AOH :: ST3283N.TXT
Seagate ST3283N SCSI Hard Disk Specs and Docs
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SEAGATE TECHNOLOGY, INC.
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Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
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(C)opyright 1991
ST-3283N
Rear View 旼 50 pin SCSI Interface I/O connector
�
� DC power
(top)郞袴袴袴袴袴袴袴袴袴袴袴袴� /�5횳횳�12\
袴袴�::::::::::::::::::::::::1팠� 0 0 0 0 팠
(bottom)突袴袴袴袴袴袴袴袴袴袴袴袴� 읕컴컴컴컴�
旼컴컴1 旼컴컴1 旼컴컴1
읕컴컴� 읕컴컴� 읕컴컴�
Terminating Resistor Packs
ST-3283N
Left View
(top) 郞�
Front....袴袴袴袴袴袴袴袴袴袴袴袴袴袴� I/O connector
o o o 突�
SCSI ID Address o o o
� � �
ID 1 켸 � �
ID 2 컴켸 �
ID 4 컴컴켸
ST-3283N
Right View
郞� 1o o o
DC Power 팠袴袴袴袴袴 o쿽 o6袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴
突� 1o o 컴좔컴� o o
o쿽4 Active/Passive Termination o o
컴좔� 컴쩡컴� � �
Terminator Power 旼컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴커 � � Remote Start
컴쩡� � Active: Pins 1 & 2 shorted � 읕� Parity Enable
� � only (+2.85V to �
� � 110 �) for FAST �
� � SCSI; default �
� 쿛assive: Pins 2 & 4 shorted �
� � AND pins 5 & 6 shorted �
� � (+5V and GND to �
� � 220/330 �) for �
� � standard SCSI. �
� 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸
�
旼컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
쿟erminator Power: From SCSI Connector 컴컴컴컴컴컴컴컴 Pins 1 & 2 �
� From Power Connector 컴컴컴컴컴컴컴� Pins 1 & 3 �
� To SCSI Connector Only 컴컴컴컴컴컴� Pins 3 & 4 �
� From Power Connector and 컴컴컴컴컴� Pins 1 & 2 AND �
� to SCSI Bus (default) ----------------- 3 & 4 �
� Terminating Resistors not Installed � Pins 2 & 4 �
읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸
ST-3283N
Front View Clock Ground 커 旼 (Pin 3 removed for key)
� �
(top) -o o o o o � o1
袴袴袴袴袴袴袴袴袴袴袴袴�+o o o o o o o 袴袴�
(bottom) � � � 읕쩡컴�
� � � �
Remote LED 컴컴켸 � � �
Reserved 컴컴컴켸 � �
Ext. Spindle Clock Synch 컴컴컴컴켸 �
Reserved � �
Reserved 쳐컴컴컴컴컴켸
Reserved �
Reserved �
ST-3283N
UNFORMATTED CAPACITY _____________________
FORMATTED CAPACITY (xx SECTORS) __________248.62
AVERAGE SECTORS PER TRACK ________________57 rounded down
ACTUATOR TYPE ____________________________STRAIGHT ARM
TRACKS ___________________________________8,455
CYLINDERS ________________________________1,691 (user)
HEADS ____________________________________5
DISCS (3.5 in) ___________________________3
MEDIA TYPE _______________________________THIN FILM
HEAD TYPE ________________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec) _______15.0 to 24.4
SPINDLE SPEED (RPM) ______________________4,500
AVERAGE LATENCY (mSEC) ___________________6.67
BUFFER ___________________________________128 Kbyte SeaCache
INTERFACE ________________________________SCSI-2 Fast
BYTES PER TRACK __________________________
SECTORS PER DRIVE ________________________485,601
TPI (TRACKS PER INCH) ____________________1,960
BPI (BITS PER INCH) ______________________38,000
AREAL DENSITY (MBits/sq in) ______________
AVERAGE ACCESS (ms) ______________________12
SINGLE TRACK SEEK (ms) ___________________<4
MAX FULL SEEK (ms) _______________________35
MTBF (power-on hours) Office _____________200,000
POWER REQUIREMENTS: +12V START-UP (amps) _1.5
+5V TYPICAL (amps) ___0.55
POWER MANAGEMENT (Watts):
ACTIVE _______________5.7
IDLE _________________3.5
STANDBY ______________1.0
SLEEP ________________
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO
IBM AT DRIVE TYPE ________________________0
Physical:
Height (inches/mm): 1.00/25.4
Width (inches/mm): 4.02/102.1
Depth (inches/mm): 5.77/146.6
Weight (lbs/kg): 1.5/0.68
Note: If FAST SCSI transfer rates are used, then the active
termination options must be used. If the transfer rates are 5.0
MBytes/sec and below, either method of termination can be used.
Although active and passive terminated devices can be installed on the
same bus, both ends of the cable should be terminated in the same
manner, either both active or both passive.
Note: If your application requires no terminators, remove the
terminators from the circuit board. Merely removing the terminator
power source selection jumper does not disconnect the terminator
resistors from the circuit.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (10/23/91)
^Z
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