                         SEAGATE TECHNOLOGY, INC.
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Ŀ
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                            (C)opyright 1993



ST-15150N SCSI-2 Fast (Barracuda 4)

 ͻ               J01Ŀ  1Ŀ J4-1Ŀ
  REAR VIEW               (see   ĳ "                          
 ͼ               below) "                          
                                        "J4 1-11                   
                                        "(see detail below)        
                                        "                          
(TOP)                                   "J4-11                   
      /\                        
     ͵::::::::::::::::::::::::1Ƴ 0 0 0 0                        
      ͳ5GG12                    5   1
 50 pin I/O Cable Connection                   : : : : : : : : : : :
                                                         6  2
                              SCSI ID = 0 (none)           
                              SCSI ID = 4           
                              SCSI ID = 2          
                              SCSI ID = 1         
                        Reserved (default OFF)        
                        Parity Disable       
                        Enable Motor Start      
                        Delay Motor Start (10 sec * ID)     
                        Write Protect Enable    
                        Remote LED Connector   
                         [pin-5 cathode (neg), pin-6 anode (pos)]   
                        Reserved (default OFF)  
                        Spindle Synch Cable Connector 
                          (pin-1 SSREF, pin-2 ground)

           ST-15150N only Ŀ
           J01 - Terminator Power 2x3 jumper block 
          
                                                    2͸
            Enable Drive Terminators                  
                                                    1 

            Terminator power from the drive.           ͸
              (default)                               
                                                     1  

            Terminator power from pin 26 on the          ͸
              SCSI bus.                                
                                                     1 

            Terminator to the SCSI bus on pin 26.      ͸
                                                      
                                                     1

            Terminator power to the SCSI bus and       ͸
              drive.                                  
                                                     1

    Note: ST-15150ND (differential model) does not come with any
          provision to use Termination resistors.  Therefore, SCSI bus
          needs to be externally terminated.

           ST-15150ND only Ŀ
           J01 - Terminator Power 2x2 jumper block 
          
                                                    1͸ 2
            Terminator to the SCSI bus on pin 26.    
            (all other J01 jumper positions are      
             invalid)


                            ST-15150N


       UNFORMATTED CAPACITY (MB) ________________5062
       FORMATTED CAPACITY (xx SECTORS) (MB) _____4294
       AVERAGE SECTORS PER TRACK ________________107 rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________77,931
       CYLINDERS ________________________________3,711 user
       HEADS ______PHYSICAL______________________21
       DISCS (3.5 in) ___________________________11
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (1,7)
       INTERNAL TRANSFER RATE (mbits/sec)________47.4 to 71.9
       EXTERNAL TRANSFER RATE (mbyte/sec) _______4 Async
       EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
       SPINDLE SPEED (RPM) ______________________7,200
       AVERAGE LATENCY (mSEC) ___________________4.17
       BUFFER ___________________________________1024 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________SCSI-2 FAST
                                                 ASA II
       BYTES PER TRACK __________________________64,773 average
       SECTORS PER DRIVE ________________________7,812,500
       TPI (TRACKS PER INCH) ____________________4,048
       BPI (BITS PER INCH) ______________________73,820
       AVERAGE ACCESS (ms) (read/write)__________8.0/9.0
         Drive level without controller overhead
       SINGLE TRACK SEEK (ms) ___________________0.6/0.9
       MAX FULL SEEK (ms) _______________________17/19
       MTBF (power-on hours) ____________________800,000
       SHOCK (G's):
                operating (Read/Write) __________2
                nonoperating ____________________50
       ACOUSTICS (typ/max dBA) __________________4.7/
       POWER REQUIREMENTS: +12V START-UP (amps) _2.18
                           +12V TYPICAL (amps) __0.83 idle
                           +5V START-UP (amps) __1.0
                           +5V TYPICAL (amps) ___0.76 idle
                           IDLE (watts) _________14
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):     1.63/41.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.97/151.6
                        Weight    (lbs/kg):     2.3/1.04

Already low-level formatted at the factory with 9 spare sectors
per cylinder and 1 spare cylinder per unit.

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product
offerings or specifications. (08/26/94)
