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st4144r.txt
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1993-06-14
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SEAGATE TECHNOLOGY, INC.
Technical Support Bulletin Board
408/438-8771 [300-9600 HST, MNP 3/5, N-8-1]
(C)opyright 1990
ST-4144R
/─4─3─2─1─\
│ O O O O │ Power
└─────────┘
┌Data Cable ┌Controller Cable 1 5 G G 12
═════════ ══ ════════════════════ ═══ ════════════
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
TRANSFER RATE (mbits/sec) ________________7.5
INTERFACE ________________________________ST412
TPI (TRACKS PER INCH) ____________________1,031
BPI (BITS PER INCH) ______________________14,688
AVERAGE ACCESS (ms) ______________________28
SINGLE TRACK SEEK (ms) ___________________6
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)