                         SEAGATE TECHNOLOGY, INC.
     Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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 United States    +1 408 438-8771   United Kingdom +44 628 478011  
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                            (C)opyright 1991



ST-125A

                                     /\
                                     O O O O
                                     5GG12
         
          o o o  ....................1
          o o o  ....................
            
           0 1  Single Drive            0=open
           1 1  Dual-Drive Master       1=closed
           1 0  Dual-Drive Slave
          
           Optional External LED


                         ST - 125A

       UNFORMATTED CAPACITY (MB) ________________25
       FORMATTED CAPACITY (26/17 SECTORS) (MB) __21.5
       ACTUATOR TYPE ____________________________STEPPER
       TRACKS ___________________________________1,616
       CYLINDERS ___PHYSICAL/LOGICAL_____________404/615
       HEADS ____________________________________4
       DISCS ____________________________________2
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbits/sec) ________________7.5
       INTERFACE ________________________________AT BUS
       TPI (TRACKS PER INCH) ____________________824
       BPI (BITS PER INCH) ______________________16,546
       AVERAGE ACCESS (ms) ______________________40/28*
       SINGLE TRACK SEEK (ms) ___________________8
       MTBF (power-on hours) ____________________150,000
       POWER REQUIREMENTS: +12V START-UP (amps) _2.0
                           +12V TYPICAL (amps) __0.35
                           +5V TYPICAL (amps) ___0.9
                           TYPICAL (watts) ______9
                           MAXIMUM (watts) ______29
       BUFFERED STEP PULSE RATE (micro sec) _____3-200
       WRITE PRECOMP (cyl) ______________________N/A (405)
       REDUCED WRITE CURRENT (cyl) ______________N/A (405)
       LANDING ZONE (cyl)________________________AUTO PARK
       IBM AT DRIVE TYPE ________________________6

       *ST125A-0/ST125A-1

PHYSICAL/LOGICAL equivalent to NATIVE/TRANSLATION

!WARNING! - Already low-level formatted at the factory.

Since a User-definable or Custom translation geometry may
be used, it is imperative that the values be written down
and kept with your permanent records for retrieval in the
event of CMOS battery failure.

Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)
