                         SEAGATE TECHNOLOGY, INC.
       Customer Technical Support FAX Network +1 408 438-8137
     Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
Ŀ
 United States    +1 408 438-8771   United Kingdom +44 628 478011  
Ĵ
 Germany         +49  89 140-9331   Singapore      +65   227-2217  

                            (C)opyright 1995



ST-31051N SCSI-2 Fast (Hawk 2XL)

  ͻ
   REAR VIEW   (ST-31051N)
  ͼ

         50 pin I/O Cable Connection
         
    J11 /\    TOP (HDA)
     ͵:::::::::::::::::::::::::ͳ 0 0 0 0 
      ; 5GG12    BOTTOM



  ͻ
   RIGHT SIDE VIEW   (ST-31051N)
  ͼ


BACK   ͸       J2  12345678                    TOP (HDA)  FRONT
 OF    J1PWA OF
DRIVE  ;           ::::::::                    BOTTOM     DRIVE
                     
   Terminator Power ٳ Enable T-Res
  ڴTerminator Power ٳ Start Delay (12 secs * ID)
           Reserved ٳ Motor Start
     Parity Disable  Write Protect
  
  
   Ŀ
  Ĵ Termination Power-source Table 
    Ŀ
    ........PWA edge          
                                                  
      1 2     1 2      1 2                        
     ķ       ķ    ķ  A Drive Supplies Bus 
                B Drive Supplies Own 
                   C Bus Supplies Drive 
       A       B        C                         
    Default


  ͻ
   FRONT VIEW   (ST-31051N)
  ͼ
                                  ĴReserved. Shipped with cover installed.
                                    Do not remove. Do not install jumpers
                      TOP (HDA)  ͸     1
     PWA͵::::::::::
                 *    BOTTOM     ;123456
                                J6    
            LED                      
                            Remote LED ٳ ID 1
                           (pin-11 +5v)  ID 2
                              Reserved  ID 4


                            ST-31051N


       FORMATTED CAPACITY (MB) __________________1050
       AVERAGE SECTORS PER TRACK ________________ rounded down
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________
       CYLINDERS ________________________________4,569 user
       HEADS ______PHYSICAL______________________4
       DISCS (3.5 in) ___________________________2
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL (0,4,4)
       INTERNAL TRANSFER RATE (mbits/sec)________40 to 70
       EXTERNAL TRANSFER RATE (mbyte/sec) _______10 Sync
       SPINDLE SPEED (RPM) ______________________5,411
       AVERAGE LATENCY (mSEC) ___________________5.54
       BUFFER ___________________________________256 KByte
         Read Look-Ahead, Adaptive,
         Multi-Segmented Cache
       INTERFACE ________________________________SCSI-2 Fast
                                                 ASA II
       BYTES PER TRACK __________________________
       SECTORS PER DRIVE ________________________
       TPI (TRACKS PER INCH) ____________________
       BPI (BITS PER INCH) ______________________
       AVERAGE ACCESS (ms) (read/write)__________9/10.5
        Drive level without controller overhead
       SINGLE TRACK SEEK (ms) ___________________1
       MAX FULL SEEK (ms) _______________________22
       MTBF (power-on hours) ____________________800,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.0
                           +12V TYPICAL (amps) __0.38 idle
                           +5V START-UP (amps) __
                           +5V TYPICAL (amps) ___0.7 idle
                           IDLE (watts) _________6.3
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE

       Physical:
                        Height (inches/mm):        1/25.4
                        Width  (inches/mm):     4.00/101.6
                        Depth  (inches/mm):     5.75/146.1
                        Weight    (lbs/kg):      1.5/0.68

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

ZBR = Zone Bit Recording = Variable sectors per track

Seagate reserves the right to change, without notice, product
offerings or specifications. (11/02/95)

