|
| |
ST-3283N
Rear View +- 50 pin SCSI Interface I/O connector
|
| DC power
(top)+-------------------------+ /-5-G-G-12\
----+::::::::::::::::::::::::1+-+ 0 0 0 0 +-
(bottom)+-------------------------+ +---------+
+-----1 +-----1 +-----1
+-----+ +-----+ +-----+
Terminating Resistor Packs
ST-3283N
Left View
(top) +-+
Front....----------------------------+ I/O connector
o o o +-+
SCSI ID Address o o o
| | |
ID 1 -+ | |
ID 2 ---+ |
ID 4 -----+
ST-3283N
Right View
+-+ 1o o o
DC Power +----------- o|o o6--------------------------------
+-+ 1o o --+---- o o
o|o4 Active/Passive Termination o o
--+-- --+---- | |
Terminator Power +---+----------------------------+ | + Remote Start
--+-- | Active: Pins 1 & 2 shorted | +-- Parity Enable
| | only (+2.85V to |
| | 110 ê) for FAST |
| | SCSI; default |
| |Passive: Pins 2 & 4 shorted |
| | AND pins 5 & 6 shorted |
| | (+5V and GND to |
| | 220/330 ê) for |
| | standard SCSI. |
| +--------------------------------+
|
|
+-------------+--------------------------------------------------------+
|Terminator Power: From SCSI Connector ---------------- Pins 1 & 2 |
| From Power Connector --------------- Pins 1 & 3 |
| To SCSI Connector Only ------------- Pins 3 & 4 |
| From Power Connector and ----------- Pins 1 & 2 AND |
| to SCSI Bus (default) ----------------- 3 & 4 |
| Terminating Resistors not Installed - Pins 2 & 4 |
+----------------------------------------------------------------------+
ST-3283N
Front View Clock Ground -+ +- (Pin 3 removed for key)
| |
(top) -o o o o o + o1
-------------------------+o o o o o o o -----
(bottom) | | | +-+---+
| | | |
Remote LED -----+ | | |
Reserved -------+ | |
Ext. Spindle Clock Synch ---------+ |
Reserved + |
Reserved +------------+
Reserved |
Reserved +
ST-3283N
UNFORMATTED CAPACITY _____________________
FORMATTED CAPACITY (xx SECTORS) __________248.62
AVERAGE SECTORS PER TRACK ________________57 rounded down
ACTUATOR TYPE ____________________________STRAIGHT ARM
TRACKS ___________________________________8,455
CYLINDERS ________________________________1,691 (user)
HEADS ____________________________________5
DISCS (3.5 in) ___________________________3
MEDIA TYPE _______________________________THIN FILM
HEAD TYPE ________________________________THIN FILM
RECORDING METHOD _________________________ZBR RLL (1,7)
INTERNAL TRANSFER RATE (mbits/sec) _______15.0 to 24.4
SPINDLE SPEED (RPM) ______________________4,500
AVERAGE LATENCY (mSEC) ___________________6.67
BUFFER ___________________________________128 Kbyte SeaCache
INTERFACE ________________________________SCSI-2 Fast
BYTES PER TRACK __________________________
SECTORS PER DRIVE ________________________485,601
TPI (TRACKS PER INCH) ____________________1,960
BPI (BITS PER INCH) ______________________38,000
AREAL DENSITY (MBits/sq in) ______________
AVERAGE ACCESS (ms) ______________________12
SINGLE TRACK SEEK (ms) ___________________<4
MAX FULL SEEK (ms) _______________________35
MTBF (power-on hours) Office _____________200,000
POWER REQUIREMENTS: +12V START-UP (amps) _1.5
+5V TYPICAL (amps) ___0.55
POWER MANAGEMENT (Watts):
ACTIVE _______________5.7
IDLE _________________3.5
STANDBY ______________1.0
SLEEP ________________
WRITE PRECOMP (cyl) ______________________N/A
REDUCED WRITE CURRENT (cyl) ______________N/A
LANDING ZONE (cyl) _______________________AUTO
IBM AT DRIVE TYPE ________________________0
Physical:
Height (inches/mm): 1.00/25.4
Width (inches/mm): 4.02/102.1
Depth (inches/mm): 5.77/146.6
Weight (lbs/kg): 1.5/0.68
Note: If FAST SCSI transfer rates are used, then the active
termination options must be used. If the transfer rates are 5.0
MBytes/sec and below, either method of termination can be used.
Although active and passive terminated devices can be installed on the
same bus, both ends of the cable should be terminated in the same
manner, either both active or both passive.
Note: If your application requires no terminators, remove the
terminators from the circuit board. Merely removing the terminator
power source selection jumper does not disconnect the terminator
resistors from the circuit.
ZBR = Zone Bit Recording = Variable sectors per track
Seagate reserves the right to change, without notice, product
offerings or specifications. (10/23/91) |