SEAGATE TECHNOLOGY, INC.
       Customer Technical Support FAX Network +1 408 438-8137
     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  |
+----------------------------------+---------------------------------|
| Germany         +49  89 140-9331 |  Singapore      +65   227-2217  |
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                            (C)opyright 1991



ST-42400N  Elite 2 Fast SCSI-2

                            /- This T-RES only on Differential model
    Spindle Sync \          |       /- Terminator Power Source (see below)--\
               /4--1--\  /--*---1 4o|o3 /------1                            |
               |o oo  A  \-|----/ 2o o1 \--|---/                            |
    o o o o o  |o oo  B    \Terminator DIPS/           Power    o o o o     |
    o o o o o  \------/#=========================#  /12-G-G-5-\ o o o o     |
   =#=#=#=#=#==P=W=A===#::::::::::::::::::::::::1#==# 0 0 0 0 #=#=#=#=#==   |
    4 2 1 | |          \=========================/  \---------/ | | | |     |
    --+-- | |             SCSI Cable Connector                  | | | |     |
      |   | |                                                   | | | |     |
      |   | \-- Master off/Slave on - Spindle Sync              | | | |     |
      |   \---- Write Protect option enable                     | | | |     |
      \-------- SCSI ID                                         | | | |     |
                                   Spinup Delay (10 secs * ID) -/ | | |     |
                                     Motor Start option enable ---/ | |     |
                                          Parity check DISable -----/ |     |
                                            Sweep Cycle enable -------/     |
                                                                            |
#==================================#                                        |
|  Terminator Power Source Options +----------------------------------------/
+----------------------------------+-----------------------------------\
|  2 & 4 - Initiator 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.        |
|  1 & 3                                                               |
|   AND  - Drive supplies power for external terminator at end of the  |
|  2 & 4     daisy chain. Terminator resistor-paks must be removed.    |
|            This option is recommended only for last drive on daisy   |
|            chain.                                                    |
\----------------------------------------------------------------------/


                             ST-42400N
                              Elite 2

       UNFORMATTED CAPACITY _____________________2,501,187,360
       FORMATTED CAPACITY (512 byte blk) ________2,129,644,544
       AVERAGE SECTORS PER TRACK ________________83
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________49,913
       CYLINDERS ________________________________2,627/2,624 (user)
       HEADS ____________________________________19
       DISCS (5.25 in) __________________________11
       MEDIA TYPE _______________________________THIN FILM
       HEAD TYPE ________________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (2,7)
       INTERNAL TRANSFER RATE (mbits/sec) _______30-40
       EXTERNAL TRANSFER RATE (mbyte/sec) _______10 (burst)
       SPINDLE SPEED (RPM) ______________________5,400
       AVERAGE LATENCY (mSEC) ___________________5.55
       COMMAND OVERHEAD (mSEC) __________________<0.5
       BUFFER ___________________________________256 Kbyte
         Read Look-Ahead, Adaptive, Multi-Segmented
         Cache
       INTERFACE ________________________________SCSI-2 FAST
       BYTES PER TRACK __________________________42,000-55,440
       SECTORS PER DRIVE ________________________4,159,462
       BYTES PER CYLINDER _______________________798,000-1,053,360
       TPI (TRACKS PER INCH) ____________________2,250
       BPI (BITS PER INCH) ______________________41,713
       AVERAGE ACCESS (ms) ______________________11
       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) ________________33
       POWER REQUIREMENTS:
                           +12V START-UP (amps) _
                           +12V TYPICAL (amps) __
                           +5V START-UP (amps) __
                           +5V TYPICAL (amps) ___
                           TYPICAL (watts) ______33
                           IDLE (watts) _________30
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________Auto
       USER MANUAL PART NUMBER __________________
       OTHER ____________________________________
        Synchronized Spindles, Sweep Cycle Capability

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):     8.0/203
                        Weight    (lbs/kg):     7.8/3.6


Seagate reserves the right to change, without notice, product
offerings or specifications. (12/14/92)