M 2 6 2 2 F B FUJITSU
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/HH Cylinders 1429| | |
Capacity form/unform 347/ 498 MB Heads 7| | |
Seek time / track 12.0/ 3.0 ms Sector/track 6| | |
Controller SCSI2 SINGLE-ENDED Precompensation
Cache/Buffer 240 KB FIFO BUFFER Landing Zone
Data transfer rate 3.000 MB/S int Bytes/Sector 1024
10.000 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 5 | 50
seek W Rotation RPM 4400
read/write 11.0 W Acoustic dBA 43
spin-up W ECC Bit 56
MTBF h 200000
Warranty Month
Lift/Lock/Park YES Certificates
**********************************************************************
L A Y O U T
**********************************************************************
FUJITSU M2622/M2623/M2624-F/FA/FB/H/HA/HB OEM MANUAL 41FH5069E-01
SCSI Single-Ended (M262xF) B17B-1790-0300A
+---------------------------------------------------------+
| 2 4 |XX 49
| +---+ 1 |XX
| CNH2 +---+ +--------------+ |XX I
| 1 3 | TERMINATING X| |XX N
| | RESISTOR | |XX T
| +--------------+ |XX E
| 1 2 1 5 |XX R
| +-+ +++++CNH6 |XX F
| 1+-CNH4+ | | +---+ |XX A
| 3+-----+ CNH7| | |XX C
| +-+ |XX E
|+---+ 9 10 2 24 |XX
|| | +-----------+ |XX 1
|+CN5+ +---CNH1----+ |
|1 2 2 1 1 23 |xx
| CNH3 +--+ |XX Power
| +--+ |XX CN1
+---------------------------------------------------------+
M2622/M2623/M2624FA/SA, P/N B17B-1790-0200A/-0250A
+---------------------------------------------------------+
| +---4 CNH2 |XX 49
| 1---+ |XX
| +-------------++1 |XX I
| |Terminator ++ |XX N
| +--------------+ |XX T
| |XX E
| 1---5 |XX R
| +---+CN6 |XX F
| 1+-CNH4+ |XX A
| 3+-----+ 24-+ |XX C
| | | |XX E
|+---+ | | CNH1 |XX
|| | | | |XX 1
|+CN5+ +-1 |
|1 2 2 1 |xx
| CNH3 +--+ +--------10 |XX Power
| +--+ 1--------+ CNH7 |XX CN1
+---------------------------------------------------------+
SCSI Differential (M262xH) B17B-1790-0400A
+---------------------------------------------------------+
| 2 4 |XX 49
| +---+ |XX
| CNH2 +---+ |XX I
| 1 3 |XX N
| |XX T
| |XX E
| 1 2 |XX R
| +-+ |XX F
| 1+-CNH4+ | | |XX A
| 3+-----+ CNH7| | |XX C
| +-+ |XX E
|+---+ 9 10 2 24 |XX
|| | +-----------+ |XX 1
|+CN5+ +---CNH1----+ |
|1 2 2 1 1 23 5 1 |xx
| CNH3 +--+ CN6 +++++ |XX Power
| +--+ +---+ |XX CN1
+---------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
FUJITSU M2622/M2623/2624-F/FA/FB/H/HA/HB OEM MANUAL 41FH5069E-01
Switches loacations
===================
x = Jumpers are set from factory
The user must not change the setting of terminals not described in
this section. Do not change setting statuses set at factory ship-
ment.
Do not change the setting of terminals except CNH1 (self-diagnosis)
or CNH7 (write protect) or do not connect or disconnect the SCSI ter-
minating resistor module (M262xF only) when power is on.
CN1 Single-Ended type SCSI (M262xF) connector
-----------------------------------------------
Pin number Signal Signal Pin number
--------------------------------------------
01 GND -DB0 02
03 GND -DB1 04
05 GND -DB2 06
07 GND -DB3 08
09 GND -DB4 10
11 GND -DB5 12
13 GND -DB6 14
15 GND -DB7 16
17 GND -DBP 18
19 GND GND 20
21 GND GND 22
23 (Open) (Open) 24
25 (Open) TERMPWR (*1) 26
27 (Open) (Open) 28
29 GND GND 30
31 GND -ATN 32
33 GND GND 34
35 GND -BSY 36
37 GND -ACK 38
39 GND -RST 40
41 GND -MSG 42
43 GND -SEL 44
45 GND -C/D 46
47 GND -REQ 48
49 GND -I/O 50
*1 Terminating resistor power (jumper selectable: For input only, for
input and output, or open)
CN1 Differential type SCSI (M262xH) connector
-----------------------------------------------
Pin number Signal Signal Pin number
--------------------------------------------
01 GND GND 02
03 +DB0 -DB0 04
05 +DB1 -DB1 06
07 +DB2 -DB2 08
09 +DB3 -DB3 10
11 +DB4 -DB4 12
13 +DB5 -DB5 14
15 +DB6 -DB6 16
17 +DB7 -DB7 18
19 +DBP -DBP 20
21 DIFFSENS GND 22 (*1)
23 (Open) (Open) 24
25 TERMPWR TERMPWR (*2) 26
27 (Open) (Open) 28
29 +ATN -ATN 30
31 GND GND 32
33 +BSY -BSY 34
35 +ACK -ACK 36
37 +RST -RST 38
39 +MSG -MSG 40
41 +SEL -SEL 42
43 +C/D -C/D 44
45 +REQ -REQ 46
47 +I/O -I/O 48
49 GND GND 50
*1 Differential Driver protection signal
*2 Terminating resistor power (jumper selectable: For input only, for
input and output, or open)
CN1 Power connector
---------------------
Pin number Signal
--------------------
1 +12 VDC
2 +12 VDC RETURN (GND)
3 +5 VDC RETURN (GND)
4 +5 VDC
CNH1 PER default values setting
--------------------------------
| PER default value of the MODE SELECT parameter
----+-----------------------------------------------
x 1-2 | Short "0"
| Open "1"
Set the default value of the PER (post error) flag of the read/write
error recovery parameter (page code=1) and verify error recovery
parameter (page code=7) of the MODE SELECT parameter according to
table.
The MODE SELECT parameter value specific to the user can be saved on
the disk with the MODE SELECT command specification. There are no
MODE SELECT parameter saved values on the IDD when the IDD is shipped
from the factory. The value set with the terminal is used as the ini-
tial value of PER flag when there are no saved values. When a saved
value is generated by the user, the IDD reads it when power is turned
on and operates using that value and this setting is ignored.
CHN1 SCSI level setting
------------------------
+-------+------------------------------------+---------+---------+
| | INQUIRY data | | |
| +----------+-----------+-------------+ | |
| Mode |Byte 2, |Byte 3, | Byte 7 | INQUIRY | 3 - 4 |
| |bits 2 to |bits 3 to 0| (Provided | VPD | |
| |0 (ANSI |(Response | function) | informa-| |
| |version) |data format| | tion | |
+-------+----------+-----------+-------------+---------+---------+
| SCSI-2| '0,1,0' | '0,0,1,0' |Indicates | Valid | |
| mode |(SCSI-2) | (SCSI-2) |the function | | Open |
| | | |of the IDD | | |
| | | |for each bit.| | |
+-------+----------+-----------+-------------+---------+---------+
| | '0,0,1,' |'0,0,1,0' | | | |
| SCSI-1|ANSIX3.131|ANSIX3T9.2/|All bits '0' | Invalid | Short |
x | CSS |1986 |85-52 | | | |
| mode |(SCSI-1) |(CCS) | | | |
+-------+----------+-----------+-------------+---------+---------+
Set the display contens of data posted to the initiator from the IDD
with the INQUIRY command according to table.
When the SCSI-1/CCS mode is selected, parameters transfered by the
MODE SENSE command are as follows.
Page code 3F (all pages equipped in the IDD are transferred)
Page 7 and page 8 are not transferred
Page 1, page 2, page 4 are transferred with the specified
length of CCS.
When the page 1, page 2 or page 4 is specified individually, it is
transferred with the specified length of CCS.
When the page 7 or page 8 is specified individually, it is trans-
ferred with the specified length of SCSI-2.
For the recovery parameter of the VERIFY, the recovery parameter
in page 1 is used.
When the SCSI-1/CCS mode is selected and the REQUEST SENSE command is
isssued with specifying the transfer byte length to 0, the IDD trans-
feres the 4-byte sense data.
Refer to SCSI Logical Specifications Manual for the details of the
INQUIRY command, MODE SENSE command and REQUEST SENSE command.
CNH1 Offline self-diagnostics setting
--------------------------------------
5-6 Short Executed (diagnostic mode)
x Open Stopped (normal operation mode)
Set starting/stopping the IDD offline self-diagnostics according to
table. The offline self-diagnostics tests the IDD controller func-
tions and the basic read/write operation on the disk drive. In normal
operations, this setting terminal must be opened.
CNH1 UNIT ATTENTION report mode setting
----------------------------------------
x 7-8 Short For a command other than INQUIRY, REQUEST SENSE,
or PRIORITY RESERVE the IDD responsed with the
CHECK CONDITION status. (SCSI standard)
Open All received commands are executed normally.
(The CHECK CONDITION status caused by the UNIT
ATTENTION condition is not reported)
Sets the response method against the received command when the IDD
keeps the UNIT ATTENTION condition. This mode is set for system re-
quirement, however, it is recommended to use the SCSI standard set-
ting (setting at factory shipment)
CNH1 Reselection retry setting
-------------------------------
| Retry count of RESELECTION phase
----+---------------------------------
x 9-10| Short (unlimited)
| Open 10
Set the retry mode of the RESELECTION phase according to table.
CNH1 Reserved
-----------------------------
11-12 Reserved
CNH1 SCSI bus parity setting
-----------------------------
x 13-14 Short Executed
Open Not executed
Set whether the parity bit check of the SCSI data bus is executed
according to the table.
CNH1 Synchronous mode transfer request setting
-----------------------------------------------
Set whether synchronous mode transfer request from the TARG is en-
abled according to the table. When the synchronous mode data transfer
is enable, the IDD responds the SYNCHRONOUS DATA TRANSFER REQUEST
message to the INIT that issues the first command after power-on.
x 15-16 Short Enabled
Open Disabled
This setting does not affect asynchronous mode transfer.
When synchronous mode transfer is disabled, the IDD operates as
follows:
When the SYNCHRONOUS DATA TRANSFER REQUEST message is sent from the
INIT, the IDD replys to that message and the DATA IN and the DATA
Out phases of the SCSI bus can be executed in synchronous mode.
The IDD does not send the SYNCHRONOUS DATA TRANSFER REQUEST message
to the INIT.
The maximum data transfer rate in synchronous mode is determined when
the SYNCHRONOUS DATA TRANSFER REQUEST message is excahnged between
the IDD and INIT.
The INIT must determine the parameter sent to the IDD when the mes-
sage is excahnged in consideration of the signal transfer character-
istics of the system SCSI bus and the data reception capacity of the
INIT.
The IDD can transfer up to 10MB/s in synchronous mode. However, since
the configuration of the SCSI bus and its transfer characteristics
differ depending on the system, the maximum transfer rate in which
data can be transfered in a stable condition must be determined for
each system.
For reference, the IDD data transfer rate in synchronous mode and the
restrictions in the system configuration of the SCSI bus are shown
below. The following values are rough standards. The values must be
evaluated for each system.
Single ended SCSI bus
+----------------------+------------------+---------------------+
|Maximum data transfer |Maximum length of |Number of connectable|
|rate of the IDD (MB/s)|the SCSI cable (m)|SCSI devices |
+----------------------+------------------+---------------------+
| 3.00 to 10.00 | * | * |
+----------------------+------------------+---------------------+
| 2.67 or less | 6.00m M62xF | 8 |
| | 25.00m M26xH | |
+----------------------+------------------+---------------------+
* The maximum SCSI cable length and the number of connectable
SCSI devices must be determined for each system.
CNH1 LED display requirement setting
-------------------------------------
x 17-18 Short Light when the IDD operates.
Open Light when the IDD is ready.
Set the display requirements of the LED on the front panel or exter-
nal operator panel.
CNH1 Motor start mode setting
------------------------------
x 19-20 Short The motor is started immediately after power
is turned on.
Open Starting the motor is controlled with the
START/STOP command.
Set how to start the IDD spindle motor according to table. This set-
ting only determines the operation mode when power is turned on.
Stopping or restarting the spindle motor can be controlled with the
START/STOP UNIT command for both modes.
CNH1 Power supply to SCSI terminating resistor circuit on IDD
(M262xF) Single-Ended type
---------------------------------------------------------------
x 23-24 Short Power is supplied to the terminating resistor
x 21-22 Short from IDD and TERMPWR pin. Power is supplied
to the TERMPWR pin from the IDD.
23-24 Open TERMPWR pin is not used. Power is supplied to
21-22 Short the IDD terminating resistor only from IDD.
23-24 Short Power is not supplied to the terminating
21-22 Open resistor from 21-22 Open the IDD. Power is
supplied to the IDD terminating resistor only
from the TERMPWR pin.
When the IDD connects to a position other than both ends of the SCSI
cable, do not mount the terminating resistor module on the IDD.
+-----------------------------------------------------+
| +------ CNH1 -----+ -+- +5V DC|
+++ | 23 24 22 21| | |
| TERMPWR +------+ +-+--+-----+----+-+ + Diode |
S *---------+ FUSE +-----+ | | +------+ |
C |26 +------+ +-----+----+ |
S | +------+-----+ |
I *-----------------------------+ Terminator | |
| SIGNAL Mounted | resistor | |
+++ in socket+------+-----+ |
| + GND |
+-----------------------------------------------------+
CNH1 Power supply to terminal resistor circuit on SCSI
(M262xH) Differential type
----------------------------------------------------------------
x 21-22 Short Power is supplied from the IDD
Open Power is supplied from TERMPWR pin only
(IDD power supplied is not used)
+-----------------------------------------------------+
| + CNH1 + -+- +5V DC|
+++ | 22 21| | |
| TERMPWR +-+--+-+ + Diode |
S *----------------------+ | +------+ | |
C |25 | +---+ Fuse +------+ |
S |26 | +------+ |
I *----------------------+ |
| TERMPWR |
+++ |
| |
+-----------------------------------------------------+
CNH2 For testing at factory
---------------------- -----
1-2 Open User setting inhibited
3-4 Open User setting inhibited
The user must not be change CNH2 setting. (The IDD does not operate
correctly when shorted)
CNH4 Spindle sync connector
----------------------------
Pin number Signal
--------------------
01 GND IN
02 SS IN
03 GND OUT
04 SS OUT
CNH7 SCSI ID setting
---------------------
SCSI ID 5-6 3-4 1-2
----------------------------
0 Open Open Open
1 Open Open Short
2 Open Short Open
3 Open Short Short
4 Short Open Open
5 Short Open Short
6 Short Short Open
x 7 Short Short Short
1. Set the SCSI ID so that there are no duplicates between SCSI
devices on the same SCSI bus.
2. The priority of SCSI bus use in ARBITRATION phase is determinated
by SCSI ID as follows: 7 > 6 > 5 > 4 > 3 > 2 > 1 > 0
CNH7 Write protect setting
---------------------------
7-8 Open Write operation is inhibited.
x Short Write operation is enabled.
Enabling or disabling write protect function is set by these jumpers.
By setting this write protect function, writing into disk medium is
inhibited.
CN5 External operator panel connector
---------------------------------------
Pin number Signal
--------------------
01 LED (V)
02 -LED
CN6 External operator panel connector
---------------------------------------
Pin number Signal
--------------------
01 GND
02 -ID2
03 GND
04 -ID1
05 GND
06 -ID0
**********************************************************************
I N S T A L L
**********************************************************************
FUJITSU M2622/M2623/M2624-F/FA/FB/H/HA/HB OEM MANUAL 41FH5069E-01
Installation direction
----------------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
x x | | | | | |
+------x------x-------+ | +-----+ +-----+ |
+-+------x--x-------+-+ +--+ +--+
| xx |
| x x |
+---x--------x----+
x x
The tolerance of the angle is 5* from the horizontal plane.
Notes of mounting
-----------------
The disk enclosure (DE) of the IDD serves as a signal ground (SG) and
is insulated from the mounting frame (frame ground: FG). As this
insulation is maintained after the IDD is mounted in the system, the
following precautions must be followed.
Generally, SG an FG are connected at one point in the system
enclosure. Therefore, use following procedure to maintain the
insulation when mounting the IDD:
a) Use the frame with an embossed structure or the like to avoid
contact between the DE base and FG. Mount the IDD with making a
gap of 2.5 mm or more between the IDD and the frame of the system.
b) The inward projektion of the screw from the IDD frame wall at the
corner must be 4 mm or less.
When the drive is mounted using side screw hole, don't use the center
hole.
External magnetic field
-----------------------
The drive should not be installed near the ferromagnetic body like a
speaker to avoid the influence of the external magnetic field.
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 requirement. For the DE surface temperature at opera-
ting, the contact temperature at the measurement point must satisfy
the specified requirement.
The maximum ambient temperature with in 45* C.
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 to pre-
vent overload of the power supply unit.
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. The specification of
this noise filter is as follows:
Attenuation: 40 dB or more at 10 MHz.
Circuit construction: T-configuration is recommended.
SCSI cable
----------
All SCSI devices on one bus are daisy-chained with an SCSI cable.
A terminating resistor must be mounted in the SCSI device at each end
of the SCSI cable.
The maximum number of SCSI devices that can be connected to the SCSI
bus is 8, including the host adapter, IDD, and other SCSI equipment.
The connector for the SCSI cable must be an unshielded 50-contact
socket which has two rows of 25-socket at 2.54 mm (0.1 inch) apart.
It should also have a key way to prevent insertion in the wrong
direction (bump type connector).
The maximum length of the SCSI cable is as follows. If more than one
SCSI device is connected, the total cable length must not exceed the
following.
6m cable length Single-Ended type SCSI (M262xF)
25m cable length Differential type SCSI (M262xH)
The use of a 25-pair twisted cable satisfying the following require-
ments is recommended:
Single ended type: Conductor size: 28 American Wire Gauge (AWG)
or bigger
Characteristic Impedance: 100 to 132
Each pair of wires in the 25-pair twisted cable must be connected to
pins n and n+1 (where n is an odd number) on the interface connector.
Cables having an identical impedance must be use on the same SCSI bus
to reduce signal reflection and maintain transmission characteristics
When a SCSI device is connected to the SCSI cable except at either
end of the cable, connection to the SCSI connector must be at a
branchpoint of the cable. If a SCSI device is connected to one end of
the SCSI bus, no cable should be connected after the last SCSI device
except when the cable has a terminating resistor.
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.
Power cable
-----------
IDDs must be star-connected to the DC power sypply (one to one con-
nection) to reduce the influence of load variations.
Signal ground connector
-----------------------
For DC ground, an SG terminal is mounted on the rear of the drive.
A DC ground cable may be installed depending on the system require-
ments. This cable is generally connected to the ground of the power
supply unit. Connection between more than one IDD may be in a daisy
chain.
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 M262xF only! Correct M262xF and M262xH
SCSI cable SCSI cable
---------+ ----------++-------X TERM
+-xxx---+ +---++--+
| TERM | | |
| | | |
| IDD | | IDD |
+-------+ +-------+
Correct M262xF only! Correct M262xF and M262xH
SCSI cable
----------++-------X TERM
+--xxx--+
| TERM |
| |
| IDD |
+-------+
INCORRECT!
SCSI terminating resistor (M262xF only)
---------------------------------------
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 module, check the mounting
direction and wether the module is fixed.
+- Marker shows pin 1 +- Marker shows pin 1
| |
| +-----------------+ |
| |* * * * * * * * *| | +*-*-*-*-*-*-*-*-*+
+- * | +- * Resistor |
|* * * * * * * * *| +*-*-*-*-*-*-*-*-*+
+-----------------+
Socket, terminating resistor
module not present
External operator panel connector
---------------------------------
When the external operator panel is not connected to CN6, CN6 should
be opened. (default setting)
When the external operator panel is connected, pins of CNH7 corres-
ponding to the signals set by the external operator panel should be
opened.
CN6
+------+
| 1 2| ID2
| 3 4| ID1
| 5 6| ID0
+------+
CN5
+---+
| 1-+--------------------+
| 2-+---------+<---------+
+---+ external LED
The output signals of pin 1 and pin 2 of CN5 actuate the external LED
as same as LED on the front panel of the disk drive. The indication
can be changed with a setting terminal. Any load other than the ex-
ternal LED should not be connected to the LED-terminals.
Setting of CN6 can be changed when power is on. The SCSI ID setting
is valid after power is turned on again or the SCSI bus is reset.
Confirming initial operations
-----------------------------
Do not move the drive when power is turned on!
1. Initial operation in the case where the jumper is set so that
motor starts at power-on.
1. When power is turned on, the LED blinks an instant and the IDD
executes initial self-diagnosis.
2. If an error is detected in the initial self-diagnosis, the LED
on the front panel blinks periodically. The spindle motor may
or may not start rotating in this stage.
3. When the LED display requirements are set to "READY status",
the LED on the front panel lights 15 seconds after power is
turned on.
4. When the LED display requirements are set to "the IDD operates"
the LED on the front panel remains off (when the initiator
accesses the IDD via the SCSI bus, the LED lights).
2. Initial operation in the case where the jumper is removed so that
motor starts with a START/STOP command.
1. When power is turned on, the IDD executes initial self-diag-
nosis.
2. If an error is detected in the initial self-diagnosis, the LED
on the front panel blinks.
3. The spindle motor does not start rotation until the START/STOP
UNIT command for the start is issued. The INIT needs to issue
the START/STOP UNIT command to start the spindle motor.
4. The disk drive enters the READY status 15 seconds after the
START/STOP UNIT command is issued. At this time, the IDD reads
"system information" from the system space on the disk.
5. When the LED requirements are set to "READY status", the LED on
the front panel ligths as in step 4.
6. When the LED display requirements are set to "in connection
with SCSI bus", the LED blinks during command execution.
3. Items to check if an error occurs.
* Check that cables are mounted correctly.
* Check that power and voltages are supplied correctly.
* Check the setting of each jumper setting terminal. The initial
operation depends on the setting of the motor start mode and LED
display requirements.
* If an error is detected in initial self-diagnosis, the LED on
the front panel blinks. In this case, it is recommended to issue
the REQUEST SENSE command from the initiator (host system) to
obtain information (sense data) for error analysis.
When the LED display requirements are set to "READY status", the
LED is turned off while the drive continues command execution.
However, since the LED is turned off for only one blink, the LED
may seem to be turned on and off or not turned off at all.
When the LED display requirements are set to "in connection with
SCSI bus", the LED lights during the IDD is executing a command.
Howerver, in some commands the lighting time is only an instant.
Therefore it may seem that the LED blinks or the LED remains off.
Since the IDD has the automatic readjustment function of positi-
oning (seek) control, it automatically executes the adjustment
operations with seek at specific intervals from power on (first
adjustment: 5 minutes after power on). The seek sound is heard
during the adjustment but htis does not indicate a drive error.
Dismounting drives
------------------
Take the drive offline.
Disconnect system power before removing the drive. Do not remove
mounting screws holding the cables and drive while power is on.
Do not move the drive until it completely stops (30 seconds after
spindle motor is stopped with START/STOP UNIT command or after
power is turned off).
FUJITSU DISK-SUPPORT
--------------------
Harddisk parameters for SUN-OS (UNIX)
+--------+---------+---------+----------+-----+-------+
|Disk Typ|Data Cyl.|alt. Cyl.|phys. Cyl.|Heads|sec/trk|
+--------+---------+---------+----------+-----+-------+
|M2622Fx | 1429 | 2 | 1431 | 7 | 64 |
+--------+---------+---------+----------+-----+-------+
|M2623Fx | 1151 | 2 | 1153 | 9 | 80 |
+--------+---------+---------+----------+-----+-------+
|M2624Fx | 1463 | 2 | 1465 | 11 | 63 |
+--------+---------+---------+----------+-----+-------+
**********************************************************************
F E A T U R E S
**********************************************************************
FUJITSU M2622/M2623/M2624-F/FA/FB/H/HA/HB OEM MANUAL 41FH5069E-01
Media defects
-------------
The number of allowable media defects are as follows. The maximum
defect length is 8 bytes.
M2622: 160 and less
M2623: 210 and less
M2624: 260 and less
High speed data transfer
------------------------
The data transfer rate on the SCSI bus is 4MB/s maximum in asynchro-
nous mode and 10MB/s in synchronous mode. Such a high data transfer
rate on the SCSI bus can be useful with the large capacity buffer
in the IDD.
The maximum data transfer rate in asynchronous mode may be limited
by the response time of the initiator and the length of SCSI bus
length.
The maximum data transfer in synchronous mode on the single-ended
SCSI bus may be limited by the cable length and transmission charac-
teristics of the SCSI bus.
240KB data buffer
-----------------
Data is transfered between SCSI bus and disk media through the em-
bedded 240KB data buffer in the IDD.
Since the initiator can control the disconnect/reconnect timing on
the SCSI bus by specifying the condition of stored data in the data
buffer or empty condition of the data buffer, the initiator can per-
form the effective input/output operations with utilizing high data
transfer capability of the SCSI bus regardless of actual data trans-
fer rate of the disk drive.
Read-Ahead cache feature
------------------------
After executing the READ command, the IDD reads automatically and
stores (prefetches) the subsequent data blocks into the data buffer
(Read-Ahead caching).
The high speed sequential data access can be achieved by transfering
the data from the data buffer without reaccessing the disk in case
the subsequent command requests the prefetched data blocks.
Command stack feature
---------------------
The IDD has a command stack feature corresponding to up to 7 initia-
tors. Therefore, the IDD can accept and stack an input/output command
issued by another initiator even if the IDD is executing another
command. The stack command is retrieved and executed in stacked order
after the present command has completed.
Landing zone
------------
The actuator positions heads on the innermost landing zones over the
disk when the power is off or the spindle motor is stopped.
SCSI bus configuration
----------------------
Up to eight SCSI devices can be connected to the SCSI bus, with any
combination of the SCSI devices that operate as initiator and that
operate as target.
Each SCSI device on the bus has its own unique address (SCSI-ID: #n).
For input/output operation, a peripheral device attached to the SCSI
bus that operates as target is addressed in unit called as logical
unit. A unique address (LUN: logical unit number) is assigned for
each logical unit.
The initiator selects one SCSI device by specifying that SCSI ID,
then specifies the LUN to select the peripheral device for input/
output operation.
The IDD is constructed so that the whole volume of disk drive is a
single logical unit, the selectable numbers of SCSI ID and LIN are as
follows:
SCSI ID: Selectable from 0 to 7
LUN: 0 (fixed)
+-------------+ +-------------+ SCSI bus +----------+LUN=0
| Host system +--+Host Adapter +-------+---+ IDD |(fixed)
| | | ID #7 | | | ID #0 |
+-------------+ +-------------+ | +----------+
| +----------+LUN=0
+---+ IDD |(fixed)
| | ID #1 |
| +----------+
| +------------+
+---+ Controller +--+----+--
| | ID #2 | LUN0 LUN1
| +------------+
Mean Time Between Failures (MTBF)
---------------------------------
The estimated MTBF of the IDD during its life time is 200.000 hours
after an initial 3-month period.
Mean Time To Repair (MTTR)
--------------------------
MTTR is the average time taken ba a well-trined service mechanic to
diagnose and repair a drive malfunction. The drive is designed for a
MTTR of 30 minutes or less.
Service life
------------
Overhaul of the drive is not required for the first five years or
20.000 power-on hours which ever earlier if handled correctly.
Data security at power failure
------------------------------
Integrity of the data on the disk is guaranteed against all forms of
DC power failure except on blocks where a write operation was being
performed. The above does not applied to formatting disks or assign-
ing alternate blocks.
DISCLAIMER
----------
Failure of the M262xF/H intelligent disk drive is defined as a fai-
lure requiring adjustments, repairs or replacement. Fujitsu is not
responsible for drive failures caused by misuse by the user, poor
environmental conditions, power trouble, host problems, cable fai-
lures, or any failures not caused by the drive itself.
**********************************************************************
G E N E R A L
**********************************************************************
FUJITSU => GDT
Tips & Hints about ICP controllers and other peripherals
========================================================
Tagged queues and Fujitsu M 26xx harddisks
------------------------------------------
Fujitsu Harddisks of the M26XX series do not support the SCSI-II
feature tagged queues. You should disable this feature in the
initialize disks menue of the GDTSetup program. An inquiry command
shows, that the harddisk supports tagged queues (this is why you can
enable it in the GDTSetup) but this is not true as stated by Fujitsu
Germany.