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Articles / TULARC / PC info / Hard Drives / FUJITSU Hard Drives / |  |
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Hard Drive: FUJITSU: M2248SB 240MB 5.25"/FH SCSI1 SE |
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M 2 2 4 8 S B FUJITSU
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 5.25"/FH Cylinders 1243| | |
Capacity form/unform 240/ 272 MB Heads 11| | |
Seek time / track 18.0/ 4.0 ms Sector/track 19| | |
Controller SCSI1 SINGLE-ENDED Precompensation
Cache/Buffer 16 KB Landing Zone
Data transfer rate MB/S int Bytes/Sector 1024
2.500 MB/S ext SYNC
Recording method RLL 1/7 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 5 45 | -40 60
Power: sleep W Humidity % 20 80 | 5 95
standby W Altitude km 3.000| 12.000
idle W Shock g 2 | 20
seek 40.0 W Rotation RPM 3600
read/write W Acoustic dBA 45
spin-up W ECC Bit 32
MTBF h 30000
Warranty Month
Lift/Lock/Park YES Certificates
FUJITSU M2247/M2248/M2249-S/SA/SB OEM MANUAL 41FH5023E-02
+---------------------------------------------------------++-+ | * * * * +-++-+|| CN5 | L0 L1 L2 L3 |RM57||+-+ | +---+CN104 +*++*+|XX | +---+CN105 2+-+1 |XX | +---+CN106 | CN2 |XX | +---+ | | |XX 50 Pin | 10+-+9 |XX | 1+--------+15 15+-+16 1+---------+15 |XX | 2+-CNH102-+16 | CN4 2+---------+16 |XX | 1+--------+15 | | CN3 |XX | 2+-CNH101-+16 1+-+2 |XX | |XX | 1+-----9++1-------+15 |XX | 1+--------+15 2+CNH106++-CNH105-+16 | 1 | 2+-CNH103-+16 | | 1+--------+15 |XX Power | 2+-CNH104-+16 |XX +---------------------------------------------------------+
FUJITSU M2247/M2248/M2249-S/SA/SB OEM MANUAL 41FH5023E-02
Jumper Settings
===============
x = Jumpers are set from factory
The user MUST NOT change the setting of terminals not described in
this section. Do not connect or disconnect connectors or change
terminals except for CN3/CN9 when power is on!
Setting plugs and switch are set as follows when shipped from the
factory:
CN3 11-12, 13-14, 15-16
CN5 4 ON, 5 ON
CNH104 3-4
CNH105 15-16
CN5 SCSI ID setting
--------------------
SCSI ID| CN5 | CN5 | CN5 |
| SW3 | SW2 | SW1 |
-------+-----+-----+-----+
x 0 |OFF |OFF |OFF | Set the SCSI ID so that there are
1 |OFF |OFF |ON | no duplicates between SCSI devices
2 |OFF |ON |OFF | on the same SCSI bus.
3 |OFF |ON |ON |
4 |ON |OFF |OFF | The priority of SCSI bus ARBITRA-
5 |ON |OF |ON | TION phase is determined by SCSI
6 |ON |ON |OFF | ID as follows: 7>6>5>4>3>2>1>0
7 |ON |ON |ON |
CN5 SCSI bus parity
--------------------
x SW4 ON SCSI data bus parity check by the IDD executed
SW4 OFF Not executed
CN5 Arbitration option setting
-------------------------------
x SW5 ON Enable
SW5 OFF Disable
If the arbitration phase is disabled, the Disconnect/Reconnect func-
tion on SCSI is inhibit.
CN5 Disable Synchronous Mode Transfer
--------------------------------------
SW7 ON Inhibit
x SW7 OFF Permit
Data transfer rate with the synchronous mode transfer depends on
REQ/ACK Offset, Transfer Period, and response time of ACK pulse from
the INIT.
CN5 Diag Switch
----------------
x SW8 OFF Stop (Normal Mode)
SW8 ON Execute (Diagnostic Mode)
CN4 Unit Attention Condition
------------------------------
9-10 CLOSE POWER ON, RESET, MODE SELECT PARAMETER CHANGED
x 9-10 OPEN NOT READY TO READY, RESET, MODE SELECT PARAMETER
CHANGED
CN3 SCSI terminating resistor power
------------------------------------
x 11-12 CLOSE From TERMPWR Pin and IDD (To TERMPWR Pin)
x 13-14 CLOSE
11-12 OPEN From IDD
13-14 CLOSE
11-12 CLOSE From TERMPWR Pin
13-14 OPEN
The table shows, how to supply power to the IDD SCSI terminating re-
sistor module and how to use TERMPWR lines on the SCSI bus. When the
IDD connects to a position other than at either end of the SCSI cable
do not mount the terminating resistor modules on the IDD.
+-----------------------------------------------------+
| +------ CN3 ------+ -+- +5V DC|
+++ |11 12 14 13 | | |
| TERMPWR +-+--+-----+----+-+ + Diode |
S *----------------------+ | | +------+ |
C | +-----+----+ |
S | +------+-----+ |
I *-----------------------------+ Terminator | |
| SIGNAL | Circuit | |
+++ +------+-----+ |
| + GND |
+-----------------------------------------------------+
CN3 Front panel LED indication
--------------------------------
x 15-16 CLOSE Seek complete and SCSI accessing
15-16 OPEN Seek complete
CNH105 Drive type setting
--------------------------
|M2247|M2248|M2249| The settings of pins 11 to 14 of
-------+-----+-----+-----+ CNH105 indicates the IDD model types
11-12 |OPEN |CLOSE|OPEN |
-------+-----+-----+-----+ The user must not change this set-
13-14 |OPEN |OPEN |CLOSE| tings.
-------+-----+-----+-----+
CNH105 Spindle motor after POWER ON
------------------------------------
x 15-16 CLOSE Rotate
15-16 OPEN Not Rotate
LED indicators
--------------
The 4-bit LED (L3 to L0) indicates the IDD operation status and re-
sults of diagnostics.
+----+----+----+----+-------------------------------------------- | L3 | L2 | L1 | L0 | +----+----+----+----+---------+ IDD state |RED | AMBER | COLOR | +----+----+----+----+---------+---------------------------------- |OFF |OFF |OFF |OFF |Operating +----+----+----+----+-------------------------------------------- |OFF |OFF |OFF |ON |Idle (IDD ready) +----+----+----+----+-------------------------------------------- |OFF |OFF |ON |ON |In diagnostics +----+----+----+----+-------------------------------------------- |OFF |OFF |ON |OFF |Drive error has been detected during diagnosis +----+----+----+----+-------------------------------------------- |OFF |ON |OFF |OFF |ROM error has been detected during diagnosis +----+----+----+----+-------------------------------------------- |OFF |ON |OFF |ON |RAM error has been detected during diagnosis +----+----+----+----+-------------------------------------------- |OFF |ON |ON |OFF |Register error has been detected during diagnos +----+----+----+----+-------------------------------------------- |OFF |ON |ON |ON |Buffer error has been detected during diagnosis +----+----+----+----+-------------------------------------------- |ON |OFF |OFF |OFF |Drive hard error has been detected +----+----+----+----+-------------------------------------------- |ON |OFF |OFF |ON |Spindle motor revolutions fewer than 90% +----+----+----+----+-------------------------------------------- |ON |OFF |ON |OFF |VCM overcurrent +----+----+----+----+-------------------------------------------- |ON |OFF |ON |ON |Initial seek timeout +----+----+----+----+-------------------------------------------- |ON |ON |OFF |OFF |+12V/+5V less than 80% of standard +----+----+----+----+-------------------------------------------- |ON |ON |OFF |ON |Seek error +----+----+----+----+-------------------------------------------- |ON |ON |ON |OFF |Write fault +----+----+----+----+-------------------------------------------- |ON |ON |ON |ON |Controller hard error +----+----+----+----+--------------------------------------------
FUJITSU M2247/M2248/M2249-S/SA/SB OEM MANUAL 41FH5023E-02
Notes on installation
=====================
Installation direction
----------------------
horizontally vertically
+---------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+--+---------------+---+ | | | | | |
+----------------------+ | | | | | |
| | | | | |
X X | | | | | |
+------X-------X-------+ | | | | | |
+--+-----X---X-----+---+ | +-----+ +-----+ |
| X X | +--+ +--+
| X X |
+--X--------X---+
X X
There are three possible installation directions, and the mounting
angle must be 5* from the horizontal.
Never install PCA to the top!
Ambient temperature
-------------------
When the IDD is operating, the ambient temperature measured 3 cm from
the Disk Enclosure (DE) surface and from the PCA surface must satisfy
the specified requirements.
Multi-drive connection
----------------------
Host systems, IDDs and other SCSI controllers are connected (daisy
chained) to SCSI provided that the total number of connected SCSI
devices is a maximum of eight.
SCSI cable
----------
The total length of SCSI interface cable must be shorter than 7m.
A characteristic impedance of 100 10% is recommended for unshielded
twisted-pair ribbon cable. A characteristics impedance greater than
90 is preferred for shielded cable. A minimum conductor size of 28
AWG shall be employed. It is recommended that shielded cable be used
for connection outside of a cabinet.
To minimize discontinuities and signal reflections, cables of dif-
ferent impedance should not be used in the same bus. The maximum
cable length is 7m. 1m or more cable length is recommended between
SCSI devices.
Check, that system power is off before connecting or disconnecting
cables!
Be carefull of the insertion directions of the SCSI connectors. With
the system in which terminating resistor power is supplied via the
SCSI cable, if the drive power is turned on, the overcurrent protec-
tion fuse of the terminating resistor power supplier may be blown or
the cable may be burnt if overcurrent protection is not provided.
Terminator
----------
All SCSI devices on one bus are daisy-chained with a SCSI cable. A
terminating resistor must be mounted in the SCSI device at each end
of the SCSI cable.
Since a SCSI terminating resistor module is mounted in the IDD on
shipment, it must be removed when the IDD is not connected at either
end of the SCSI cable. Also, a method for the power supply to the
terminating resistor must be selected with the setting terminal on
the IDD.
When connecting the IDD to either end of the SCSI cable, do not de-
mount the terminating resistor module.
When connecting the IDD to a position other than both ends of the
SCSI cable, demount terminating resistor modules.
SCSI cable SCSI cable
----------++-------+ ----------++-------++-------X TERM
+---++--+ +-xxx---+ +---++--+ +--++---+
| | | TERM | | | | |
| | | | | | | |
| IDD | | IDD | | IDD | | IDD |
+-------+ +-------+ +-------+ +-------+
Correct Correct
SCSI cable SCSI cable
---------+ ----------++-------X TERM
+-xxx---+ +--xxx--+
| TERM | | TERM |
| | | |
| IDD | | IDD |
+-------+ +-------+
Correct INCORRECT!
When removing the terminating resistor module from the socket, be
careful not to damage the resistor module pins, mount socket and
contiguous parts.
When mounting the terminating resistor moudle, check the mounting
direction and whetherthe module is fixed.
+- Marker shows pin 1 +- Marker shows pin 1
| |
| +-----------------+ |
| |* * * * * * * * *| | +*-*-*-*-*-*-*-*-*+
+- * | +- * Resistor |
|* * * * * * * * *| +*-*-*-*-*-*-*-*-*+
+-----------------+
Socket, terminating resistor
module not present
Sequential starting of spindle motors ------------------------------------- After the power is turned on to the IDD, a large amount of current flows in the +12 V DC line when the spindle motor rotation starts. Therefore, if more than one IDD is used, the spindle motors should be started sequentially using one of the following procedures:
1. Issue START/STOP UNIT commands at 20-second intervals to start
the spindle motors.
2. Turn on the +12 V DC power in the power supply unit at 30-second
intervals to start the spindle motors sequentially.
Noise filter
------------
To eliminate AC line noise, a noise filter should be installed at the
AC input terminal on the IDD power supply unit.
Attenuation: 40 dB or more at 10 MHz.
Circuit configuration: T type
Operator panel connector
------------------------
The operator panel connector provides for optional connection of
write protect switch.
+-- CN105 CN106|Signal|Definition
+---+-+---+ -----+------+---------------
|3 1|1|3 1| 1 | + 5V | + 5V
|4 2|2|4 2| -----+------+---------------
--+---+-+---+-- 2 | 0V | Ground
CN104 CN106 -----+------+---------------
3 |FPTCT |Write protect
view from cable -----+------+---------------
side of connector 4 |CMDCMP|Ready indicator
-----+------+---------------
FUJITSU M2247/M2248/M2249-S/SA/SB OEM MANUAL 41FH5023E-02
SCSI interface
--------------
The interface between the host system and the IDD meets SCSI standard
The following extended features are also provided:
Arbitration
Disconnection/Reselection
Synchronous data transfer with 2.5MB/s transfer rate
Command set
-----------
All of SCSI mandatory commands and extended commands are provided and
the command set meets the SCSI CCS requirements. In addition, power-
ful Vendor Unique Commands have been provided to improve data hand-
ling capability.
These commands can manipulate data through logical block addressing
independent of the physical characteristics of the IDD.
Command queuing
---------------
IDD can accept multiple commands from multiple hosts.
Data error correction
---------------------
If a recoverable error occurs, IDD attemps to recover errors from in-
side the IDD. Correctable data error can be corrected in the data
buffer so that error-free data can be transferred to the host system.
Mean Time Between Failures (MTBF)
---------------------------------
The estimated MTBF of the IDD during its life time is 30.000 hours
after an initial 3-month period.
Mean Time To Repair (MTTR)
--------------------------
MTTR is the average time taken by a well-trained service mechanic to
diagnose and repair a unit malfunction. IDD is designed for a MTTR
of 30 minutes or less.
Service life
------------
Overhaul of the drive is not required for the first five years.
Power loss
----------
Integrity of the data of the disk is guaranteed against all forms of
abnormal DC power failure except a power failure during writing.
Media defects
-------------
Cylinder 0, Head 0 and 1 are error free.
M2247S/SA/SB Fewer TBD
M2248S/SA/SB Fewer TBD
M2249S/SA/SB Fewer TBD
The maximum defect length is 32 byte.
Sector interleaving
-------------------
Sector interleaving enables the data transfer rate required on SCSI
during read or write operation of continuous blocks to be decreased.
To use sector interleaving, the user must reformat the disk drive by
a Format Unit command. The Format Unit command permits a sector in-
terval between blocks to be specified as an interleaving factor. The
user need not be concerned with correspondences of blocks with their
physical sector locations, because any data access after the comple-
tion of formatting is performed in accordance with the block arran-
gement.
In sector interleaving mode, the data blocks in a drive are accessed
at intervals of (m) sectors, where (m) is determined by the inter-
leaving factor. In read/write operations on continuouse blocks in the
sector interleaving mode, the data buffer helps decrease data trans-
fer rate required in SCSI. The data transfer rate in SCSI required
to maintain continuouse block processing without unexpected revolu-
tion delay when the interleaving factor is (m) can be determined by
the following expression:
1.25MB/s x data field length
SCSI average data transfer rate ----------------------------------
physical sector length x (m)
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