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                         SEAGATE TECHNOLOGY, INC.
       Customer Technical Support FAX Network +1 408 438-8137
     Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
??????????????????????????????????????????????????????????????????????
? United States    +1 408 438-8771 ?  United Kingdom +44 628 478011  ?
??????????????????????????????????????????????????????????????????????
? Germany         +49  89 140-9331 ?  Singapore      +65   227-2217  ?
??????????????????????????????????????????????????????????????????????
                            (C)opyright 1991



ST-41651N  Wren 8 FH SCSI-2 Fast

20-pin (2x10) configuration jumper-block version

                        ? Synchronous Spindles option         DC
                        ?                                     Power
                        ?   ??????????????????????????????? /?????????\
      ????????P?W?A??????????:SCSI:Cable:::::::::::::::::1??? 0 0 0 0 ???
      ???             ????? ??????????????????????????????? ??5?G?G?12?
      ?o?o o o o o o o?o o?   ???????1 ???????1 ???????1
      ?o?o o o o o o o?o o?   ???????? ???????? ????????
      ???  4 2 1      ?????     Terminator SIPS
       ? ? ????? ? ? ?
       ? ?   ?   ? ? ?? Motor Start Delay (16 secs * ID)
       ? ?   ?   ? ???? Parity check enable
       ? ?   ?   ?????? Motor Start option enable
       ? ?   ?????????? Drive ID's, ID 0 (none) if only SCSI device
       ? ?????????????? Terminator power to the Bus (vertical)
       ???????????????? Terminator power from Drive, default (vertical)
                      ? Terminator power from Bus (lower horizontal)


16-pin (2x8) configuration jumper-block version

        ? Synchronous Spindles option                         DC
        ?                                                     Power
        ?                   ??????????????????????????????? /?????????\
      ????????P?W?A??????????:SCSI:Cable:::::::::::::::::1??? 0 0 0 0 ???
      ?????                 ??????????????????????????????? ??5?G?G?12?
      ?o o?o o o o o o        ???????1 ???????1 ???????1  ???
      ?o o?o o o o o o        ???????? ???????? ????????  ?o?o
      ?1???4 2 1 M P            Terminator SIPS           ?o?o??
           ????? ? ? ?                                    ???? ?
             ?   ? ? ?? Motor Start Delay (16 secs * ID)   ? ? ?
             ?   ? ???? Parity check enable                ? ? ?
             ?   ?????? Motor Start option enable          ? ? ?
             ?????????? Drive ID's, ID 0 (none) if         ? ? ?
                         only SCSI device                  ? ? ?
                                                           ? ? ?
         Terminator power from Drive, default (vertical) ??? ? ?
                  Terminator power to the Bus (vertical) ????? ?
            Terminator power from Bus (lower horizontal) ???????

Both versions:

           LED
          ?????      (Viewed from front of drive)          ? GND
          ? 0 ?                                            ?
      ??????????????????????P?W?A???????????????????????????????????????
                                                         o o o  J6
                                         pin-1 (+5v) ----o o o
                                                         ? ? ?
                                 Remote LED connection ??? ? ?
                                  Write Protect Remote ????? ?
                               Switch cable connection ?     ?
                                      Factory Use Only ???????


                             ST-41651N
                             WREN 8 FH

       UNFORMATTED CAPACITY (MB) ________________1,650
       FORMATTED CAPACITY (xx SECTORS) (MB) _____1,415*
       AVERAGE SECTORS PER TRACK (with spares)___87
       ACTUATOR TYPE ____________________________ROTARY VOICE COIL
       TRACKS ___________________________________31,605
       CYLINDERS ________________________________2,107 (user)
       HEADS ____________________________________15
       DISCS (5.25 in) __________________________8
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________ZBR RLL (1,7)
       INTERNAL TRANSFER RATE (mbits/sec) _______17 to 32
       EXTERNAL TRANSFER RATE (Mbytes/sec) ______10.0 Sync.
       SPINDLE SPEED (RPM) ______________________3,600
       AVERAGE LATENCY (mSEC) ___________________8.33
       BUFFER ___________________________________256 Kbyte
         Read Look-Ahead, Adaptive, Multi-
         Segmented Cache
       INTERFACE ________________________________SCSI-2 Fast
       BYTES PER TRACK __________________________54,900 avg.
       SECTORS PER DRIVE ________________________2,749,635
       TPI (TRACKS PER INCH) ____________________1,760
       BPI (BITS PER INCH) ______________________
       AVERAGE ACCESS (ms) ______________________15
       SINGLE TRACK SEEK (ms) ___________________2.5
       MAX FULL SEEK (ms) _______________________34
       MTBF (power-on hours) ____________________150,000
       POWER REQUIREMENTS: +12V START-UP (amps) _4.5
                           +12V TYPICAL (amps) __1.5
                           +5V START-UP (amps) __0.8
                           +5V TYPICAL (amps) ___0.6
                           TYPICAL (watts) ______21
                           MAXIMUM (watts) ______58
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________0 or NONE


	
Already low-level formatted at the factory with one spare sector per


track and two spare cylinders/unit.


Seagate reserves the right to change, without notice, product
offerings or specifications. (10/31/91)