Hard Drive: FUJITSU: M2909QAM 3100MB 3.5"/HH SCSI2 WIDE
M 2 9 0 9 Q A M FUJITSU
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/HH Cylinders 3150| | |
Capacity form/unform 3100/ MB Heads 19| | |
Seek time / track 10.0/ 1.5 ms Sector/track | | |
Controller SCSI2 SI/WI/FAST Precompensation
Cache/Buffer 512 KB Landing Zone
Data transfer rate 4.700 MB/S int Bytes/Sector 512
10.000 MB/S ext SYNC
Recording method RLL 8/9 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 50 | -40 60
Power: sleep W Humidity % 20 80 | 5 95
standby W Altitude km -0.300 3.000| -0.300 12.000
idle W Shock g 5 | 50
seek W Rotation RPM 5400
read/write W Acoustic dBA 43
spin-up W ECC Bit
MTBF h 500000
Warranty Month
Lift/Lock/Park YES Certificates
Layout
FUJITSU M2909Q/2903Q/2915Q JUMPER SETTING
+------------------------------++-------------------------+ | +--++++ CN6xxx |XXI | | +CN9 XXCN10 |XXN | +----------+ | + | |XXT | | | | + | |XXE | | | | + | CN7+-+ |XXR | | | CN25+ | | | |XXF | | | | + | +-+ |XXA | +----------+ +--+-++ |XXC | +--++-+ CN4+-+ |XXE | | +CN8 | | |XX | | + | +-+ |XX | +-+CN20 | + | | | +-+ CN24+ | | | | + | | | | + | |XX Power | +--+-++ |XX +--------------------------------++-----------------------+
Jumpers
FUJITSU M2903RA/Q/M2909RA/Q/M2915RA/Q JUMPER SETTING
Jumper Setting
==============
* = Factory default
Terminal Connector CN4 SCSI ID ------------------------------ +----------+-------------------------------+ | SCSI ID | Jumper Location | +2-4-6-8+ | | PINS | |* * * *| | | ID4 | ID2 | ID1 | ID0 | |* * * *|CN4 +----------+-------+-------+-------+-------+ +1-3-5-7+ | 0 | OPEN | OPEN | OPEN | OPEN | +----------+-------+-------+-------+-------+ | 1 | OPEN | OPEN | OPEN | CLOSED| +----------+-------+-------+-------+-------+ | 2 | OPEN | OPEN | CLOSED| OPEN | +----------+-------+-------+-------+-------+ | 3 | OPEN | OPEN | CLOSED| CLOSED| +----------+-------+-------+-------+-------+ | 4 | OPEN | CLOSED| OPEN | OPEN | +----------+-------+-------+-------+-------+ | 5 | OPEN | CLOSED| OPEN | CLOSED| +----------+-------+-------+-------+-------+ | 6 | OPEN | CLOSED| CLOSED| OPEN | +----------+-------+-------+-------+-------+ | 7 | OPEN | CLOSED| CLOSED| CLOSED| +----------+-------+-------+-------+-------+ | 8 | CLOSED| OPEN | OPEN | OPEN | +----------+-------+-------+-------+-------+ | 9 | CLOSED| OPEN | OPEN | CLOSED| +----------+-------+-------+-------+-------+ | 10 | CLOSED| OPEN | CLOSED| OPEN | +----------+-------+-------+-------+-------+ | 11 | CLOSED| OPEN | CLOSED| CLOSED| +----------+-------+-------+-------+-------+ | 12 | CLOSED| CLOSED| OPEN | OPEN | +----------+-------+-------+-------+-------+ | 13 | CLOSED|CLOSED | OPEN | CLOSED| +----------+-------+-------+-------+-------+ | 14 | CLOSED| CLOSED| CLOSED| OPEN | +----------+-------+-------+-------+-------+ | 15 | CLOSED| CLOSED| CLOSED| CLOSED| +----------+-------+-------+-------+-------+
Set the SCSI ID so that there are no duplications between SCSI
devices on the SCSI bus.
The priority of SCSI bus use in ARBITRATION phase is determined by
SCSI ID as follows:
7>6>5>4>3>2>1>0>15>14>13>12>11>10>9>8
Terminal Connector CN6 ---------------------- +6-4-2+ |* * *| |* * *| CN6 +5-3-1+ D P A
Spindle motor control
A SHORT* Auto Start on power up
OPEN Controlled by START/STOP UNIT command
Set how to control the starting HDD spindle motor. This setting only
determines the operation mode when the power supply is turned on or
the microcode is downloaded.
In both modes, stopping or restating the spindle motor can be
controlled by specifying the START/STOP UNIT command.
SCSI Bus Parity checking
------------------------
P SHORT* Enabled
OPEN Disabled
Offline Self-diagnostics
------------------------
D SHORT* Diagnostic Mode
OPEN Normal Operation
Setting terminals CN5-6 are used to set starting/stopping the HDD
self-diagnostics. The offline self-diagnostics can test the normality
of the HDD controller function and the basic read/write operation,
the setting terminals must be open.
Terminal Connector CN7
----------------------
Spindle Sync I/O pulse. Master & Slave control determining whether to
receive or transmit SPSYNC are set by MODE SELECT command. This
terminal
SY Pin 1 GROUND
Pin 2 SPSYNC
External Reset. This would normally be connected to a momentary
switch which would short pin 3 to ground for the reset of the drive
and SCSI bus. Normally used for debug purposes only.
R SHORT* External reset signal when connected to ground
OPEN No connection
CN7 Pins 5-6 Write protection
-----------------------------
WP SHORT Write operation is disabled
OPEN* Write operation is enabled
CN7 Pins7-8 Termination of SCSI bus (Single-Ended type, 8-bit)
--------------------------------------------------------------
TM SHORT* Enable terminating resistor
OPEN Disable terminating resistor
Setting terminal CN7 7-8 set whether to use the terminating resistor
circuit on the SCSI interface provided for the HDD. The setting
terminals enable the terminating resistor circuit to be connected on
the SCSI interface. Only the HDD of the single-ended type is
provided with the terminating resistor circuit.
CN7 Pins7-8 Termination of SCSI bus (Differential type, 16-bit)
---------------------------------------------------------------
7-8 SHORT* 16-bit SCSI mode setting
OPEN 8-bit SCSI mode setting
Set setting terminal CN7 7-8 enable or disable the 16-bit SCSI mode.
When the 16-bit SCSI mode is enabled, all data bus (DB00 to DB15,
DBP0 to DBP1) can be effective. When the Differential type 16-bit
SCSI HDD is used as 8-bit SCSI device, this setting must be open.
Terminal Connector CN20 External LED connector
----------------------------------------------
Pin 1 LED(V)
Pin 2 -LED
CN10 Single-Ended 16-bit ------------------------ +4-2+ |* *| |* *| CN10 +3-1+
Setting terminals CN10 1-2 and 3-4 set whether to use the terminating
resistor circuit on the SCSI interface provided for the HDD.
The setting terminals enable the terminating resistor circuit to be
connected on the SCSI interface.
CAUTION
This setting is effective when the external operator panel (S6) is
connected and pin A9 (TERM-ON) is open.
+-------+-------+---------------------------------------------------+ |Pins | Pins |Connection of the terminating resistor on the SCSI | |1-2 | 3-4 |Interface | +-------+-------+---------------------------------------------------+ |OPEN | OPEN |Terminating resistor circuit is not connected | +-------+-------+---------------------------------------------------+ |CLOSED | CLOSED|Terminating resistor circuit is connected | +-------+-------+---------------------------------------------------+
CN10 Setting connecting of terminating resistor on SCSI interface ----------------------------------------------------------------- (Single-ended type 16-bit SCSI is used as 8-bit SCSI) +-------+-------+---------------------------------------------------+ |Pins | Pins |Connection of the terminating resistor on the SCSI | |1-2 | 3-4 |Interface | +-------+-------+---------------------------------------------------+ |OPEN | CLOSED|Terminating resistor circuit is not connected | +-------+-------+---------------------------------------------------+ |CLOSED | CLOSED|Terminating resistor circuit is connected | +-------+-------+---------------------------------------------------+
Install
FUJITSU INSTALLATION CONDITIONS SCSI
Mounting in Cabinet
-------------------
Note the following points regarding mounting of the HDD in a cabinet.
If circumstances prevent the HDD from being mounted as explained
below, contact to distributers, reseller, or our sales offices.
- Mount the HDD in the specified orientation.
Mounting the HDD in an orientaion other than the specified one may
adversely affect the temperature or may cause unexpected mechanical
stress to the HDD. This may lead to a failure to guarantee the
reliability level stated in the device specifications.
- Use the specified mounting screw holes.
Mount the HDD using the mounting screw holes for each model.
If the HDD is attached by a means other than screws or with screws
but not at all specified locations (four locations), unexpected
vibration or shock may be applied to the HDD or the HDD may
mechanically resonate. This may lead to a failure to guarantee the
vibration and shock resistance levels stated in the device
specifications.
- Use mounting screws of appropriate length.
A screw shorter than appropriate length is likely to loosen, causing
the HDD to drop off the cabinet.
A screw longer than appropriate length may touch the HDD body,
causing external vibration or shock to the HDD body. This may lead to
a failure to guarantee the vibration and shock resistance levels
stated in the device specifications.
- Ensure clearance between the HDD and the cabinet.
Be sure that there is a minimum 2.5 mm clearance between the HDD and
the cabinet. Failure to do so may block ventilation and adversely
affect the operating temperature of the HDD. It may also cause the
HDD to touch the cabinet, which may then induce electrical noise or
transmit external mechanical vibration or shock directly to the HDD
body. This may result in degraded HDD performance and reliability.
Pay special attention to those models whose DE potential is not zero
volatage. If this type of model contacts the cabinet connecting the
DE to zero volatage, data errors or device faults will occur.
Grounding
---------
In an HDD with a frame, the DE and frame are electrically isolated
from each other.
The DE is connected to signal ground (SG); the frame is connected to
frame ground (FG). Isolating the DE and frame in this way prevents
the adverse effects of external electrical noise.
Generally, a computer system uses some means of connecting SG and FG
at one point in the system. The method used may vary depending on the
system structure or environmental conditions.
The DE potential in some models is not zero volatage. Be careful not
to ground the DE body of this type of model.
SCSI cable connection
---------------------
Do not confuse the connector orientation when connecting the SCSI
cable. Connecting the cable in the wrong orientation may blow the
fuse of the SCSI device that supplies power to the terminating
resistor. If the SCSI device has no fuse, misconnection may destroy
the SCSI cable.
Power-off
---------
When power is turned off, a dynamic brake stops the rotating spindle
motor. This requires a given time until the motor is completely
stopped.
Applying vibration or shock to the HDD while the spindle motor
rotates after power-off may damage the HDD.
Connecting and Disconnecting Interface Connector (2.5-inch HDD)
---------------------------------------------------------------
The printed circuit board assembly of the 2.5-inch HDD is about 0.9
mm thinner than that of conventional HDDs. When connecting or
disconnecting the interface connector, push or pull the connector
straight so as to not give excess stress to the printed circuit board
assembly. Never force a connector. Excess stress may cause the
printed circuit board assembly to warp or crack, resulting in poor
(or no) contact.
Hot Plug (SCSI Device)
----------------------
Our HDDs are designed to support the hot plug feature. However, a
drop in output voltage, output interruption, or noise may be caused
while the HDD is starting. To minimize these symptoms, it is
recommended that a discrete power supply be installed for each HDD.
Also, connection or disconnection of the HDD may cause noise on the
interface signal line and cause an interface malfunction.
To prevent such a failure, connect zero volatage (SG) first, then
connect the interface line, and finally connect the power line.
Reverse the procedure when disconnecting the HDD.
When disconnecting the HDD, do not apply vibration or shock to the
HDD, before the power is turned off. This may disturb control of the
head positioning and degrade data read-write performance.
In the worst case, applying excess shock may damage the head or disk,
resulting in data destruction.
If there is a chance that the power to the HDD containing the
terminating resistor will be turned off, design the system so that
power to the terminating resistor (TERMPWR) is supplied from another
SCSI device. Generally, TERMPWR is supplied from the initiator
(host).
Features
FUJITSU M2909/M2903/M2915 JUMPER SETTING
General
-------
Fujitsu introduces a revolutionary technology for manufacturing
high-capacity, low profile, fast access disk drives. Fujitsu's latest
technology, the MR (Magneto-resistive) head technology, has made it
possible to store 3.1 gigabytes on the M2909 as well as 2.1 gigabytes
on the M2903 and M2915.
Advanced Technologies
---------------------
The adoption of the MR head, PR4ML (Partial Response class 4 Maximum
Likelihood) and 8,9 encoding/decoding enables the storage of much
more data than was previously possible. MR technology employs
separate read/write transducers, which allows MR drives to store
nearly 300 megabits per square inch. PR4ML increases drive
performance by allowing more data to be recorded on each track and
sustained reads at 6.8 megabytes per second for the M2903 and M2909,
and 8.7 megabytes per second for the M2915. 8,9 encoding/decoding
code results in improved signal strength. Together, these
technologies realise recording densities as high as 75,535 bpi for
the M2903 and M2909, and 71,627 bpi for the M2915. Track density is
also as high as 3,553 tpi, leading to large storage capacity, and
with advanced "On the fly ECC" error correction technology, makes the
M2903, M2909 and M2915 ideal for workstations, servers, disk arrays,
minicomputers and mainframes.
Rapid Rotational Speed
----------------------
The 3 gigabytes storage capacity model M2909 and the 2 gigabytes
storage capacity model M2903 and the 2 gigabytes storage capacity
model M2903 achieve a rapid rotational speed of 5,400 rpm and
provides a fast positioning time of 2.0 milliseconds track-to-track,
10.5 milliseconds average and 22 milliseconds maximum, including
settling time.
As for 2 gigabytes storage capacity range, Fujitsu provides the
performance-focused model M2915 in addition to the M2903. The M2915
achieves a more rapid rotational speed of 7,200 rpm and provides a
fast positioning time of 2.0 milliseconds track-to-track, 9.8
milliseconds average and 21 milliseconds maximum, including settling
time. The M2915 is especially suitable for client server,
video-on-demand and transaction-processing applications.
Various Models with SCSI-2 I/F
------------------------------
The M2903, M2909 and M2915 provide both fast narrow SCSI-2 and fast
wide SCSI-2 interfaces. In each interface, single-ended or
differential can be selected. Furthermore, models with various types
of sector sizes can be chosen from, and a dual-port feature is
available dependant on the user's requirements.
Drive Features
--------------
Newly designed Disk Encloure
Large 3.1 or 2.1 GB storage capacity (formatted)
Lightweight rotary actuator
Advanced MR head
Sputtered media
Fast positioning time - 10.5/9.8 ms (average)
500,000 power-on hour MTBF
SCSI Features
-------------
SCSI-2 command set
10 MB/s fast SCSI-2
Single-ended and differential SCSI
Programmable 512 KB multi-segmented buffer
30 MB/s buffer throughput
Downloadable firmware
Read-ahead cache
Write cache
Defective block slipping
Tagged command queing (Max. 128 commands)
Reed Solomon ECC with "On-the-fly" correction
ANSI X3.131-1986, CCS 4B, X3T9.2-375R Rev. 10K and X3T9.2 855D
Rev. 12 compatibility
Programmable block size: 180 to 4,160 byte/block
Media Defects
-------------
All media defects found during manufacture are mapped out during the
factory format process, so the drive will appear defect free to the
user when first shipped. Any media defects that occur once the drive
is installed should be marked as such by the operating system.
Consult the system documentation for details of any defect management
schemes available.
My Books
