---------------------------------------------------------------------- Contents: 30/10/1991 12:04 4,500 ST1100.TXT 30/10/1991 12:00 3,227 ST124.TXT 11/11/1992 12:21 3,574 ST125.TXT 11/11/1992 12:21 3,573 ST138.TXT 30/10/1991 12:03 3,612 ST151.TXT 12/07/1991 17:37 2,198 ST212.TXT 12/07/1991 17:38 3,013 ST213.TXT 30/10/1991 12:05 3,175 ST225.TXT 30/10/1991 12:06 3,291 ST251.TXT 12/07/1991 17:38 3,272 ST252.TXT 12/07/1991 17:39 3,037 ST253.TXT 12/07/1991 17:39 3,041 ST4026.TXT 12/07/1991 17:39 3,208 ST4038.TXT 12/07/1991 17:39 3,413 ST4051.TXT 12/07/1991 17:39 3,282 ST4053.TXT 12/07/1991 17:39 2,820 ST406.TXT 12/07/1991 17:39 3,212 ST4085.TXT 12/07/1991 17:39 3,134 ST4086.TXT 30/10/1991 12:07 3,501 ST4096.TXT 26/08/1991 18:28 3,211 ST4097.TXT 12/07/1991 17:40 2,766 ST412.TXT 12/07/1991 17:40 2,766 ST419.TXT 12/07/1991 17:40 2,136 ST506.TXT ---------------------------------------------------------------------- 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 1991 ST-1100 (94355-100) Swift ST412 MFM 旼컴\ � O � 5 � O � G � O � G 旼컴 Located on rear � O � 12 � side of drive 읕컴/ � Controller Cable � 袴袴袴袴 袴 袴袴袴袴袴袴袴� 袴 旼컴컴좔컴컴� 픁ata Cable 旼컴컴컴컴커 1 o o o o o o 1컴컴컴컴컴� o o o o o o (front) Terminator 1 2 3 4 R Ext 컴컫컴� � � � � � � � � � � � � � � Drive Selects 컴컴컴� � � Radial Select 컴컴컴컴컴컴� � External spindle clock 컴컴� ST-1100 94355-100 Swift UNFORMATTED CAPACITY (MB) ________________100 FORMATTED CAPACITY (17 SECTORS) (MB) _____83 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________9,648 CYLINDERS ________________________________1,072 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.33 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________164,016 TPI (TRACKS PER INCH) ____________________1,350 BPI (BITS PER INCH) ______________________14,019 AVERAGE ACCESS (ms) ______________________15 SINGLE TRACK SEEK (ms) ___________________4 MAX FULL SEEK (ms) _______________________35 MTBF (power-on hours) ____________________150,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.5 +12V TYPICAL (amps) __0.7 +5V START-UP (amps) __0.75 +5V TYPICAL (amps) ___0.4 TYPICAL (watts) ______10 MAXIMUM (watts) ______12 BUFFERED STEP PULSE RATE (micro sec) _____6-200 WRITE PRECOMP (cyl) ______________________N/A (1073) REDUCED WRITE CURRENT (cyl) ______________N/A (1073) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________35 or * * FORMATTING AND PARTITIONING SOFTWARE MAY BE REQUIRED TO ACHIEVE FULL CAPACITY. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Swift Remote LED Option Front View of Drive Without the Plastic Bezel 旼컴쩡컴� � A � B � B = Anode 쳐컴탠컴� D = Cathode � C � D � ...袴袴袴袴袴袴袴袴賈袴賈袴賈袴袴�P�W�A袴�... � Default jumper at C-D for LED mounted on drive PWA � To use remote LED, remove jumper and extend B (Anode) and D (Cathode). � Swift LED kit 75912397 allows connection to a remote LED � Swift LED kit 95913369 has an LED for attachment to the system front bezel or a 5.25-inch frame kit Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-124 ST412 MFM /컴커 � O �12 � O 쿒 � O 쿒 � O �5 �Data Cable �Controller Cable 1 \컴켸 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 o o o o o o 旼컴컴컴컴컴커 o o o o o o 읕컫컴컴컴컴켸 � � 4 3 2 1 � Resistor Termination Pack located � � 컴컫컴� behind options header (fixed) � � � � � 읕컴� Drive Selects � 읕컴컴컴컴 Factory Test 읕컴컴컴컴컴 Radial ST - 124 UNFORMATTED CAPACITY (MB) ________________25.6 FORMATTED CAPACITY (17 SECTORS) (MB) _____21.4 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________41,820 TPI (TRACKS PER INCH) ____________________824 BPI (BITS PER INCH) ______________________14,953 AVERAGE ACCESS (ms) ______________________40 SINGLE TRACK SEEK (ms) ___________________12 MAX FULL SEEK (ms) _______________________95 MTBF (power-on hours) ____________________150,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.4 +12V TYPICAL (amps) __0.35 +5V TYPICAL (amps) ___0.8 TYPICAL (watts) ______8 MAXIMUM (watts) ______33 BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________6 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-125 ST412 MFM /컴커 � O �12 � O 쿒 � O 쿒 � O �5 �Data Cable �Controller Cable 1 \컴켸 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 1 o o o o o o o 旼컴컴컴컴컴�1 o o o o o o o o 읕컫컴컴컴컴켸 � � � � 4 3 2 1 � Resistor Termination Pack � � � � 컴컫컴� � � � � � � � � � 읕컴� Drive Selects � � � 읕컴컴컴컴 Factory Test � � 읕컴컴컴컴컴 Write Fault � 읕컴컴컴컴컴컴 Not Used 읕컴컴컴컴컴컴컴 Radial Note: Some configurations have the drive select jumper block oriented perpendicular to the back of the drive. In this configuration, pin-1 (radial select) is closest to the front faceplate of the drive. ST - 125 UNFORMATTED CAPACITY (MB) ________________25.6 FORMATTED CAPACITY (17 SECTORS) (MB) _____21.4 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________41,820 TPI (TRACKS PER INCH) ____________________824 BPI (BITS PER INCH) ______________________14,953 AVERAGE ACCESS (ms)*______________________40/28 SINGLE TRACK SEEK (ms) ___________________8 MAX FULL SEEK (ms) _______________________70 MTBF (power-on hours) ____________________150,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0 +12V TYPICAL (amps) __0.35 +5V TYPICAL (amps) ___0.8 TYPICAL (watts) ______8 MAXIMUM (watts) ______28 BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________6 *ST125-0/ST125-1 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-138 ST412 MFM /컴커 � O �12 � O 쿒 � O 쿒 � O �5 �Data Cable �Controller Cable 1 \컴켸 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 1 o o o o o o o 旼컴컴컴컴컴�1 o o o o o o o o 읕컫컴컴컴컴켸 � � � � 4 3 2 1 � Resistor Termination Pack � � � � 컴컫컴� � � � � � � � � � 읕컴� Drive Selects � � � 읕컴컴컴컴 Factory Test � � 읕컴컴컴컴컴 Write Fault � 읕컴컴컴컴컴컴 Not Used 읕컴컴컴컴컴컴컴 Radial Note: Some configurations have the drive select jumper block oriented perpendicular to the back of the drive. In this configuration, pin-1 (radial select) is closest to the front faceplate of the drive. ST - 138 UNFORMATTED CAPACITY (MB) ________________38.4 FORMATTED CAPACITY (17 SECTORS) (MB) _____32.1 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________3,690 CYLINDERS ________________________________615 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________62,730 TPI (TRACKS PER INCH) ____________________824 BPI (BITS PER INCH) ______________________14,953 AVERAGE ACCESS (ms)*______________________40/28 SINGLE TRACK SEEK (ms) ___________________8 MAX FULL SEEK (ms) _______________________70 MTBF (power-on hours) ____________________150,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0 +12V TYPICAL (amps) __0.35 +5V TYPICAL (amps) ___0.8 TYPICAL (watts) ______8 MAXIMUM (watts) ______28 BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________3 *ST138-0/ST138-1 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-151 ST412 MFM /컴커 � 0 �12 � 0 쿒 � 0 쿒 � 0 �5 �Data Cable �Controller Cable 1 \컴켸 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴� o o o o o o o o 旼컴컴컴컴컴�1 o o o o o o o o 읕컫컴컴컴컴켸 � � � � 4 3 2 1 � Resistor Termination Pack (front corner) � � � � 컴컫컴� �o Optional � � � � � 픬 LED � � � � 읕컴� Drive Selects Connector � � � 읕컴컴컴컴 Factory Test � � 읕컴컴컴컴컴 Not Used � 읕컴컴컴컴컴컴 Recovery Mode 읕컴컴컴컴컴컴컴 Radial ST - 151 UNFORMATTED CAPACITY (MB) ________________50.8 FORMATTED CAPACITY (17 SECTORS) (MB) _____42.5 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________4,885 CYLINDERS ________________________________977 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.33 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________83,045 TPI (TRACKS PER INCH) ____________________1,300 BPI (BITS PER INCH) ______________________14,108 AVERAGE ACCESS (ms) ______________________24 SINGLE TRACK SEEK (ms) ___________________8 MAX FULL SEEK (ms) _______________________44 MTBF (power-on hours) ____________________150,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0 +12V TYPICAL (amps) __0.45 +5V TYPICAL (amps) ___0.5 TYPICAL (watts) ______8 MAXIMUM (watts) ______27 BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (978) REDUCED WRITE CURRENT (cyl) ______________N/A (978) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________17 or 11* * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-212 ST412 MFM UNFORMATTED CAPACITY (MB) ________________12.76 FORMATTED CAPACITY (17 SECTORS) (MB) _____10.0 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________1,224 CYLINDERS ________________________________306 HEADS ____________________________________4 DISCS ____________________________________1 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________550 BPI (BITS PER INCH) ______________________10,560 AVERAGE ACCESS (ms) ______________________65 SINGLE TRACK SEEK (ms) ___________________23 MTBF (power-on hours) ____________________11,000 POWER REQUIREMENTS: +12V START-UP (amps) _3.2 +12V TYPICAL (amps) __1.0 +5V TYPICAL (amps) ___1.0 TYPICAL (watts) ______17 MAXIMUM (watts) ______44.4 BUFFERED STEP PULSE RATE (micro sec) _____5-500 WRITE PRECOMP (cyl) ______________________128 REDUCED WRITE CURRENT (cyl) ______________N/A (307) LANDING ZONE (cyl)________________________319 IBM AT DRIVE TYPE ________________________1 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-213 ST412 MFM /�4�3�2�1�\ � O O O O � Power o o o o o o o o 읕컴컴컴컴� �Data Cable o o o o o o o o �Controller Cable 1 5 G G 12 袴袴袴袴� 袴 � � � � � � � � 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 � � � � � � � � 旼컴컴컴컴컴�1 � � � � � � � � 읕Terminator켸 � � � � � � � � Drive Select->1 2 3 4 � � � � Radial � � � � � 읕� Reserved � 읓� � 읕컴� Write Fault � � 읕컴컴� Factory Test � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 213 UNFORMATTED CAPACITY (MB) ________________12.8 FORMATTED CAPACITY (17 SECTORS) (MB) _____10.7 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________1,230 CYLINDERS ________________________________615 HEADS ____________________________________2 DISCS ____________________________________1 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________588 BPI (BITS PER INCH) ______________________9,827 AVERAGE ACCESS (ms) ______________________65 SINGLE TRACK SEEK (ms) ___________________20 MTBF (power-on hours) ____________________20,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.2 +12V TYPICAL (amps) __0.9 +5V TYPICAL (amps) ___0.8 TYPICAL (watts) ______14.8 MAXIMUM (watts) ______30.4 BUFFERED STEP PULSE RATE (micro sec) _____5-200 WRITE PRECOMP (cyl) ______________________300 REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________N/A Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-225 ST412 MFM /�4�3�2�1�\ � O O O O � Power o o o o o o o o 읕컴컴컴컴� �Data Cable o o o o o o o o �Controller Cable 1 5 G G 12 袴袴袴袴� 袴 � � � � � � � � 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 � � � � � � � � 旼컴컴컴컴컴�1 � � � � � � � � 읕Terminator켸 � � � � � � � � Drive Select->1 2 3 4 � � � � Radial � � � � � 읕� Reserved � 읓� � 읕컴� Write Fault � � 읕컴컴� Factory Test � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 225 UNFORMATTED CAPACITY (MB) ________________25.6 FORMATTED CAPACITY (17 SECTORS) (MB) _____21.4 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________41,820 TPI (TRACKS PER INCH) ____________________588 BPI (BITS PER INCH) ______________________9,827 AVERAGE ACCESS (ms) ______________________65 SINGLE TRACK SEEK (ms) ___________________20 MAX FULL SEEK (ms) _______________________150 MTBF (power-on hours) ____________________100,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.4 +12V TYPICAL (amps) __0.9 +5V TYPICAL (amps) ___0.8 TYPICAL (watts) ______14.8 MAXIMUM (watts) ______33 BUFFERED STEP PULSE RATE (micro sec) _____5-200 WRITE PRECOMP (cyl) ______________________300 REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________2 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-251 ST412 MFM /�4�3�2�1�\ � O O O O � Power o o o o o o o o 읕컴컴컴컴� �Data Cable o o o o o o o o �Controller Cable 1 5 G G 12 袴袴袴袴� 袴 � � � � � � � � 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 � � � � � � � � 1컴컴컴컴컴컴� � � � � � � � � 읕Terminator켸 � � � � � � � � Drive Select->1 2 3 4 � � � � Radial � � � � � 읕� Reserved � 읓� � 읕컴� Write Fault � � 읕컴컴� Factory Test � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 251 UNFORMATTED CAPACITY (MB) ________________51.2 FORMATTED CAPACITY (17 SECTORS) (MB) _____42.8 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________4,920 CYLINDERS ________________________________820 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________83,640 TPI (TRACKS PER INCH) ____________________777 BPI (BITS PER INCH) ______________________9,935 AVERAGE ACCESS (ms) ______________________40/28* SINGLE TRACK SEEK (ms) ___________________8 MAX FULL SEEK (ms) _______________________ /70 MTBF (power-on hours) ____________________100,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0/2.5* +12V TYPICAL (amps) __0.5 +5V TYPICAL (amps) ___1.0/1.2* TYPICAL (watts) ______11/12* MAXIMUM (watts) ______29/36* BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (821) REDUCED WRITE CURRENT (cyl) ______________N/A (821) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________44, 40, or 3** *ST251-0/ST251-1 **MAY REQUIRE PARTITIONING SOFTWARE Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-252 ST412 MFM (same as ST-251 with Terminator that cannot be removed, therfore drive must be installed at the end of the daisychain cable.) /�4�3�2�1�\ � O O O O � Power o o o o o o o o 읕컴컴컴컴� �Data Cable o o o o o o o o �Controller Cable 1 5 G G 12 袴袴袴袴� 袴 � � � � � � � � 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 � � � � � � � � 旼컴컴컴컴컴�1 � � � � � � � � 읕Terminator켸- cannot be removed � � � � � � � � Drive Select->1 2 3 4 � � � � Radial � � � � � 읕� Reserved � 읓� � 읕컴� Write Fault � � 읕컴컴� Factory Test � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 252 UNFORMATTED CAPACITY (MB) ________________51.2 FORMATTED CAPACITY (17 SECTORS) (MB) _____42.8 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________4,920 CYLINDERS ________________________________820 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________777 BPI (BITS PER INCH) ______________________9,935 AVERAGE ACCESS (ms) ______________________40/28* SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________100,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0/2.5* +12V TYPICAL (amps) __0.5 +5V TYPICAL (amps) ___1.0/1.2* TYPICAL (watts) ______11/12* MAXIMUM (watts) ______29/36* BUFFERED STEP PULSE RATE (micro sec) _____3-200 WRITE PRECOMP (cyl) ______________________N/A (821) REDUCED WRITE CURRENT (cyl) ______________N/A (821) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________44, 40, or 3** *ST251-0/ST251-1 **MAY REQUIRE PARTITIONING SOFTWARE Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-253 (94205-51) Wren 2 HH ST412 MFM Drive Select 旼컴컴컴컴� o o o o o o o 1 Terminator � O O O O � Power o o o o o o o 旼컴컴컴컴컴커 \컴컴컴컴�/ 1 2 3 4 R r reserved 읕컴컴컴컴컴켸 1 12 G G 5 袴袴袴袴袴 袴 袴袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴袴袴袴 � � 읕Controller Cable � 읕훀adial 읕컴컴컴횵f twisted cable, use Drive Select 2 ST-253 94205-51 WREN 2 HH UNFORMATTED CAPACITY (MB) ________________51 FORMATTED CAPACITY (17 SECTORS) (MB) _____43 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________4,795 CYLINDERS ________________________________989 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________960 BPI (BITS PER INCH) ______________________9,535 AVERAGE ACCESS (ms) ______________________28 SINGLE TRACK SEEK (ms) ___________________5 MTBF (power-on hours) ____________________40,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.5 +12V TYPICAL (amps) __1.5 +5V START-UP (amps) __1.0 +5V TYPICAL (amps) ___0.4 TYPICAL (watts) ______20 MAXIMUM (watts) ______?? BUFFERED STEP PULSE RATE (micro sec) _____8-200 WRITE PRECOMP (cyl) ______________________128 REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________*, 17 is close * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-406 ST412 MFM OPTION SHUNT BLOCK 旼�\컴�/컴� 1 � R � 16 2 � NC � 15 3 � NC � 14 4 � NC � 13 5 � DS4 � 12 6 � DS3 � 11 7 � DS2 � 10 8 � DS1 � 9 읕컴컴컴컴� DS1,DS2,DS3,DS4=DRIVE SELECTED R=RADIAL OPERATION ST - 406 UNFORMATTED CAPACITY (MB) ________________6.38 FORMATTED CAPACITY (17 SECTORS) (MB) _____5.0 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________612 CYLINDERS ________________________________306 HEADS ____________________________________2 DISCS ____________________________________1 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________345 BPI (BITS PER INCH) ______________________9,074 AVERAGE ACCESS (ms) ______________________85 SINGLE TRACK SEEK (ms) ___________________< 16.67 MTBF (power-on hours) ____________________11,000 POWER REQUIREMENTS: +12V START-UP (amps) _3.5 +12V TYPICAL (amps) __1.6 +5V TYPICAL (amps) ___1.1 TYPICAL (watts) ______24.7 MAXIMUM (watts) ______50 BUFFERED STEP PULSE RATE (micro sec) _____5-500 WRITE PRECOMP (cyl) ______________________128 REDUCED WRITE CURRENT (cyl) ______________N/A (307) LANDING ZONE (cyl)________________________319 IBM AT DRIVE TYPE ________________________N/A Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-412 ST412 MFM OPTION SHUNT BLOCK 旼�\컴�/컴� 1 � R � 16 2 � NC � 15 3 � NC � 14 4 � NC � 13 5 � DS4 � 12 6 � DS3 � 11 7 � DS2 � 10 8 � DS1 � 9 읕컴컴컴컴� DS1,DS2,DS3,DS4=DRIVE SELECTED R=RADIAL OPERATION ST - 412 UNFORMATTED CAPACITY (MB) ________________12.76 FORMATTED CAPACITY (17 SECTORS) (MB) _____10.0 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________1,224 CYLINDERS ________________________________306 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________345 BPI (BITS PER INCH) ______________________9,074 AVERAGE ACCESS (ms) ______________________85 SINGLE TRACK SEEK (ms) ___________________< 16.67 MTBF (power-on hours) ____________________11,000 POWER REQUIREMENTS: +12V START-UP (amps) _3.5 +12V TYPICAL (amps) __1.7 +5V TYPICAL (amps) ___1.1 TYPICAL (watts) ______25.9 MAXIMUM (watts) ______50 BUFFERED STEP PULSE RATE (micro sec) _____5-500 WRITE PRECOMP (cyl) ______________________128 REDUCED WRITE CURRENT (cyl) ______________N/A (307) LANDING ZONE (cyl)________________________319 IBM AT DRIVE TYPE ________________________1 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-419 ST412 MFM OPTION SHUNT BLOCK 旼�\컴�/컴� 1 � R � 16 2 � NC � 15 3 � NC � 14 4 � NC � 13 5 � DS4 � 12 6 � DS3 � 11 7 � DS2 � 10 8 � DS1 � 9 읕컴컴컴컴� DS1,DS2,DS3,DS4=DRIVE SELECTED R=RADIAL OPERATION ST - 419 UNFORMATTED CAPACITY (MB) ________________19.14 FORMATTED CAPACITY (32 SECTORS) (MB) _____15.0 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________612 CYLINDERS ________________________________306 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________345 BPI (BITS PER INCH) ______________________9,074 AVERAGE ACCESS (ms) ______________________85 SINGLE TRACK SEEK (ms) ___________________< 16.67 MTBF (power-on hours) ____________________11,000 POWER REQUIREMENTS: +12V START-UP (amps) _3.5 +12V TYPICAL (amps) __1.6 +5V TYPICAL (amps) ___1.1 TYPICAL (watts) ______24.7 MAXIMUM (watts) ______50 BUFFERED STEP PULSE RATE (micro sec) _____5-500 WRITE PRECOMP (cyl) ______________________128 REDUCED WRITE CURRENT (cyl) ______________N/A (307) LANDING ZONE (cyl)________________________319 IBM AT DRIVE TYPE ________________________N/A Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4026 ST412 MFM /�4�3�2�1�\ � O O O O � Power 읕컴컴컴컴� �Data Cable �Controller Cable 1 5 G G 12 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 o o o o 旼1 o o o o � � Drive Select->1 2 3 4 � 쳐 Resistor � � � � � Termination Pack � 읓� 읕� � � � 읕Never Used (Drive Select 3 and 4) 읕컴횵f twisted cable, use Drive Select 2 ST - 4026 UNFORMATTED CAPACITY (MB) ________________25.6 FORMATTED CAPACITY (17 SECTORS) (MB) _____21.4 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________625 BPI (BITS PER INCH) ______________________9,617 AVERAGE ACCESS (ms) ______________________40 SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________15,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.0 +12V TYPICAL (amps) __1.5 +5V TYPICAL (amps) ___1.5 TYPICAL (watts) ______25.5 MAXIMUM (watts) ______55 BUFFERED STEP PULSE RATE (micro sec) _____25-50 WRITE PRECOMP (cyl) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________2 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4038 ST412 MFM /�4�3�2�1�\ � O O O O � Power 읕컴컴컴컴� �Data Cable 1 5 G G 12 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 o o o o o o o o �1 픀ontroller Cable o o o o o o o o 납 Drive Select->1 2 3 4 � � � � 냉� Resistor Termination Pack � � � � � � � 납 � 읓� � � � � 잎 � � � � � � � � � � � � � � � � � � Radial � � � � 읕� Recovery Mode � � � 읕컴� Write Fault � � 읕컴컴� Not Connected � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 4038 UNFORMATTED CAPACITY (MB) ________________38.2 FORMATTED CAPACITY (17 SECTORS) (MB) _____31.9 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________3,665 CYLINDERS ________________________________733 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________750 BPI (BITS PER INCH) ______________________9,617 AVERAGE ACCESS (ms) ______________________40 SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________25,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.0 +12V TYPICAL (amps) __1.5 +5V TYPICAL (amps) ___1.5 TYPICAL (watts) ______25.5 MAXIMUM (watts) ______56 BUFFERED STEP PULSE RATE (micro sec) _____10-70 WRITE PRECOMP (cyl) ______________________300 REDUCED WRITE CURRENT (cyl) ______________N/A (734) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________22, 20 or 8 Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4051 ST412 MFM /�4�3�2�1�\ � O O O O � Power 읕컴컴컴컴� �Data Cable 1 5 G G 12 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 o o o o o o o o �1 픀ontroller Cable o o o o o o o o 납 Drive Select->1 2 3 4 � � � � 냉� Resistor Termination Pack � � � � � � � 납 � 읓� � � � � 잎 � � � � � � � � � � � � � � � � � � Radial � � � � 읕� Recovery Mode � � � 읕컴� Write Fault � � 읕컴컴� Not Connected � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 4051 UNFORMATTED CAPACITY (MB) ________________50.88 FORMATTED CAPACITY (17 SECTORS) (MB) _____42.52 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________4,885 CYLINDERS ________________________________977 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________960 BPI (BITS PER INCH) ______________________9,720 AVERAGE ACCESS (ms) ______________________40 SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________15,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.0 +12V TYPICAL (amps) __1.5 +5V TYPICAL (amps) ___1.5 TYPICAL (watts) ______25.5 MAXIMUM (watts) ______55 BUFFERED STEP PULSE RATE (micro sec) _____10-70 WRITE PRECOMP (cyl) ______________________N/A (978) REDUCED WRITE CURRENT (cyl) ______________N/A (978) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________11 or 17* * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4053 ST412 MFM �12횳횳�5커 � 0 0 0 0 � �Data Cable �Controller Cable 1 \�1�2�3�4�/ 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 o o o o o o o o 1컴컴컴컴컴컴� o o o o o o o o 읕컴컴컴컴컴켸 Drive Select->1 2 3 4 � � � � 픒esistor Termination Pack � � � � � � � � 읓� � � � � � � � � � � Radial � � � � 읕� Recovery Mode � � � 읕컴� Write Fault � � 읕컴컴� Not Connected � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 4053 UNFORMATTED CAPACITY (MB) ________________53.3 FORMATTED CAPACITY (17 SECTORS) (MB) _____44.5 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________5,120 CYLINDERS ________________________________1,024 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________1,031 BPI (BITS PER INCH) ______________________9,792 AVERAGE ACCESS (ms) ______________________28 SINGLE TRACK SEEK (ms) ___________________6 MTBF (power-on hours) ____________________40,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.0 +12V TYPICAL (amps) __1.3 +5V TYPICAL (amps) ___1.3 TYPICAL (watts) ______23 MAXIMUM (watts) ______55 BUFFERED STEP PULSE RATE (micro sec) _____3-70 WRITE PRECOMP (cyl) ______________________N/A (1025) REDUCED WRITE CURRENT (cyl) ______________N/A (1025) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________36 (11 or 17*) * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4085 (94155-86) Wren 2 ST412 MFM Drive Sel 旼컴컴컴컴컴컴� o o o o o � Term 1� o o o o o � 14 pin dip � 旼컴컴컴컴� 읕컴컴컴컴컴컴� � O O O O � Power 1 2 3 4 Radial \컴컴컴컴�/ Command 旼컴컴컴컴컴컴컴�1 12 G G 5 袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴 曲袴袴袴袴袴袴袴袴� Data 旼컴컴컴컴컴컴커1 읕컴컴컴컴컴컴컴� 袴袴袴袴袴曲袴袴袴袴袴袴 曲袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴� 읕컴컴컴컴컴컴켸 ST-4085 94155-85 WREN 2 FH UNFORMATTED CAPACITY (MB) ________________85 FORMATTED CAPACITY (17 SECTORS) (MB) _____71 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________8,192 CYLINDERS ________________________________1,024 HEADS ____________________________________8 DISCS ____________________________________5 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________980 BPI (BITS PER INCH) ______________________9,400 AVERAGE ACCESS (ms) ______________________28 SINGLE TRACK SEEK (ms) ___________________5 MTBF (power-on hours) ____________________40,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.5 +12V TYPICAL (amps) __2.0 +5V START-UP (amps) __1.3 +5V TYPICAL (amps) ___0.75 TYPICAL (watts) ______28 MAXIMUM (watts) ______61 BUFFERED STEP PULSE RATE (micro sec) _____8-200 WRITE PRECOMP (cyl) ______________________N/A (or 128 for the "85P" version) REDUCED WRITE CURRENT (cyl) ______________N/A (1024) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________45, * * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4086 (94155-86) Wren 2 ST412 MFM Drive Sel 旼컴컴컴컴컴컴� o o o o o � Term 1� o o o o o � 14 pin dip � 旼컴컴컴컴� 읕컴컴컴컴컴컴� � O O O O � Power 1 2 3 4 Radial \컴컴컴컴�/ Command 旼컴컴컴컴컴컴컴�1 12 G G 5 袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴 曲袴袴袴袴袴袴袴袴� Data 旼컴컴컴컴컴컴커1 읕컴컴컴컴컴컴컴� 袴袴袴袴袴曲袴袴袴袴袴袴 曲袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴� 읕컴컴컴컴컴컴켸 ST-4086 94155-86 WREN 2 FH UNFORMATTED CAPACITY (MB) ________________86 FORMATTED CAPACITY (17 SECTORS) (MB) _____72 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________8,325 CYLINDERS ________________________________925 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________960 BPI (BITS PER INCH) ______________________9,274 AVERAGE ACCESS (ms) ______________________28 SINGLE TRACK SEEK (ms) ___________________5 MTBF (power-on hours) ____________________40,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.5 +12V TYPICAL (amps) __2.0 +5V START-UP (amps) __1.3 +5V TYPICAL (amps) ___0.75 TYPICAL (watts) ______28 MAXIMUM (watts) ______61 BUFFERED STEP PULSE RATE (micro sec) _____8-200 WRITE PRECOMP (cyl) ______________________N/A (926) REDUCED WRITE CURRENT (cyl) ______________N/A (926) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________46, * * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4096 ST412 MFM �12횳횳�5커 � 0 0 0 0 � �Data Cable �Controller Cable 1 \�1�2�3�4�/ 袴袴袴袴� 袴 袴袴袴袴袴袴袴袴袴袴 袴� 袴袴袴袴袴袴 o o o o o o o o 1컴컴컴컴컴컴� o o o o o o o o 읕컴컴컴컴컴켸 Drive Select->1 2 3 4 � � � � 픒esistor Termination Pack � � � � � � � � 읓� � � � � � � � � � � Radial � � � � 읕� Recovery Mode � � � 읕컴� Write Fault � � 읕컴컴� Not Connected � 읕컴컴컴컴 Never Used (Drive Select 3 and 4) � If twisted cable, use Drive Select 2 ST - 4096 UNFORMATTED CAPACITY (MB) ________________96.0 FORMATTED CAPACITY (17 SECTORS) (MB) _____80.2 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________9,216 CYLINDERS ________________________________1,024 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________156,672 TPI (TRACKS PER INCH) ____________________1,031 BPI (BITS PER INCH) ______________________9,792 AVERAGE ACCESS (ms) ______________________28 SINGLE TRACK SEEK (ms) ___________________6 MAX FULL SEEK (ms) _______________________55 MTBF (power-on hours) ____________________40,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.0 +12V TYPICAL (amps) __1.3** +5V TYPICAL (amps) ___1.3 TYPICAL (watts) ______23** MAXIMUM (watts) ______55 BUFFERED STEP PULSE RATE (micro sec) _____3-70 WRITE PRECOMP (cyl) ______________________N/A (1025) REDUCED WRITE CURRENT (cyl) ______________N/A (1025) LANDING ZONE (cyl)________________________AUTO PARK IBM AT DRIVE TYPE ________________________35 or 12* * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. **1.5 amps/25 watts FOR 2-BOARD ST-4096 ONLY Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-4097 (94155-96) Wren 2 ST412 MFM Drive Sel 旼컴컴컴컴컴컴� o o o o o � Term 1� o o o o o � 14 pin dip � 旼컴컴컴컴� 읕컴컴컴컴컴컴� � O O O O � Power 1 2 3 4 Radial \컴컴컴컴�/ Command 旼컴컴컴컴컴컴컴�1 12 G G 5 袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴妄袴袴袴袴袴袴 曲袴袴袴袴袴袴袴袴� Data 旼컴컴컴컴컴컴커1 읕컴컴컴컴컴컴컴� 袴袴袴袴袴曲袴袴袴袴袴袴 曲袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴� 읕컴컴컴컴컴컴켸 ST-4097 94155-96 WREN 2 FH UNFORMATTED CAPACITY (MB) ________________96 FORMATTED CAPACITY (17 SECTORS) (MB) _____80 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________9,216 CYLINDERS ________________________________1,024 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________980 BPI (BITS PER INCH) ______________________9,400 AVERAGE ACCESS (ms) ______________________28 SINGLE TRACK SEEK (ms) ___________________5 MTBF (power-on hours) ____________________40,000 POWER REQUIREMENTS: +12V START-UP (amps) _4.5 +12V TYPICAL (amps) __2.0 +5V START-UP (amps) __1.3 +5V TYPICAL (amps) ___0.75 TYPICAL (watts) ______28 MAXIMUM (watts) ______61 BUFFERED STEP PULSE RATE (micro sec) _____8-200 WRITE PRECOMP (cyl) ______________________N/A (or 128 for the "97P" version) REDUCED WRITE CURRENT (cyl) ______________N/A (1024) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________35 * * MAY REQUIRE A CONTROLLER WITH BIOS SUPPORT, OR FORMATTING AND PARTITIONING SOFTWARE. ALSO, CHECK TO SEE IF YOUR CMOS SETUP HAS A "CUSTOM" OR "USER DEFINABLE" DRIVE TYPE AVAILABLE. Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)  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 1991 ST-506 ST506 MFM UNFORMATTED CAPACITY (MB) ________________6.38 FORMATTED CAPACITY (17 SECTORS) (MB) _____5.0 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________612 CYLINDERS ________________________________153 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________MFM TRANSFER RATE (mbits/sec) ________________5.0 INTERFACE ________________________________ST506 TPI (TRACKS PER INCH) ____________________255 BPI (BITS PER INCH) ______________________7,690 AVERAGE ACCESS (ms) ______________________85 SINGLE TRACK SEEK (ms) ___________________3 MTBF (power-on hours) ____________________11,000 POWER REQUIREMENTS: +12V START-UP (amps) _3.5 +12V TYPICAL (amps) __1.6 +5V TYPICAL (amps) ___0.7 TYPICAL (watts) ______22.7 MAXIMUM (watts) ______47 BUFFERED STEP PULSE RATE (micro sec) _____3 ms ONLY WRITE PRECOMP (cyl) ______________________128 REDUCED WRITE CURRENT (cyl) ______________128 LANDING ZONE (cyl)________________________157 IBM AT DRIVE TYPE ________________________N/A Seagate reserves the right to change, without notice, product offerings or specifications. (6/26/90)