SEAGATE TECHNOLOGY, INC.
Customer Technical Support FAX Network +1 408 438-8137
Customer Technical Support Bulletin Boards (300-9600, 8-N-1)
/----------------------------------+---------------------------------\
| United States +1 408 438-8771 | United Kingdom +44 628 478011 |
+----------------------------------+---------------------------------|
| 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. |
\----------------------------------------------------------------------/
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)