                         SEAGATE TECHNOLOGY, INC.
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                            (C)opyright 1991



ST-41520N  (97501-16G) Elite-1 FH SCSI-2

                                         Parity DISable
        I/O Board                              Spinup Delay (10 sec)
                                           Manual Reset
                                                   Active LED (red)
       Spindle Sync                              Heartbeat LED (green)
     A                          SCSI ID Ŀ       
    1o-o  ͸        o o o  
    p n  ::::::::::::::::::::::::1    o o o
    o o  ;   o o o                       o
    o-o  1   1   o o o                       o
     o-o5  ĳ   ĳ   4 2 1                       
      B        T-RES         T-RES only on          Motor Start 
                       3o o4   Differential            Enable
       Select        2oo1
           Plug           
                                                      DC Power Connector J15
 ͸                 0000000001
   Terminator Power Source Options 
 Ŀ
   2 & 3  Host supplies power over the SCSI Bus for terminators.      
             Drive supplies no terminator power.                       
   1 & 2  Drive supplies power for its own terminator resistor-paks   
             but not to SCSI Bus.  This is the factory setting.        
       4 - Not used.                                                   
 


              
        Servo Board 
              

      Fault LED (red) Ŀ
    Ready LED (green) Ŀ            DIP SWITCHES
Unit Selected (amber)          S3        S2        S1
                            ĿĿĿOn
                            123456781234567812345678
                               Off
                                ٳ  
                                                    
             Sector Switches (all OFF)            
                           Runt Sector 8    
                    Sweep Cycle Enable 1ٳ  
            Enable Sweep only on seeks 2ٳ  
         Manufacturing Test (keep OFF) 3ٳ  
             Write Enable (default ON) 4  
        Unit Select Switches (all OFF) 68


                             ST-41520N
                             Elite-1 FH

       UNFORMATTED CAPACITY _____________________1,600,930,800
       FORMATTED CAPACITY (xx SECTORS) __________1,370,545,152 **
       AVERAGE SECTORS PER TRACK (with spares)___74.945
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS/USER ______________________________35,717/35,666
       CYLINDERS/USER ___________________________2,101/2,098
       HEADS ____________________________________17
       DISCS ____________________________________10
       MEDIA TYPE _______________________________THIN FILM
       HEAD TYPE ________________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (2,7)
       INTERNAL TRANSFER RATE (mbits/sec) _______26 to 36
       EXTERNAL TRANSFER RATE (mbytes/sec) ______5
       SPINDLE SPEED (RPM) ______________________5,400
       AVERAGE LATENCY (mSEC) ___________________5.56
       COMMAND OVERHEAD (msec) __________________<0.5
       BUFFER ___________________________________256 Kbyte
         Read Look-Ahead, Adaptive, Multi-Segmented
         Cache
       INTERFACE ________________________________SCSI-2
       BYTES PER TRACK __________________________36,400 to 50,400
       SECTORS PER DRIVE ________________________2,768,896
       BYTES PER CYLINDER _______________________618,800 to 856,800
       TPI (TRACKS PER INCH) ____________________
       BPI (BITS PER INCH) ______________________
       AREAL DENSITY ____________________________
       AVERAGE ACCESS (ms) ______________________11.5
       SINGLE TRACK SEEK (ms) ___________________1.7
       MAX FULL SEEK (ms) _______________________22.5
       MTBF (power-on hours) Class A Room _______250,000
       MTBF (power-on hours) Office _____________150,000
       POWER DISSIPATION (watts/BTU) ____________
       POWER REQUIREMENTS: Single-ended/Differential
                           +12V START-UP (amps) _2.2/3.2
                           +12V TYPICAL (amps) __1.8/1.8
                           +5V START-UP (amps) __2.1/2.9
                           +5V TYPICAL (amps) ___2.0/2.3
                           TYPICAL (watts) ______31.6/33.1
                           MAXIMUM (watts) ______36.9/39.4
       LANDING ZONE (cyl) _______________________AUTO PARK
       USER MANUAL PART NUMBER __________________83327300
       REFERENCE MANUAL PART NUMBER _____________86627310
       IBM AT DRIVE TYPE ________________________0 or NONE
       OTHER ____________________________________DUAL PORT

ZBR = Zone Bit Recording = Variable sectors per track

** Already low-level formatted at the factory with six spare sectors
per cylinder, one spare cylinders/unit, one system cylinder/unit, and
one diagnostic cylinder/unit.

       Physical:
                        Height (inches/mm):     3.25/82.6
                        Width  (inches/mm):     5.75/146.1
                        Depth  (inches/mm):     9.9/252.5
                        Weight    (lbs/kg):     9/4.1

Seagate reserves the right to change, without notice, product
offerings or specifications. (10/28/91)
