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-42000N Elite 2 Fast SCSI-2 旼 This T-RES only on Differential model � (see below for T-RES descriptions) Spindle Sync � � 旼 Terminator Power Source (see below)컴� �4컴1컴� 旼�*컴�1 4o쿽3 旼컴컴�1 � p쿽 oo A 읕냐컴켸 2o o1 읕캐컴켸 � o o o o o n쿽 oo B 픖erminator DIPS� Power o o o o � o o o o o 읕컴컴켸郞袴袴袴袴袴袴袴袴袴袴袴袴� �12횳횳�5커 o o o o � 曲曲曲曲曲袴P�W�A袴孤::::::::::::::::::::::::1팠孤 0 0 0 0 팠妄妄妄妄� � 4 2 1 � � 突袴袴袴袴袴袴袴袴袴袴袴袴� \컴컴컴컴�/ � � � � � 컴쩡� � � SCSI Cable Connector � � � � � � � � � � � � � � � 읕� Master off/Slave on - Spindle Sync � � � � � � 읕컴� Write Protect option enable � � � � � 읕컴컴컴� SCSI ID � � � � � Spinup Delay (10 secs * ID) 켸 � � � � Motor Start option enable 컴켸 � � � Parity check DISable 컴컴켸 � � Sweep Cycle enable 컴컴컴켸 � � 郞袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴袴拷 � � Terminator Power Source Options 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 쳐컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커 � 2 & 4 � Initiator 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. � � 1 & 3 � � AND � Drive supplies power fpr external terminator at end of the � � 2 & 4 daisy chain. Terminator resistor-paks must be removed. � � This option is recommended only for last drive on daisy � � chain. � 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸 T-RES descriptions: ST42000N 2 SIPs ST42000ND 2 DIPs ST-42000N Elite 2 UNFORMATTED CAPACITY _____________________2,106,263,040 FORMATTED CAPACITY (512 byte blk) ________1,792,111,616 AVERAGE SECTORS PER TRACK ________________83 ACTUATOR TYPE ____________________________STRAIGHT ARM TRACKS ___________________________________41,984 CYLINDERS ________________________________2,627/2,624 (user) HEADS ____________________________________16 DISCS (5.25 in) __________________________9 MEDIA TYPE _______________________________THIN FILM HEAD TYPE ________________________________THIN FILM RECORDING METHOD _________________________ZBR RLL (2,7) INTERNAL TRANSFER RATE (mbits/sec) _______30-40 EXTERNAL TRANSFER RATE (mbyte/sec) _______10 (burst) SPINDLE SPEED (RPM) ______________________5,400 AVERAGE LATENCY (mSEC) ___________________5.55 COMMAND OVERHEAD (mSEC) __________________<0.5 BUFFER ___________________________________256 Kbyte Read Look-Ahead, Adaptive, Multi-Segmented Cache INTERFACE ________________________________SCSI-2 FAST BYTES PER TRACK __________________________42,000-55,440 SECTORS PER DRIVE ________________________3,500,218 BYTES PER CYLINDER _______________________672,000-887,040 TPI (TRACKS PER INCH) ____________________2,250 BPI (BITS PER INCH) ______________________41,713 AVERAGE ACCESS (ms) ______________________11 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 REQUIREMENTS: Single ended/Differential +12V START-UP (amps) _4.6/4.6 +12V TYPICAL (amps) __2.0/2.0 +5V START-UP (amps) __2.3/2.6 +5V TYPICAL (amps) ___2.3/2.6 TYPICAL (watts) ______29.9/31.8 MAXIMUM (watts) ______33.7/36.6 WRITE PRECOMP (cyl) ______________________N/A REDUCED WRITE CURRENT (cyl) ______________N/A LANDING ZONE (cyl) _______________________Auto USER MANUAL PART NUMBER __________________ OTHER ____________________________________ Synchronized Spindles, Sweep Cycle Capability 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): 8.0/203 Weight (lbs/kg): 7.8/3.6 Seagate reserves the right to change, without notice, product offerings or specifications. (12/14/92)