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 1994 ST-12400W SCSI-2 Fast Wide (Hawk 2) �����������ͻ � REAR VIEW � (ST-12400W/WD only) �����������ͼ (TOP) J1-Auxiliary ___________________ ��� �1�/���������\ �( �����������������1)ͳ::::::�� 0 0 0 0 �� \�����������ij����/ � �� 2���5�G�G�12� 68 pin I/O Cable� ������ ������ Auxiliary option header ������ SCSI ID = 0 (none) pin-11 +5v ���������ٳ������� SCSI ID = 1 pin-10 GND ����������ٳ������ SCSI ID = 2 SCSI ID = 8 ������������������ SCSI ID = 4 or pin-8 BUSY ����� ���� or pin-6 REFIND+ �����������ͻ � REAR VIEW � (ST-12400WC only) �����������ͼ 80 pin I/O and DC Power Wall/bracket Connection � Female J1 /���ij���������������\ TOP (HDA) ����������/ �������������������� \���������� (\�1������������������40/) BOTTOM Notes on 80 pin I/O connector: pins 1 - 4 = +12v 41 - 44 = 12v GND 34 - 36 = +5v 74 - 76 = 5v GND 37 = SYNC 77 = LEDC 38 = MTRON 78 = DLYDST 39 = SCSIA0 79 = SCSIA1 40 = SCSIA2 80 = SCSIA3 Mating NC connector: AMP US p/n: 2-557103-1 straight-in, Male 80-pin 2-557101-1 right angle to PCB �����������������ͻ � RIGHT SIDE VIEW � (Both ST-12400W and ST-12400WC) �����������������ͼ BACK �͸ J2 12345678 TOP (HDA) FRONT OF J1�����������������������P�W�A����������������������� OF DRIVE �; :::::::: BOTTOM DRIVE �������� �Terminator Power ٳ������ Reserved ڴTerminator Power �ٳ����� Start Delay (12 secs * ID) � Enable T-Res ��ٳ���� Motor Start � Parity Enable �������� Write Protect � � � ��ST-12400W only ���������������Ŀ �Ĵ Termination Power-source Table � ����������������������������������������������Ŀ ������....�����....�����PWA edge����� � � � � 1 2 1 2 1 2 � � �ķ �ķ A Drive Supplies Bus � � ���� ���� ����� B Drive Supplies Own � � ���� ���� �� �� C Bus Supplies Drive � � A B C � ����������Default������������������������������� Note: The model ST-12400WC drive cannot furnish terminator power, because no pins on the 80 pin I/O connector are devoted to terminator power. ������������ͻ � FRONT VIEW � (ST-12400W only) ������������ͼ TOP (HDA) J6 ������1� ��P�W�A�������������������������͵::::::�� * BOTTOM ������2� � ������ LED �� ������ ������ Auxiliary option header ������ SCSI ID = 0 (none) pin-11 +5v ���������ٳ������� SCSI ID = 1 pin-10 GND ����������ٳ������ SCSI ID = 2 SCSI ID = 8 ������������������ SCSI ID = 4 or pin-8 BUSY ����� ���� or pin-6 REFIND+ If these ID jumper are used, then ID jumpers shown in rear view Aux-J1 or 80 pin I/O cable ARE NOT USED. ������������ͻ � FRONT VIEW � (ST-12400WC only) ������������ͼ TOP (HDA) J6 ������1� ��P�W�A�������������������������͵::::::�� * BOTTOM ������2� � ������ LED �� ������ ������ SCSI ID = 8 ���������ٳ������� Remote LED (pin-2 cathode) SCSI ID = 4 ����������ٳ������ Sync Spindle SCSI ID = 2 �����������ٳ SCSI ID = 0 (none) ������ SCSI ID = 1 ST-12400W Hawk 2 UNFORMATTED CAPACITY (MB) ________________2537 FORMATTED CAPACITY (xx SECTORS) (MB) _____2148 AVERAGE SECTORS PER TRACK ________________84 rounded down ACTUATOR TYPE ____________________________ROTARY VOICE COIL TRACKS ___________________________________49,799 CYLINDERS ________________________________2,621 user HEADS ______PHYSICAL______________________19 DISCS (3.5 in) ___________________________10 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (1,7) INTERNAL TRANSFER RATE (mbits/sec)________26.8 to 45.6 EXTERNAL TRANSFER RATE (mbyte/sec) _______20 Sync SPINDLE SPEED (RPM) ______________________5,411 AVERAGE LATENCY (mSEC) ___________________5.54 BUFFER ___________________________________256/1024 KByte Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________SCSI-2 FAST SECTORS PER DRIVE ________________________ TPI (TRACKS PER INCH) ____________________3000 AVERAGE ACCESS (ms) (read/write)__________9.3/10.8 Drive level without controller overhead SINGLE TRACK SEEK (ms) ___________________1 MAX FULL SEEK (ms) _______________________21 MTBF (power-on hours) ____________________500,000 SHOCK (G's): operating (Read/Write) __________10 nonoperating ____________________60 ACOUSTICS (typ/max dBA) __________________ POWER REQUIREMENTS: +12V START-UP (amps) _2.4 +12V TYPICAL (amps) __0.57 +5V START-UP (amps) __0.8 +5V TYPICAL (amps) ___0.42 TYPICAL (watts) ______8.9 MAXIMUM (watts) ______10.8 WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________0 or NONE Physical: Height (inches/mm): 1.63/41.4 Width (inches/mm): 4.00/101.6 Depth (inches/mm): 5.75/146.1 Weight (lbs/kg): 2.5/0.99 Already low-level formatted at the factory with twelve spare sectors per cylinder and two spare cylinders/unit. ZBR = Zone Bit Recording = Variable sectors per track Seagate reserves the right to change, without notice, product offerings or specifications. (08/26/94)