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 1991 ST-42000N Elite 2 Fast SCSI-2 �� This T-RES only on Differential model � (see below for T-RES descriptions) Spindle Sync � � �� Terminator Power Source (see below)�Ŀ �4��1�Ŀ ���*���1 4o�o3 �������1 � p�o oo A �ij����� 2o o1 ��ij���� � o o o o o n�o oo B �Terminator DIPS� Power o o o o � o o o o o ���������������������������������͸ �12�G�G�5Ŀ o o o o � ������������P�W�A��͵::::::::::::::::::::::::1��͵ 0 0 0 0 ����������� � 4 2 1 � � �������������������������; \���������/ � � � � � ����� � � SCSI Cable Connector � � � � � � � � � � � � � � � ��� Master off/Slave on - Spindle Sync � � � � � � ����� Write Protect option enable � � � � � ��������� SCSI ID � � � � � Spinup Delay (10 secs * ID) �� � � � � Motor Start option enable ���� � � � Parity check DISable ������ � � Sweep Cycle enable �������� � � ����������������������������������͸ � � Terminator Power Source Options ������������������������������������������ ����������������������������������������������������������������������Ŀ � 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. � ������������������������������������������������������������������������ 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 ____________________________ROTARY VOICE COIL 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)