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ST4350N.TXT
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1991-10-31
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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-4350N (94171-350) Wren 4 FH SCSI
Connects CHASIS ground to ground lug ──────────────┐
Connects SIGNAL ground to ground lug ────────────┐ │
Drive Select ID's ───────┐ │ │
Motor Start Option enable ───┐ │ G G
Parity Check Option enable ─┐ │ ┌─┼─┐ ┌1┬2┐
P M 4 2 1 │o│o│ ┌12─G─G─5─┐
o o o o o │o│o│ │ 0 0 0 0 │ Power
o o o o o └─┴─┘ \─────────/
═══════════════════════════════════════════════════════════════Servo═PWA═
═╤═══════╤════╤═══════════════════════════╤════════╤════════╤══Data═PWA══
1───────┘ │:::SCSI Cable::::::::::::1 │ ┌─┐ 1────────┘
Terminator DIP ╘═══════════════════════════╛ │o│ o Terminator DIP
│o┼─o
└┬┘
Terminator power (+5v) from drive (vertical) ───┘
Terminator power from the Bus (lower horizontal)
ST-4350N
94171-350/M WREN 4 FH
UNFORMATTED CAPACITY (MB) ________________350
FORMATTED CAPACITY (xx SECTORS) (MB) _____300
AVERAGE SECTORS PER TRACK ________________46
ACTUATOR TYPE ____________________________VOICE COIL
TRACKS ___________________________________12708
CYLINDERS ________________________________1412
HEADS ____________________________________9
DISCS ____________________________________5
MEDIA TYPE _______________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (2,7)
TRANSFER RATE (mbytes/sec) _______________1.25-1.875
SPINDLE SPEED (RPM) ______________________3,600
AVERAGE LATENCY (mSEC) ___________________8.33
BUFFER ___________________________________32 Kbyte
Read Look-Ahead, Non-Adaptive,
Single-Segmented Buffer
INTERFACE ________________________________SCSI
TPI (TRACKS PER INCH) ____________________1280
BPI (BITS PER INCH) ______________________19058
AVERAGE ACCESS (ms) ______________________16.5
SINGLE TRACK SEEK (ms) ___________________4
MAX FULL SEEK (ms) _______________________43
MTBF (power-on hours) ____________________100,000
POWER REQUIREMENTS: +12V START-UP (amps) _4.5
+12V TYPICAL (amps) __1.5
+5V START-UP (amps) __2.0
+5V TYPICAL (amps) ___1.8
TYPICAL (watts) ______27
MAXIMUM (watts) ______64
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 ________________________0 or NONE
ZBR = Zone Bit Recording = Variable sectors per track
Already low-level formatted at the factory.
Seagate reserves the right to change, without notice, product
offerings or specifications. (6/26/90)