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All Seagate SCSI 3_30_94
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ST9235N.TXT
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1994-02-11
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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)
⁄ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¬ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒø
≥ United States +1 408 438-8771 ≥ United Kingdom +44 628 478011 ≥
√ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ≈ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¥
≥ Germany +49 89 140-9331 ≥ Singapore +65 227-2217 ≥
¿ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒ¡ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒŸ
(C)opyright 1993
ST-9235NG
⁄ƒ 40-pin I/O Connector (* see below)
TOP ≥
≥ 1
o o o o
ÕPÕWÕAÕ :::::::::::.:::::::1 ÕÕ¯ ¯ ¯ ¯
≥
pin-17 removed for keying ƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒƒŸ
Pin assignments for the Seagate 2.5" drive SCSI interface connector
(signal) (pin) (signal)
⁄ƒƒƒƒƒƒƒƒƒƒø pin
Reserved (NC) ≥ 1 2 ≥ Reserved (ND) ID1 ID2 ID4
Reserved (NC) ≥ 3 4 ≥ Reserved (ND) ID ⁄ƒƒƒƒƒƒƒƒƒƒƒ
ID1- ≥ 5 6 ≥ ID2- 0 ≥ H H H
ID4- ≥ 7 8 ≥ LED 1 ≥ L H H
¿ƒƒƒƒƒƒƒƒƒƒŸ 2 ≥ H L H
⁄ƒƒƒƒƒƒƒƒƒƒø 3 ≥ L L H
+5v ≥ 1 2 ≥ +5v 4 ≥ H H L
+5v Ret ≥ 3 4 ≥ +5v Ret 5 ≥ L H L
Ground ≥ 5 6 ≥ DB0- 6 ≥ H L L
Ground ≥ 7 8 ≥ DB1- 7 ≥ L L L
Ground ≥ 9 10≥ DB2-
Ground ≥ 11 12≥ DB3- H = high
Ground ≥ 13 14≥ DB4- L = low
Ground ≥ 15 16≥ DB5-
Connector Key ≥ nopin 18≥ DB6-
Ground ≥ 19 20≥ DB7-
Ground ≥ 21 22≥ Parity-
Ground ≥ 23 24≥ TRMPWR
ATN- ≥ 25 26≥ BSY-
Ground ≥ 27 28≥ ACK-
RST- ≥ 29 30≥ MSG-
Ground ≥ 31 32≥ SEL-
I/O- ≥ 33 34≥ C/D-
Ground ≥ 35 36≥ REQ-
+5v Ret ≥ 37 38≥ +5v Ret
+5v ≥ 39 40≥ +5v
¿ƒƒƒƒƒƒƒƒƒƒŸ
ST-9235N
UNFORMATTED CAPACITY _____________________
FORMATTED CAPACITY (xx SECTORS) __________209.8
ACTUATOR TYPE ____________________________ROTARY VOICE COIL
TRACKS ___________________________________
LOGICAL CYLINDERS ________________________985
LOGICAL HEADS ____________________________13
LOGICAL SECTORS PER TRACK ________________32
HEADS ____________________________________6
DISCS (2.5 in) ___________________________3
MEDIA TYPE _______________________________THIN FILM
HEAD TYPE ________________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (2,7)
INTERNAL TRANSFER RATE (mbits/sec) _______up to 16
SPINDLE SPEED (RPM) ______________________3,449
AVERAGE LATENCY (mSEC) ___________________8.69
BUFFER ___________________________________128 Kbyte
INTERFACE ________________________________SCSI
BYTES PER TRACK __________________________
SECTORS PER DRIVE ________________________409,760
TPI (TRACKS PER INCH) ____________________2,750
BPI (BITS PER INCH) ______________________45,500
FCI (FLUX DENSITY) _______________________30,300
AVERAGE ACCESS (ms) ______________________16
SINGLE TRACK SEEK (ms) ___________________5
MAX FULL SEEK (ms) _______________________27
MTBF (power-on hours) Office _____________150,000
SHOCK (G's) operating/nonoperating _______10/150
NG model with 'SafeRite' ______________100/150
POWER REQUIREMENTS: +5V START-UP (amps) __1.3
POWER MANAGEMENT (Watts):
ACTIVE _______________2.5
STANDBY ______________1.8
SHUTDOWN _____________1.08
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO
IBM AT DRIVE TYPE ________________________0
Physical:
Height (inches/mm): 0.75/19.05
Width (inches/mm): 2.76/70.10
Depth (inches/mm): 4.01/101.85
Weight (ozs/kg): 7.25/0.21
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (08/17/93)