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 �
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� Germany +49 89 140-9331 � Singapore +65 227-2217 �
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(C)opyright 1991
ST-253 (94205-51) Wren 2 HH ST412 MFM
Drive Select ���������Ŀ
o o o o o o o 1 Terminator � O O O O � Power
o o o o o o o ������������Ŀ \���������/
1 2 3 4 R r reserved �������������� 1 12 G G 5
���������� �� ���������������������� ��� ������������������
� � ��Controller Cable
� ���Radial
���������If twisted cable, use Drive Select 2
ST-253
94205-51 WREN 2 HH
UNFORMATTED CAPACITY (MB) ________________51
FORMATTED CAPACITY (17 SECTORS) (MB) _____43
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________4,795
CYLINDERS ________________________________989
HEADS ____________________________________5
DISCS ____________________________________3
MEDIA TYPE _______________________________OXIDE
RECORDING METHOD _________________________MFM
TRANSFER RATE (mbits/sec) ________________5.0
SPINDLE SPEED (RPM) ______________________3,600
INTERFACE ________________________________ST412
TPI (TRACKS PER INCH) ____________________960
BPI (BITS PER INCH) ______________________9,535
AVERAGE ACCESS (ms) ______________________28
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) __1.0
+5V TYPICAL (amps) ___0.4
TYPICAL (watts) ______20
MAXIMUM (watts) ______??
BUFFERED STEP PULSE RATE (micro sec) _____8-200
WRITE PRECOMP (cyl) ______________________128
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO PARK
IBM AT DRIVE TYPE ________________________*, 17 is close
* MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING
AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP
HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE.
Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)
