SEAGATE TECHNOLOGY, INC.
                              1-800-SEAGATE
                          http://www.seagate.com
                            (C)opyright 1996



ST-34501FC Fibre Channel FC-AL, Dual Port (Cheetah 4LP)

  ÉÍÍÍÍÍÍÍÍÍÍÍ»
  º REAR VIEW º  ST-34501FC
  ÈÍÍÍÍÍÍÍÍÍÍͼ
       40 pin I/O and DC Power Wall/bracket Connection
                     ³  Female
    J1          /ÄÄÄijÄÄÄÄÄÄÄÄÄ\      TOP (HDA)
     ÍÍÍÍÍÍÍÍÍÍ/ ×××××××××××××× \ÍÍÍÍÍÍÍÍÍÍ
              (\Ä1ÄÄÄÄÄÄÄÄÄÄÄÄ20/)    BOTTOM

     Notes on 40 pin I/O connector:
            +12v  =  pins  2, 3, 4, 21
            +5v   =  pins  19, 20, 40
            GND   =  pins  6, 22, 23, 26, 29, 32, 35

  Mating FC connector: AMP US p/n: 787317-1 straight-in, Male 40-pin


  ÉÍÍÍÍÍÍÍÍÍÍÍÍ»
  º FRONT VIEW º  (ST-34501FC)
  ÈÍÍÍÍÍÍÍÍÍÍÍͼ

Reserved. Shipped with cover installed.
Do not remove. Do not install jumpers
                                  ³     ÚÂÄÄÄÄ Reserved
                                  ³     ³³ÚÄÄÄ Fault LED
                                  ³     ³³³ÚÄÄ Port B Bypass LED
                                  ³     ³³³³ÚÄ Port A Bypass LED
                      TOP (HDA)  ÕØÍÍ͸ ³³³³1
     ÍÍPÍWÍAÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ͵::::³::::::ÆÍÍ
                 *    BOTTOM     ÔÍÍÍ;³³³ÀÅÙ
                 ³               J6    ³³³ ÀÄÄ Ground
            LED ÄÙ                     ³³ÀÄÄÄÄ Active LED
                                       ³ÀÄÄÄÄÄ Ground
                                       ÀÄÄÄÄÄÄ Remote LED (pin-11 +5v)

  ST34501FC drives have two ports for connection to two
  independent loops.  Both loops may be active, but only
  one of these ports may be receiving or originating data
  at any one time.  Do not connect both ports to the same
  loop.


                            ST-34501FC


       UNFORMATTED CAPACITY (GB) ________________5.59
       FORMATTED CAPACITY (GB) __________________4.52
       AVERAGE SECTORS PER TRACK ________________170 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________52,208
       CYLINDERS ________________________________6,526 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)________122 to 177
       INTERNAL FORMATTED TRANSFER RATE (MB/sec)_11.3 to 16.8
       EXTERNAL TRANSFER RATE (mbyte/sec) _______106.3 Sync
       SPINDLE SPEED (RPM) ______________________10,033
       AVERAGE LATENCY (mSEC) ___________________2.99
       BUFFER ___________ _______________________1024 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________FC-AL 
         Fibre Channel - Arbitrated Loop, ASA II
       BYTES PER TRACK __________________________ average
       SECTORS PER DRIVE ________________________8,887,199
       TPI (TRACKS PER INCH) ____________________6932
       BPI (PEAK KBITS PER INCH) ________________135.4
       AVERAGE ACCESS (ms read/write)____________7.7/8.7
         Drive level with controller overhead
       SINGLE TRACK SEEK (ms read/write) ________0.98/1.24
       MAX FULL SEEK (ms read/write) ____________18.2/19.2
       MTBF (power-on hours) ____________________1,000,000
       SHOCK (G's, 11ms/2ms):
                operating (Read/Write) __________2
                abnormal ________________________10
                nonoperating ____________________50/14
       ACOUSTICS (Bels typical, sound power) ____
       POWER DISSIPATION (watts/BTUs) Active ____18.3/63
                                      Idle ______15.5/53
       POWER REQUIREMENTS: +12V START-UP (amps) _2.239
                           +12V TYPICAL (amps) __1.028 idle
                           +5V START-UP (amps) __1.074
                           +5V TYPICAL (amps) ___1.036 idle
                           IDLE (watts) _________16.2
       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):     5.47/146
                        Weight    (lbs/kg):      1.5/0.68

Already low-level formatted at the factory with 108 spare sectors 
per 12 cylinder region.  

ZBR = Zone Bit Recording = Variable sectors per track


Seagate reserves the right to change, without notice, product 
offerings or specifications. (08/01/97)