SEAGATE TECHNOLOGY, INC. Customer Technical Support FAX Network +1 408 438-8137 Customer Technical Support Bulletin Boards (300-9600, 8-N-1) 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � United States +1 408 438-8771 � United Kingdom +44 628 478011 � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑 � Germany +49 89 140-9331 � Singapore +65 227-2217 � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 (C)opyright 1993 ST-12400W SCSI-2 Fast Wide �袴袴袴袴袴敲 � REAR VIEW � (ST-12400W/WD only) 훤袴袴袴袴袴� (TOP) Auxiliary ___________________ 旼� �1�/袴袴袴袴�\ �( 利利利利利利利利�1)固::::::납 0 0 0 0 팠 \컴컴컴컴컴컴냐컴�/ � 컴 牡�5횳횳�12� 68 pin I/O Cable� 납납납 납납납 납납납 납납납 Auxiliary option header 납납납 pin-11 +5v 컴컴컴컴켸납납� pin-10 GND 컴컴컴컴컴冒납� SCSI ID = 8 컴컴컴컴컴켸납� SCSI ID = 4 컴컴컴컴컴컴눴� or pin-6 REFIND+ 컴컴컴冒� SCSI ID = 2 컴컴컴컴컴컴켸� SCSI ID = 1 컴컴컴컴컴컴컴� SCSI ID = 0 (none) �袴袴袴袴袴敲 � REAR VIEW � (ST-12400WC only) 훤袴袴袴袴袴� 80 pin I/O and DC Power Wall/bracket Connection � Female J1 /컴컴냐컴컴컴컴컴컴컴\ TOP (HDA) 袴袴袴袴袴/ 利利利利利利利利利利 \袴袴袴袴袴 (\�1컴컴컴컴컴컴컴컴컴40/) 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 �袴袴袴袴袴袴袴袴敲 � RIGHT SIDE VIEW � (Both ST-12400W and ST-12400WC) 훤袴袴袴袴袴袴袴袴� BACK 郞� J2 12345678 TOP (HDA) FRONT OF J1팠袴袴袴袴袴袴袴袴袴袴�P�W�A袴袴袴袴袴袴袴袴袴袴袴� OF DRIVE 突� :::::::: BOTTOM DRIVE 납납납납 쿟erminator Power 冒납납냅 Reserved 渼Terminator Power 켸납납읕 Start Delay (12 secs * ID) � Enable T-Res 컴冒냅컴 Motor Start � Parity Enable 컴켸읕컴 Write Protect � � � 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 읕� Termination Power-source Table � 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴커 � 1 2 1 2 1 2 � � 靈� 靈� A Drive Supplies Bus � � 빗빗 編編 廖퀑� B Drive Supplies Own � � 度쏵 咆鞭 度 鞭 C Bus Supplies Drive � � A B C � 넌袴袴....袴袴�....袴袴�PWA edge袴袴� � � � 읕컴컴횯efault컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 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. �袴袴袴袴袴袴� � FRONT VIEW � (Both ST-12400W and ST-12400WC) 훤袴袴袴袴袴暠 TOP (HDA) J6 郞袴袴1� 袴P�W�A袴袴袴袴袴袴袴袴袴袴袴袴袴�::::::팠 * BOTTOM 突袴袴槁 � 납납납 LED 켸 납납납 납납납 납납납 Auxiliary option header 납납납 pin-11 +5v 컴컴컴컴켸납납� pin-10 GND 컴컴컴컴컴冒납� SCSI ID = 8 컴컴컴컫컴켸납� or pin-8 BUSY 컴컴� 납� SCSI ID = 4 컴컴컴컫컴컴冒� or pin-6 REFIND+ 켸 납 SCSI ID = 2 컴컴컴컴컴컴켸� SCSI ID = 1 컴컴컴컴컴컴컴� SCSI ID = 0 (none) If these ID jumper are used, then ID jumpers shown in left side view J5 or 80 pin I/O cable ARE NOT USED. ST-12400W UNFORMATTED CAPACITY (MB) ________________2537 FORMATTED CAPACITY (xx SECTORS) (MB) _____2148 AVERAGE SECTORS PER TRACK ________________84 rounded down ACTUATOR TYPE ____________________________STRAIGHT ARM 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) TRANSFER RATE INTERNAL (mbits/sec)________26.8 to 45.6 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)__________9.0/10.5 Drive level without controller overhead SINGLE TRACK SEEK (ms) ___________________1 MAX FULL SEEK (ms) _______________________19 MTBF (power-on hours) ____________________500,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0 +12V TYPICAL (amps) __0.54 +5V START-UP (amps) __0.8 +5V TYPICAL (amps) ___0.43 TYPICAL (watts) ______9 MAXIMUM (watts) ______ 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. (12/15/93)