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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)
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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-4144R ST412 RLL
?12?G?G?5??
? 0 0 0 0 ?
?Data Cable ?Controller Cable 1 \?1?2?3?4?/
????????? ?? ???????????????????? ??? ????????????
o o o o o o o o 1?????????????
o o o o o o o o ??????????????
Drive Select->1 2 3 4 ? ? ? ? ?Resistor Termination Pack
? ? ? ? ? ? ?
? ??? ? ? ? ?
? ? ? ? ? ? Radial
? ? ? ? ??? Recovery Mode
? ? ? ????? Write Fault
? ? ??????? Not Connected
? ?????????? Never Used (Drive Select 3 and 4)
? If twisted cable, use Drive Select 2
ST - 4144R
UNFORMATTED CAPACITY (MB) ________________144.0
FORMATTED CAPACITY (26 SECTORS) (MB) _____122.7
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________9,216
CYLINDERS ________________________________1,024
HEADS ____________________________________9
DISCS ____________________________________5
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________RLL (2,7)
TRANSFER RATE (mbits/sec) ________________7.5
SPINDLE SPEED (RPM) ______________________3,600
AVERAGE LATENCY (mSEC) ___________________8.3
INTERFACE ________________________________ST412
SECTORS PER DRIVE ________________________239,616
TPI (TRACKS PER INCH) ____________________1,031
BPI (BITS PER INCH) ______________________14,688
AVERAGE ACCESS (ms) ______________________28
SINGLE TRACK SEEK (ms) ___________________6
MAX FULL SEEK (ms) _______________________55
MTBF (power-on hours) ____________________40,000
POWER REQUIREMENTS: +12V START-UP (amps) _4.0
+12V TYPICAL (amps) __1.3
+5V TYPICAL (amps) ___1.3
TYPICAL (watts) ______23
MAXIMUM (watts) ______55
BUFFERED STEP PULSE RATE (micro sec) _____3-70
WRITE PRECOMP (cyl) ______________________N/A (1025)
REDUCED WRITE CURRENT (cyl) ______________N/A (1025)
LANDING ZONE (cyl)________________________AUTO PARK
IBM AT DRIVE TYPE ________________________*
* 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)