---------------------------------------------------------------------- Contents: 10/12/1992 11:28 3,482 ST1106R.TXT 12/07/1991 17:40 4,328 ST1150R.TXT 11/11/1992 12:17 3,783 ST138R.TXT 11/11/1992 12:18 3,611 ST157R.TXT 12/07/1991 17:40 3,298 ST225R.TXT 30/10/1991 12:10 3,385 ST238R.TXT 12/07/1991 17:40 3,141 ST250R.TXT 30/10/1991 12:11 3,440 ST277R.TXT 12/07/1991 17:41 3,416 ST278R.TXT 12/07/1991 17:41 3,022 ST279R.TXT 12/07/1991 17:41 3,132 ST4135R.TXT 30/10/1991 12:12 3,445 ST4144R.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-138R ST412 RLL /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 - 138R UNFORMATTED CAPACITY (MB) ________________38.4 FORMATTED CAPACITY (26 SECTORS) (MB) _____32.7 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL (2,7) TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________63,960 TPI (TRACKS PER INCH) ____________________824 BPI (BITS PER INCH) ______________________22,430 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 ________________________** *ST138R-0/ST138R-1 ** 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-157R ST412 RLL /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 - 157R UNFORMATTED CAPACITY (MB) ________________57.7 FORMATTED CAPACITY (26 SECTORS) (MB) _____49.1 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________3,690 CYLINDERS ________________________________615 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________824 BPI (BITS PER INCH) ______________________22,430 AVERAGE ACCESS (ms)*______________________40/28 SINGLE TRACK SEEK (ms) ___________________8 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 ________________________** *ST157R-0/ST157R-1 * 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-225R ST412 RLL /�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 - 225R UNFORMATTED CAPACITY (MB) ________________25.0 FORMATTED CAPACITY (31 SECTORS) (MB) _____21.2 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________1,334 CYLINDERS ________________________________667 HEADS ____________________________________2 DISCS ____________________________________1 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,000 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________588 BPI (BITS PER INCH) ______________________18,897 AVERAGE ACCESS (ms) ______________________70 SINGLE TRACK SEEK (ms) ___________________20 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) ______________________N/A (668) REDUCED WRITE CURRENT (cyl) ______________N/A (668) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________* *MUST BE USED WITH THE ST11R CONTROLLER OR 16-BIT CONTROLLER * 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-238R ST412 RLL /�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 - 238R UNFORMATTED CAPACITY (MB) ________________38.4 FORMATTED CAPACITY (26 SECTORS) (MB) _____32.7 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,460 CYLINDERS ________________________________615 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________RLL (2,7) TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________63,960 TPI (TRACKS PER INCH) ____________________588 BPI (BITS PER INCH) ______________________14,740 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) ______________________N/A (616) REDUCED WRITE CURRENT (cyl) ______________N/A (616) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________* * 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-250R ST412 RLL /�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 - 250R UNFORMATTED CAPACITY (MB) ________________50.0 FORMATTED CAPACITY (31 SECTORS) (MB) _____42.3 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________2,668 CYLINDERS ________________________________667 HEADS ____________________________________4 DISCS ____________________________________2 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,000 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________588 BPI (BITS PER INCH) ______________________18,897 AVERAGE ACCESS (ms) ______________________70 SINGLE TRACK SEEK (ms) ___________________20 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) ______________________N/A (668) REDUCED WRITE CURRENT (cyl) ______________N/A (668) LANDING ZONE (cyl)________________________670 IBM AT DRIVE TYPE ________________________N/A* *MUST BE USED WITH THE ST11R CONTROLLER OR 16-BIT CONTROLLER; 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-277R ST412 RLL /�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 - 277R UNFORMATTED CAPACITY (MB) ________________76.9 FORMATTED CAPACITY (26 SECTORS) (MB) _____65.5 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________4,920 CYLINDERS ________________________________820 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL (2,7) TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________127,920 TPI (TRACKS PER INCH) ____________________777 BPI (BITS PER INCH) ______________________14,902 AVERAGE ACCESS (ms)*______________________40/28 SINGLE TRACK SEEK (ms) ___________________8 MAX FULL SEEK (ms) _______________________ /70 MTBF (power-on hours) ____________________70,000 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 _______________________** *ST277R-0/ST277R-1 * 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-278R ST412 RLL (same as ST-277R with Terminator that cannot be removed, therefore 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 - 278R UNFORMATTED CAPACITY (MB) ________________76.9 FORMATTED CAPACITY (26 SECTORS) (MB) _____65.5 ACTUATOR TYPE ____________________________STEPPER TRACKS ___________________________________4,920 CYLINDERS ________________________________820 HEADS ____________________________________6 DISCS ____________________________________3 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________777 BPI (BITS PER INCH) ______________________14,902 AVERAGE ACCESS (ms)*______________________40/28 SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________70,000 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 _______________________** *ST277R-0/ST277R-1 * 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-279R (94205-77) Wren 2 HH ST412 RLL 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 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-279R 94205-77 WREN 2 HH UNFORMATTED CAPACITY (MB) ________________77 FORMATTED CAPACITY (26 SECTORS) (MB) _____65 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________4,945 CYLINDERS ________________________________989 HEADS ____________________________________5 DISCS ____________________________________3 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________960 BPI (BITS PER INCH) ______________________14,302 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 ________________________* * 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-1106R ST412 RLL /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-1106R UNFORMATTED CAPACITY (MB) ________________106.6 FORMATTED CAPACITY (26 SECTORS) (MB) _____91 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________3,908 CYLINDERS ________________________________977 HEADS ____________________________________7 DISCS ____________________________________4 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________1,900 BPI (BITS PER INCH) ______________________21,162 AVERAGE ACCESS (ms) ______________________24 SINGLE TRACK SEEK (ms) ___________________8 MTBF (power-on hours) ____________________50,000 POWER REQUIREMENTS: +12V START-UP (amps) _2.0 +12V TYPICAL (amps) __0.45 +5V START-UP (amps) __ +5V TYPICAL (amps) ___0.5 TYPICAL (watts) ______8 MAXIMUM (watts) ______ BUFFERED STEP PULSE RATE (micro sec) _____ WRITE PRECOMP (cyl) ______________________N/A (978) REDUCED WRITE CURRENT (cyl) ______________N/A (978) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________* * 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-1150R (94355-150) Swift ST412 RLL 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-1150R 94355-150 Swift UNFORMATTED CAPACITY (MB) ________________150 FORMATTED CAPACITY (26 SECTORS) (MB) _____128 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________9,648 CYLINDERS ________________________________1,072 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________1,350 BPI (BITS PER INCH) ______________________21,030 AVERAGE ACCESS (ms) ______________________15 SINGLE TRACK SEEK (ms) ___________________4 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) ______________________300 REDUCED WRITE CURRENT (cyl) ______________N/A (1073) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________* * 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. 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-4135R (94155-135) Wren 2 ST412 RLL 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-4135R 94155-135 WREN 2 FH UNFORMATTED CAPACITY (MB) ________________135 FORMATTED CAPACITY (26 SECTORS) (MB) _____115 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________8,640 CYLINDERS ________________________________960 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________OXIDE RECORDING METHOD _________________________RLL TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 INTERFACE ________________________________ST412 TPI (TRACKS PER INCH) ____________________980 BPI (BITS PER INCH) ______________________13,670 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) ______________________128 REDUCED WRITE CURRENT (cyl) ______________N/A (961) LANDING ZONE (cyl) _______________________AUTO PARK IBM AT DRIVE TYPE ________________________* * 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-4144R ST412 RLL �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 - 4144R UNFORMATTED CAPACITY (MB) ________________144.0 FORMATTED CAPACITY (26 SECTORS) (MB) _____122.7 ACTUATOR TYPE ____________________________VOICE COIL TRACKS ___________________________________9,216 CYLINDERS ________________________________1,024 HEADS ____________________________________9 DISCS ____________________________________5 MEDIA TYPE _______________________________THIN FILM RECORDING METHOD _________________________RLL (2,7) TRANSFER RATE (mbits/sec) ________________7.5 SPINDLE SPEED (RPM) ______________________3,600 AVERAGE LATENCY (mSEC) ___________________8.3 INTERFACE ________________________________ST412 SECTORS PER DRIVE ________________________239,616 TPI (TRACKS PER INCH) ____________________1,031 BPI (BITS PER INCH) ______________________14,688 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 ________________________* * 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)