACK ________________246 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________36,024
       CYLINDERS ________________________________9,006 user
       HEADS ______PHYSICAL______________________4
       DISCS (3.5 in) ___________________________2
       MEDIA TYPE _______________________________THIN FILM/MR
       RECORDING METHOD _________________________ZBR EPRML (16/17)
       INTERNAL TRANSFER RATE (mbits/sec)________110 to 193.88
       INTERNAL FORMATTED TRANSFER RATE (MB/sec)_14.0
       EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER (/optional) _______________________512 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________SCSI-3 Ultra
         ASA II, S.M.A.R.T., SCAM level 2 
       BYTES PER TRACK __________________________115,078 average
       SECTORS PER DRIVE ________________________8,888,924
       TPI (TRACKS PER INCH) ____________________9570
       BPI (PEAK KBITS PER INCH) ________________179.2
       AVERAGE ACCESS (ms read/write)____________9.5/10.5
         Drive level with controller overhead
       SINGLE TRACK SEEK (ms read/write) ________2.5/3.5
       MAX FULL SEEK (ms) _______________________21.0/23.5
       MTBF (power-on hours) ____________________800,000
       SHOCK (G's):
                operating (Read/Write) __________10
                abnormal ________________________
                nonoperating 11/2 msec __________75/200
       ACOUSTICS (Bels typ/max) _________________3.9/4.2
       POWER DISSIPATION (watts/BTUs) Active ____14.1/48.1
                                      Idle ______12.3/42.0
                                      Standby ___4.1/14.0
       POWER REQUIREMENTS: +12V START-UP (amps) _2.5
                           +12V TYPICAL (amps) __0.81 idle
                           +5V START-UP (amps) __
                           +5V TYPICAL (amps) ___0.51 idle
                           IDLE (watts) _________11.0
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):     1.007/26.9
                        Width  (inches/mm):     4.000/101.6
                        Depth  (inches/mm):     5.754/146.15
                        Weight    (lbs/kg):       1.5/0.68

Already low-level formatted at the factory with 8033 spare sectors 
per volume for both P and G lists.  

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product 
offerings or specifications. (01/14/99)