S T 4 2 3 4 5 1 F C E L I T E 2 3 SEAGATE
NO MORE PRODUCED Native| Translation
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Form 5.25"/FH Cylinders 6884| | |
Capacity form/unform 23400/ MB Heads 28| | |
Seek time / track 13.0/ 1.5 ms Sector/track | | |
Controller FIBRE CHANNEL DUAL Precompensation
Cache/Buffer 2048 KB MULTI-SEGMEN Landing Zone
Data transfer rate 12.000 MB/S int Bytes/Sector 512
100.000 MB/S ext
Recording method PRML 0/4/4 operating | non-operating
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Supply voltage Temperature *C 5 50 |
Power: sleep W Humidity % |
standby W Altitude km |
idle 22.0 W Shock g |
seek 27.0 W Rotation RPM 5400
read/write W Acoustic dBA
spin-up W ECC Bit
MTBF h 800000
Warranty Month 60
Lift/Lock/Park YES Certificates
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I N S T A L L
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SEAGATE ST423451N/W/WD INSTALLATION GUIDE 83329130 REV. A
Notes on Installation
=====================
Installation direction
----------------------
horizontally vertically
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+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
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+---------------------+ | +-----+ +-----+ |
+-+-----------------+-+ +--+ +--+
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+-----------------+
The drive will operate in all axis (6 directions).
Orientation
-----------
We recommend orienting the drive or directing the air flow in a way
that creates the least amount of air-flow resistance while providing
air flow above the circuit boards and around the head and disc
assembly (HDA). Also, choose the shortest possible path between the
air inlet and exit. This minimizes the distance traveled by air that
is heated by the drive and by other nearby heat sources.
The air-flow patterns can be created by the fans either pushing or
drawing air. The overall flow pattern can be directed from front to
back, back to front, or side to side.
Mounting the drive and connecting cables
----------------------------------------
Do not touch the connector pins or any components on the control
board without observing static-discharge precautions.
Always handle the drive by the frame only.
The drive may be mounted in any orientation (horizontally,
vertically, and any combination thereof); however, you must ensure
that the drive receives adequate air flow for cooling.
1. Mount the drive to the host system's chassis using four 6-32 UNC
screws. Two mounting holes are in each side of the HDA and there
are four mounting holes in the bottom of the HDA. The maximum
length that the screws should extend into the HDA mounting holes
is 0.17 inch (4.318 mm), measured from the outer surface of the
HDA. Tighten the screws down evenly. Do not over-tighten or force
the screw if it does not seem to screw in easily, because this
means the threads are not properly aligned. In this case, back the
screw out and try again.
2. Verify that all connections between the drive and the host system
are correctly installed.
3. Verify that you have correctly installed jumpers.
4. Connect the SCSI cable into the drive's SCSI connector. Take care
not to stretch or crimp this cable, and do not block the system's
cooling air flow with the cable. The drive receives DC power
through a 4-pin connector mounted next to the SCSI connector. The
output of a power supply must meet SELV (safety extra low voltage)
as defined in IEC 950. To connect the DC power cable to the drive,
simply insert the cable end into the drive's DC power connector.
Note. Signal ground on the printed circuit board assembly (PCB) and
the head and disc assembly (HDA) are connected together in
this drive and you cannot separate them. Ensure the equipment
in which you have mounted the drive is connected directly to
the HDA. Maximizing the conductive contact area between HDA
ground and system ground may reduce radiated emissions.
If you do not want the system chassis to be connected to the HDA/PCB
ground, you must provide a nonconductive (electrically isolating)
method of mounting the drive in the host system. This may increase
radiated emissions and is the system designer's responsibility.
5. Replace the host system's cover.
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G E N E R A L
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NEVER
Announced but never produced.
NEVER PRODUCED!!!