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SEAGATE TECHNOLOGY, INC.
Customer Technical Support FAX Network +1 408 438-8137
Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
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? United States +1 408 438-8771 ? United Kingdom +44 628 478011 ?
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? Germany +49 89 140-9331 ? Singapore +65 227-2217 ?
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(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)???
?4??1??? ???*???1 4o?o3 ???????1 ?
p?o oo A ???????? 2o o1 ???????? ?
o o o o o n?o oo B ?Terminator DIPS? Power o o o o ?
o o o o o ??????????????????????????????????? ?12?G?G?5?? 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 ??????????????????????????????????????????
????????????????????????????????????????????????????????????????????????
? 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. ?
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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