SEAGATE TECHNOLOGY, INC.
Technical Support Bulletin Board
408/438-8771  [300-9600 HST, MNP 3/5, N-8-1]
(C)opyright  1990 

Wren 2 HH AT (IDE)       ST-274A (94204-74 or 94204-65)


                                        Master on /Slave off
                                                     Ŀ
                                         Leave as is O O O O  Power
       1              J3                 1  J2      \/
       :::AT:(IDE):Cable::::::::::::::: :: :::::::::   12 G G 5
      


                             ST-274A
                        94204-74 WREN 2 HH

       UNFORMATTED CAPACITY (MB) ________________74
       FORMATTED CAPACITY (26/17 SECTORS) (MB) __65.5
       ACTUATOR TYPE ____________________________VOICE COIL
       TRACKS ___________________________________4740
       CYLINDERS __PHYSICAL/LOGICAL______________948/941
       HEADS ______PHYSICAL/LOGICAL______________5/8
       DISCS ____________________________________3
       MEDIA TYPE _______________________________THIN FILM
       RECORDING METHOD _________________________RLL
       TRANSFER RATE (mbytes/sec) _______________0.937
       INTERFACE ________________________________AT
       TPI (TRACKS PER INCH) ____________________960
       BPI (BITS PER INCH) ______________________13489
       AVERAGE ACCESS (ms) ______________________29
       SINGLE TRACK SEEK (ms) ___________________5
       MTBF (power-on hours) ____________________40,000
       POWER REQUIREMENTS: +12V START-UP (amps) _4.5
                           +12V TYPICAL (amps) __1.5
                           +5V START-UP (amps) __0.6
                           +5V TYPICAL (amps) ___0.4
                           TYPICAL (watts) ______20
                           MAXIMUM (watts) ______58
       BUFFERED STEP PULSE RATE (micro sec) _____
       WRITE PRECOMP (cyl) ______________________N/A
       REDUCED WRITE CURRENT (cyl) ______________N/A
       LANDING ZONE (cyl) _______________________AUTO PARK
       IBM AT DRIVE TYPE ________________________4, *

 * MAY REQUIRE FORMATTING AND PARTITIONING SOFTWARE.  ALSO, CHECK TO 
SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE 
AVAILABLE.

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)
