SEAGATE TECHNOLOGY, INC. Customer Technical Support FAX Network +1 408 438-8137 Customer Technical Support Bulletin Boards (300-9600, 8-N-1) ��������������������������������������������������������������������Ŀ � United States +1 408 438-8771 � United Kingdom +44 628 478011 � ��������������������������������������������������������������������Ĵ � Germany +49 89 140-9331 � Singapore +65 227-2217 � ���������������������������������������������������������������������� (C)opyright 1991 ST-41520N (97501-16G) Elite-1 FH SCSI-2 � � � � � � � ���������� Parity DISable � I/O Board � � �������� Spinup Delay (10 sec) � � � � � � � � � ������ Manual Reset � � � ���� Active LED (red) ��� Spindle Sync � � � � �� Heartbeat LED (green) A� SCSI ID �Ŀ � � � � � 1o-o� �������������������������͸ � o o o   �p n� �::::::::::::::::::::::::1� ����� o o o �o o� �������������������������; o o o o �o-o� �����������1 �����������1 o o o o o-o5 ���ij������� ���ij������� 4 2 1 � �B � T-RES � T-RES only on Motor Start ��� � 3o o4 Differential Enable ��� Select 2o�o1 Plug � � DC Power Connector J15 ����������������������������������͸ 0�0�0�0�0�0�0�0�0�1 � Terminator Power Source Options � ����������������������������������������������������������������������Ŀ � 2 & 3 � Host supplies power over the SCSI Bus for terminators. � � Drive supplies no terminator power. � � 1 & 2 � Drive supplies power for its own terminator resistor-paks � � but not to SCSI Bus. This is the factory setting. � � 4 - Not used. � ������������������������������������������������������������������������ � � � � � � � � � Servo Board � � � � � � � � � Fault LED (red) �����Ŀ Ready LED (green) ��Ŀ � DIP SWITCHES Unit Selected (amber) � � � S3 S2 S1 � � � ��������Ŀ��������Ŀ��������ĿOn    �12345678��12345678��12345678� ������������������������������Off ����������������ٳ �������� � � ���� � Sector Switches (all OFF) ��� � ���� � Runt Sector �8��������� ���� � Sweep Cycle Enable �1�����������ٳ�� � Enable Sweep only on seeks �2������������ٳ� � Manufacturing Test (keep OFF) �3�������������ٳ � Write Enable (default ON) �4��������������� � Unit Select Switches (all OFF) �6�8���������������� ST-41520N Elite-1 FH UNFORMATTED CAPACITY _____________________1,600,930,800 FORMATTED CAPACITY (xx SECTORS) __________1,370,545,152 ** AVERAGE SECTORS PER TRACK (with spares)___74.945 ACTUATOR TYPE ____________________________ROTARY VOICE COIL TRACKS/USER ______________________________35,717/35,666 CYLINDERS/USER ___________________________2,101/2,098 HEADS ____________________________________17 DISCS ____________________________________10 MEDIA TYPE _______________________________THIN FILM HEAD TYPE ________________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (2,7) INTERNAL TRANSFER RATE (mbits/sec) _______26 to 36 EXTERNAL TRANSFER RATE (mbytes/sec) ______5 SPINDLE SPEED (RPM) ______________________5,400 AVERAGE LATENCY (mSEC) ___________________5.56 COMMAND OVERHEAD (msec) __________________<0.5 BUFFER ___________________________________256 Kbyte Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________SCSI-2 BYTES PER TRACK __________________________36,400 to 50,400 SECTORS PER DRIVE ________________________2,768,896 BYTES PER CYLINDER _______________________618,800 to 856,800 TPI (TRACKS PER INCH) ____________________ BPI (BITS PER INCH) ______________________ AREAL DENSITY ____________________________ AVERAGE ACCESS (ms) ______________________11.5 SINGLE TRACK SEEK (ms) ___________________1.7 MAX FULL SEEK (ms) _______________________22.5 MTBF (power-on hours) Class A Room _______250,000 MTBF (power-on hours) Office _____________150,000 POWER DISSIPATION (watts/BTU) ____________ POWER REQUIREMENTS: Single-ended/Differential +12V START-UP (amps) _2.2/3.2 +12V TYPICAL (amps) __1.8/1.8 +5V START-UP (amps) __2.1/2.9 +5V TYPICAL (amps) ___2.0/2.3 TYPICAL (watts) ______31.6/33.1 MAXIMUM (watts) ______36.9/39.4 LANDING ZONE (cyl) _______________________AUTO PARK USER MANUAL PART NUMBER __________________83327300 REFERENCE MANUAL PART NUMBER _____________86627310 IBM AT DRIVE TYPE ________________________0 or NONE OTHER ____________________________________DUAL PORT ZBR = Zone Bit Recording = Variable sectors per track ** Already low-level formatted at the factory with six spare sectors per cylinder, one spare cylinders/unit, one system cylinder/unit, and one diagnostic cylinder/unit. Physical: Height (inches/mm): 3.25/82.6 Width (inches/mm): 5.75/146.1 Depth (inches/mm): 9.9/252.5 Weight (lbs/kg): 9/4.1 Seagate reserves the right to change, without notice, product offerings or specifications. (10/28/91)