5.25-inch Mirror Drive SCSI MODEL AXRA

5.25-inch Mirror Drive
SCSI MODEL
AXRA-N Series
User's Manual
P/N A203030
Revision 1.1e
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5.25-inch Mirror Drive SCSI Model User's Manual
Introduction
Thank you for selecting the 5.25-inch Mirror Drive SCSI Model AXRA-N Series. This manual
describes how to install, operate, and maintain your Mirror Drive, and will help familiarize you with
the Mirror Drive and its features.
NOTICE
Please be sure to read the user's manual before using your Mirror Drive.
This manual provides information on and describes appropriate handling procedures and
configurations for all product functions. This information will allow the user to take full advantage of
the 5.25-inch Mirror Drive SCSI Model AXRA-N Series.
In the unlikely event you experience problems, the manual provides helpful information and
instructions.
RETAINING PACKAGING MATERIALS
The original packaging materials protect the Mirror Drive from damage during transportation.
After unpacking the Mirror Drive, please retain the packaging materials in case you need to ship the
Mirror Drive for repairs.
This product is sealed in an antistatic and moisture-proof bag before shipping. Open the bag only
when about to begin setup.
RECORDING THE PRODUCT NAME, VERSION, AND SERIAL NUMBERS
Before installing the Mirror Drive on the host computer, please jot down the model name, version,
and serial numbers.
Section "2.1 Part Names" shows the label location of model name, version, and serial number.
●
THIS DOCUMENT MAY NOT BE REPRODUCED OR COPIED IN WHOLE OR IN PART.
●
THE CONTENTS OF THIS DOCUMENT ARE SUBJECT TO CHANGE WITHOUT NOTICE.
●
WE HAVE MADE EVERY EFFORT TO ENSURE THE ACCURACY AND COMPLETENESS
OF THIS DOCUMENT. IF YOU FIND INACCURACIES OR OMISSIONS, PLEASE CONTACT
YOUR DISTRIBUTOR.
Copyright(c)
Storage Vision Co., Ltd
All rights reserved.
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To ensure safe use of this product:
This user's manual uses the following symbols to highlight important points related to safe use of this
product. Please observe all safety information indicated in this way.
SAFETY SYMBOLS
To protect against personal injury and product damage, the following symbols are used throughout
this manual to highlight safety information.
Warning
Indicates a potentially hazardous situation that may result in
death or serious injury to the user or severe damage to the
product.
Caution
Indicates a potentially hazardous situation that may result in
serious injury to the user or damage to the product.
Important
Indicates important information, failure to observe which may
result in improper product function.
WARNING / CAUTION LABELS
Labels with black lettering against a yellow background affixed either to the exterior or interior of the
product are Warning or Caution labels that provide important safety information. Observe all
directions given on these labels.
In the case of appearing Warning or Caution labels in addition to this user's manual, be sure to
follow the directions on it.
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5.25-inch Mirror Drive SCSI Model User's Manual
Warning
y If you detect any abnormal conditions, such as smoke or foul odors, immediately shut off power for
the host computer.
y If any foreign materials (metals, water, liquids, etc.) enter the Mirror Drive, immediately shut off
power for the host computer.
y Do not use the Mirror Drive in hot or damp locations. Using this product in hot or damp locations
may result in fire, electrical shock, or damage.
y Do not disassemble or modify this product. ADTX cannot guarantee the performance or safety of
any product that has been repaired by the customer or by an unauthorized third party. Repairing
by yourself may result in fire, electrical shock, or damage.
y Before connecting or disconnecting the interface connector, shut off power for the host computer
and any connected devices. To avoid placing excessive stress on the printed circuit board of the
Mirror Drive, push or pull the connector only along the axis perpendicular to the board. Avoid
bending the connectors. Avoid using undue force to connect or disconnect connectors or cables,
which may result in fire, electrical shock, or damage.
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Caution
y Do not use the Mirror Drive in locations subject to vibration or shock exceeding the specified
values. Use of the Mirror Drive in such locations may result in malfunctions or disk failure.
y Do not use the Mirror Drive in locations or circumstances subject to condensation. Rapid
temperature changes may cause condensation to form on the Mirror Drive itself. If you believe
condensation has occurred, leave the Mirror Drive to acclimate to the new environment. Avoid
using the Mirror Drive until it reaches the new ambient temperature.
y Do not place the Mirror Drive near electronic components with strong electromagnetic fields, such
as televisions or loudspeakers.
Use of the Mirror Drive in such locations may result in malfunctions or disk failure.
y Turn power off before moving the unit with the Mirror Drive. This will prevent damage to the HDD
and other internal components of the Mirror Drive.
y Do not turn power on immediately after turning power off, or turn power off immediately after
turning power on. Leave at least 20 seconds between successive operations involving powering
on or off. This will help prevent damage to or malfunction of the mounted HDD. The HDD motor
spindle requires about 20 seconds to stop rotating and come to a full rest. In addition, if removing
the correctly functioning drive unit for replacement, turn power off and wait at least 20 seconds.
y Do not remove the correctly functioning drive unit while power is on. The Mirror Drive will detect it
failed if the drive unit is removed. Removing the no failed drive unit may damage the disk heads
and platter inside the HDD.
y Store the Mirror Drive in the antistatic bag. Leaving this product unpacked and unused for a long
periods may lead to malfunctions or disk failure.
y Avoid applying excessive pressure to the covers of the drive unit, which may lead to malfunctions
or disk failure.
y Do not block the ventilation openings. Operating without proper cooling to the Mirror Drive may
lead to the cause of a fire.
y Do not move the Mirror Drive with holding the bezel.
y Do not insert hands or tools into empty slots, which may lead to electrical shock or malfunctions.
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5.25-inch Mirror Drive SCSI Model User's Manual
Important
y Back up all important data stored on the Mirror Drive to a suitable storage medium, such as tape
drive or MO drive. This product's mirroring technology prevents data loss even if one drive unit
fails. If two drive units fail at the same time or if a non-redundant part fails, data loss may still
occur. Additionally, accidental deletion of data or equipment damage may also result in data loss.
y Do not block the ventilation openings of HDD. Lack of the cooling airflow may lead to hard disk
drive failure.
y Wait at least 10 seconds after the access indicator has stopped flashing before initiating the
shutdown procedure for your host computer. The Mirror Drive uses cache memory to store data
frequently accessed from the HDD. Except in emergencies, you must follow the operating
system's shutdown procedures. Failure to so may result in loss of data stored in cache memory.
y Never remove or exchange the drive units, except to replace controller units or drive units, since
the Mirror Drive controls drive units by using its serial number. Thus, removal or replacement may
result in failure to boot up the host computer.
y When installing it in the host computer's bay, mount the Mirror Drive securely using the mounting
screws provided (0.49 Nm recommended).
y In the event of a drive unit failure, it may take up to 25 seconds to start up the Mirror Drive.
The host computer may yet fail to recognize due to BIOS timeout settings.
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Handling Static-Sensitive Devices
To prevent damage to components from static electricity, observe the following precautions when
handling this product.
y Before handling the Mirror Drive or other static-sensitive devices, touch a metal object, such as
the metal enclosure of the host computer, to discharge any static electricity from your body.
y Always handle components carefully. Never touch exposed circuitry.
y When replacing controller units or drive units, or when moving the Mirror Drive, place the
antistatic bag in which this product was shipped on a flat, level surface. Work on the Mirror Drive
in this area.
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5.25-inch Mirror Drive SCSI Model User's Manual
Mounting on Host Computer
Install the Mirror Drive oriented horizontally, as in <A> below. Mounting the Mirror Drive in an
orientation other than the one specified may increase operating temperatures or place unexpected
mechanical stress on the Mirror Drive.
<A> Drive unit in horizontal position
<B> Drive unit in vertical position
<C> Drive unit on its side
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Contents
Introduction
....................................................................... i
To ensure safe use of this product: ................................................... ii
Warning ........................................................................... iii
Caution
...........................................................................iv
Important .......................................................................... v
Handling Static-Sensitive Devices ....................................................vi
Mounting on Host Computer ........................................................ vii
Contents ......................................................................... viii
1. Introducing the 5.25-inch Mirror Drive ............................................... 1
1.1 Features ........................................................................ 1
1.2 Mirroring ........................................................................ 2
1.3 Cache Buffer Function ............................................................ 2
2. External Dimensions .............................................................. 3
2.1 Part Names ..................................................................... 3
2.2 External Dimensions .............................................................. 5
2.3 Screw Hole Dimensions for Attachment .............................................. 6
3. Mounting in the Host Computer .................................................... 7
3.1 DIP Switch Settings ............................................................... 7
3.2 Mounting in the Host Computer ..................................................... 7
3.3 Connecting Cables ............................................................... 8
3.4 Turning on Main Power ............................................................ 8
4. Settings ......................................................................... 9
4.1 Configuration DIP Switch 1 ......................................................... 9
4.1.1 Normal Mode ............................................................... 10
4.1.2 SCSI ID ................................................................... 10
4.1.3 Write Cache Mode .......................................................... 11
4.2 Configuration DIP Switch 2 ........................................................ 12
4.2.1 Single Ended Mode .......................................................... 13
4.2.2 Auto Spin Mode ............................................................. 13
4.3 TERMPWR Switch
.............................................................. 13
4.4 Buzzer Switch .................................................................. 14
5. Status Display .................................................................. 15
5.1 Indicator ....................................................................... 15
5.1.1 Access Indicator ............................................................ 15
5.1.2 Drive Status Indicator ........................................................ 15
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5.25-inch Mirror Drive SCSI Model User's Manual
5.1.3 Buzzer .................................................................... 16
5.2 External Output Signal ........................................................... 17
5.2.1 Status Output Signal ......................................................... 17
5.2.2 External LED Output Signal ................................................... 17
6. Removal and Replacement ....................................................... 18
6.1 Troubleshooting ................................................................. 18
6.2 Replacing Drive Units ............................................................ 19
6.2.1 Replacing a Drive Unit ....................................................... 19
6.2.2 Replacing Both Drive Units ................................................... 25
6.3 Replacing the Controller Unit ...................................................... 29
6.3.1 Replacing the Controller Unit (with both drive units functioning normally) .............. 30
6.3.2 Replacing the Controller Unit (when one drive unit fails) ............................ 33
6.4 Other problems ................................................................. 37
6.5 Data Rebuilding ................................................................. 37
Appendix A
Specifications ........................................................ 38
A.1 Product Specification ............................................................ 38
A.2 External Output Signal Specifications ............................................... 39
A.2.1 Status Output Signal ........................................................ 39
A.2.2 External LED Output Signal ................................................... 41
Appendix B
Accessories .......................................................... 43
Appendix C
Factory Default Setting ................................................ 44
Appendix D
Replacement Parts .................................................... 45
Information ....................................................................... 46
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5.25-inch Mirror Drive SCSI Model User's Manual
1. Introducing the 5.25-inch Mirror Drive
Incorporating two 3.5-inch disk drives, the ADTX 5.25-inch Mirror Drive uses mirroring technology to
safeguard data and to provide uninterrupted operations.
Since the host computer will recognize the Mirror Drive as a standard SCSI HDD, installing the
Mirror Drive simply involves connecting it to a SCSI cable from the host computer.
1.1 Features
y In the event that one of the drive units fails, the Mirror Drive will continue to function, maintaining
data integrity. When the failed disk is replaced with a new replacement disk, data rebuilding will
begin automatically.
y The Mirror Drive is provided with large cache memory capacity for high performance.
y Based on the industry standard SCSI-3 interface, the Mirror Drive can be used like any other
standard SCSI HDD. This product requires no unique device drivers and is compatible with most
operating systems. Moreover, it will be easily daisy-chained to a series of existing SCSI HDDs or
devices.
y Mirroring technology implemented via hardware reduces system overhead.
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1.2 Mirroring
Mirroring technology involves writing data to two drive units simultaneously. If one drive unit fails, data
is written to and read from the other drive unit.
1.3 Cache Buffer Function
The Mirror Drive is equipped with large cache memory capacity. With write cache mode enabled, the
Mirror Drive will signal completion of command processing to the host computer when data is written
to cache memory. The performance will be improved by writing accumulated data to the HDD while
the host computer does not access to the Mirror Drive. Write cache mode is enabled via DIP Switch
1. The default setting at shipment is ON (enabled).
Important
2
Always observe the shutdown procedure specified for the
host computer operating system. In emergencies, wait at
least 10 seconds to be sure both the access indicator and
the drive status indicator have stopped flashing before
shutting off power. Turning off power while the access
indicator or the drive status indicator is on may result in loss
of data still residing in cache memory.
5.25-inch Mirror Drive SCSI Model User's Manual
2. External Dimensions
2.1 Part Names
Front View (With Bezel Closed)
Key
Ventilation opening
Front View (With Bezel Open)
The screw for the drive unit
Access indicator
Drive unit 1
Drive unit 1 status indicator
1
Drive unit 2
2
Drive unit 2 status indicator
Buzzer switch
ON
BZR
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Back View
SCSI connector
Power connector
DIP switch 1
Status bit connector
(For details, refer to "A.2.1 Status Output Signal")
External LED connector
(For details, refer to "A.2.2 External LED Output Signal")
TERMPWR
DIP switch 2
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5.25-inch Mirror Drive SCSI Model User's Manual
146
2.2 External Dimensions
ADTX
81.9
15.6
2
MODEL:AXRA-N402S
EC:YB****
S/N:BX00001
204
219.6
Model name
Version
Serial number
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2.3 Screw Hole Dimensions for Attachment
9.9
11.9
Mounting screw holes
8-#6-32UNC(x8)
Same on opposite side
30.2
15
64.2
15
140
3
(15.6)
3
Mounting screw holes
8-#6-32UNC(x8)
6
30.2 15
45.2
64.2
79.2
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5.25-inch Mirror Drive SCSI Model User's Manual
3. Mounting in the Host Computer
3.1 DIP Switch Settings
Before mounting it in your host computer, check to confirm the DIP switch settings for the Mirror
Drive. Refer to "4. Settings" for the correct configurations of the DIP switches. For default settings,
refer to "Appendix C Factory Default Settings."
Caution
Before setting DIP switches or connecting cables, make sure
the power supply of the host computer has been turned off.
3.2 Mounting in the Host Computer
When mounting in the host computer, use the attached mounting screws and the specified mounting
holes. The mounting screw hole locations are shown in "2.3 Screw Hole Dimensions for Attachment"
An example of a mounting screw hole location is shown below.
Caution
When installing into the host computer, provide sufficient
cooling in order to ensure that the surface temperature of the
drive unit remains below 60 °C.
Do not block the ventilation openings. Without proper
ventilation, the Mirror Drive will malfunction or fail.
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3.3 Connecting Cables
<1> Connect a 4-pin internal power cable, supplied DC +5 V and 12 V.
<2> Connect an internal SCSI cable to the host computer or to other existing SCSI peripherals. If the
Mirror Drive is the last device in the SCSI chain, install the SCSI terminator to the cable.
SCSI connector
Power connector
Caution
If the Mirror Drive is of the last device in the chain or is the
only SCSI device in use, attach a terminator to the SCSI
cable. Using the Mirror Drive without the terminator will result
in malfunctions or failure.
We strongly recommend using the shortest possible SCSI
cable that complies with the SCSI-3 standard.
3.4 Turning on Main Power
Turn on power for the host computer and confirm that the host computer recognizes the Mirror Drive.
Caution
8
Before turning on power for the host computer, confirm that
SCSI IDs are properly set and that the SCSI cable and the
power cable are correctly connected.
5.25-inch Mirror Drive SCSI Model User's Manual
4. Settings
4.1 Configuration DIP Switch 1
Setting DIP switch 1 can be used to select SCSI ID and write cache mode. Setting DIP switch 1 is
located in the lower left. (8-bit DIP switch).
ON OFF
ON
1 2 3 4 5 6 7 8
SW8:Write cache mode
SW4-7:SCSI ID
(Refer to "4.1.2 SCSI ID")
SW1-3:Normal mode
Caution
Before setting DIP switch 1, make sure the power supply for
the host computer has been switched off.
(The above the diagram is set to the factory shipping
defaults.)
Do not change switches 1, 2, and 3.
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4.1.1 Normal Mode ( Do not change )
DIP switch 1 settings switches (1,2,3) are set to mirror mode. Do not change this setting.
Important
Resetting normal mode will result in loss of data.
4.1.2 SCSI ID
Select a SCSI ID (from 0 to 15) using binary DIP switch 1 SW4 through SW7. If you change the
default value, make sure the new SCSI ID is unique.
ON
1
ON OFF
2
3
4
5
6
7
8
ID0 ID1 ID2 ID3
The setting shown above sets the device SCSI ID to "0."
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SCSI ID
ID0
ID1
ID2
ID3
0
OFF
OFF
OFF
OFF
1
ON
OFF
OFF
OFF
2
OFF
ON
OFF
OFF
3
ON
ON
OFF
OFF
4
OFF
OFF
ON
OFF
5
ON
OFF
ON
OFF
6
OFF
ON
ON
OFF
7
ON
ON
ON
OFF
8
OFF
OFF
OFF
ON
9
ON
OFF
OFF
ON
10
OFF
ON
OFF
ON
11
ON
ON
OFF
ON
12
OFF
OFF
ON
ON
13
ON
OFF
ON
ON
14
OFF
ON
ON
ON
15
ON
ON
ON
ON
5.25-inch Mirror Drive SCSI Model User's Manual
4.1.3 Write Cache Mode
This setting sets the write cache mode. If set to the Up position for "ON," the Mirror Drive will signal
completion of command processing to the host computer when data has been written to cache
memory. If set to the Down position for "OFF," the Mirror Drive will signal completion of command
processing to the host computer when data has been written to the drive unit.
Be sure to follow the shutdown procedure specified for the host computer operating system.
Important
Always observe the shutdown procedure specified for the
host computer operating system. In emergencies, wait at
least 10 seconds to be sure both the access indicator and
the drive status indicator have stopped flashing before
shutting off power. Turning off power while the access
indicator or the drive status indicator remains lit may result in
loss of data residing in cache memory.
Caution
If the host computer is running either Windows 95, Windows
98, Windows NT, Windows Me or Windows 2000, both of
which switch off the power supply in synchrony with the
shutdown procedure, be sure to set the write cache mode to
"OFF." Setting write cache mode to "ON" while running either
operating system may lead to data loss.
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4.2 Configuration DIP Switch 2
Setting DIP switch 2 can be used to select single ended mode, auto spin mode. Setting DIP switch 2
is located in the left side. (4-bit DIP switch).
ON OFF ON
1 2 3 4
SW1:Single ended mode
SW3:Auto spin mode
Caution
12
Before setting DIP switch 2, make sure the power supply for
the host computer has been switched off.
(The above the diagram is set to the factory shipping defaults.)
5.25-inch Mirror Drive SCSI Model User's Manual
4.2.1 Single Ended Mode
If this is enabled (set to "ON," the down position), the SCSI interface of the host computer will be set
to single ended mode, regardless of settings at the host computer. If this setting is disabled (set to
"OFF"), the mode set will be LVD or single ended, depending on the status of a host computer or
other SCSI peripherals.
4.2.2 Auto Spin Mode
This setting is for automatically rotating the motor spindle of the HDD when power is turned on . If
this setting is disabled (set to "OFF," the down position), the peak current at the start of the Mirror
Drive may be reduced somewhat, since the spindle motor will not begin rotating at the same time that
the host computer starts up.
In this case, have the host computer issue the START UNIT COMMAND to the Mirror Drive when
power is turned on.
4.3 TERMPWR Switch
TERMPWR setting by this switch. TERMPWR switch is located in the left side. (Jumper pin).
ON
OFF
Caution
Always set this TERMPWR switch to ON.
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4.4 Buzzer Switch
If set to the Up position for "ON", a buzzer will sound if any error is detected. In the event of a drive
unit failure, the buzzer will continue to sound until the failed drive unit is replaced. While the buzzer
switch can be used to stop the buzzer, the setting can only be disabled after the failed drive unit has
been replaced.
Buzzer switch is located in the lower right of front.
Buzzer switch
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ON
ON
BZR
BZR
5.25-inch Mirror Drive SCSI Model User's Manual
5. Status Display
5.1 Indicator
The status of the controller unit and drive units is displayed by the indicator on the front.
5.1.1 Access Indicator
ACC
Green
Normal operation.
Orange
An error has occurred in the controller unit.
Orange
flashing
<1> Both drive units have failed, or the drive unit may not be properly
inserted (if both status indicators are out ).
<2> The user has mistakenly replaced the correctly operating drive unit,
not the one that has failed (if both status indicators are out).
<3> Data rebuilding is in operation (with copy to the target drive unit
indicated by the green light).
Any of the above.
5.1.2 Drive Status Indicator
1
2
Green
Data rebuilding copied to drive unit 1 is operation. (1)
Orange
<1> Drive unit 1 has failed.
<2> Drive unit 1 has reset. (2)
Green
Data rebuilding copied to drive unit 2 is operation. (1)
Orange
<1> Drive unit 2 has failed.
<2> Drive unit 2 has reset. (2)
Note:
(1) Drive Status Indicator will go out after data rebuilding.
(2) In the event of reset, the buzzer will not beep.
Important
If the drive status indicator light orange, immediately replace
the specified drive unit. Leaving the Mirror Drive with a failed
drive unit will result in data loss if the other drive unit fails.
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5.1.3 Buzzer
If this is set to "ON," in the event of a failure, the buzzer will beep at the interval specified below.
When drive unit 1 has failed
Buzzer
beep ................................................ beep ............
3.2 s
0.3 s
When drive unit 2 has failed
Buzzer
beep,beep ............................................ beep,beep ...
3.1 s
0.3 s
0.3 s
0.3 s
When both drive units have failed
Buzzer
beep,beep,beep,beep,beep,beep ...
0.1 s
0.1 s
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5.25-inch Mirror Drive SCSI Model User's Manual
5.2 External Output Signal
The output signal can be transmitted to monitor the detected status externally. The Mirror Drive has
two types of signals; a status output signal and an external LED output signal. The connectors for
these signals are shown in the figure below.
Status bit connector
External LED connector
5.2.1 Status Output Signal
Status output is transmitted as a 3-bit signal.
For detail layouts and electrical specifications for the status bit connector pins, refer to "Appendix
A.2.1 Status Output Signal."
5.2.2 External LED Output Signal
The drive status indicators of the Mirror Drive, green and orange signals for each drive unit, can be
monitored externally in the same manner. These connections and settings will permit transmission of
these signals to remote LEDs. For detail layouts and electrical specifications for the external LED
connector pins, refer to "Appendix A.2.2 External LED Output Signal."
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6. Removal and Replacement
If the Mirror Drive fails, the access indicator will light or flash orange, while the drive status indicator
will light orange.
If buzzer switch is enabled, the buzzer will continue to sound an alert.
Determination of removal and replacement must account for these status/failure indications.
6.1 Troubleshooting
Access
indicator
Drive status indicator
Mirror Drive status and measures.
Drive unit 1
Drive unit 2
---
---
---
Orange
flashing
OFF
Green
Rebuilding data from drive unit 1 to drive unit 2.
(Normal operation)
Orange
flashing
Green
OFF
Rebuilding data from drive unit 2 to drive unit 1.
(Normal operation)
---
Orange
---
To confirm the connect status of drive unit 1, remove and
reinsert drive unit 1 while power is on. If recovery does not
occur, replace drive unit 1.
---
---
Orange
To confirm the connect status of drive unit 2, remove and
reinsert drive unit 2 while the power is on. If recovery does
not occur, replace drive unit 2.
Orange
---
---
Controller unit failure. Replace the controller unit with a new
controller unit.
OFF
OFF
OFF
Check the condition from of the power supply status. If not
recovered, replace the controller unit with a new controller
unit.
Orange
flashing
OFF
OFF
Check the condition of both drive units. If not recovered,
replace the controller unit with a new controller unit.
Other lit or flashing indicator.
Normal operations.
Contact your distributor.
--- : Normally off, or light, or flashing when accessed. If replacing the drive unit does not fix the
problem, replace the controller unit with a new controller unit.
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5.25-inch Mirror Drive SCSI Model User's Manual
6.2 Replacing Drive Units
If one of the drive units fails, the Mirror Drive will continue to function, maintaining data integrity
without requiring you to reboot your host computer. When the failed drive unit is replaced with a new
drive unit, data rebuilding will begin automatically.
When replacing a drive unit, check to be sure that the drive status indicator lights orange.
Important
Before replacing the failed drive unit, be sure to prepare the
drive unit designated by ADTX as described in "Appendix D
Replacement Parts. " Do not replace with HDDs other than
the designated model, even if the capacity, manufacturer, or
model numbers on the label are same. Using unauthorized
HDD will result in malfunction or damage. The warranty does
not cover any damages resulting from replacement with
non-specified HDD, and ADTX will not be liable for any
consequences of using identified HDD.
If the drive status indicator light orange, immediately replace
the specified drive unit with a new drive unit. Leaving the
Mirror Drive with a single operating drive unit will result in
data loss if the other drive unit fails.
Before handling the controller unit or drive unit while
replacing the drive unit, touch a metal object, such as the
metal enclosure of the host computer, to discharge static
electricity from your body.
Caution
Avoid subjecting the drive unit or controller unit to vibrations
or shock when replacing. Subjecting the drive unit or
controller unit to vibration or shock may result in malfunction
or failure.
Do not insert hands or tools into empty slots, which may lead
to electrical shock or malfunctions.
6.2.1 Replacing a Drive Unit
● Replacement Procedure (with power on)
1. Prepare the new drive unit specified in "Appendix D Replacement Parts."
2. Confirm correct identification of the failed drive unit by the drive status indicator or buzzer.
3. Turn the key of the bezel clockwise, remove a lock, and open the bezel.
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4. Remove the screw with the drive unit intended to replace in the left side.
Caution
The drive unit cannot remove when the screw for the drive
unit is fixed.
5. Carefully pull out the failed drive unit from the Mirror Drive.
(E.g.) When drive unit 1 failed
6. Insert to slide the new drive unit firmly to the backplane with your both hands.
(E.g.) When drive unit 1 failed
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5.25-inch Mirror Drive SCSI Model User's Manual
7. Tighten the screw with the designated torque (0.29 Nm Recommended).
Caution
Do not tighten the screw in case of improper connection.
Misalignment may lead to malfunction.
8. Close a bezel and lock a key.
9. In seconds, data rebuilding will start, while the drive status indicator for the replaced drive unit
lights green. The drive status indicator for the correctly functioning drive unit will not light. The
access indicator will flash orange.
Important
Do not remove the drive unit while rebuilding data.
10. When data rebuilding is complete, the drive status indicator will go out.
11. If the drive status indicator for the replaced drive unit does not turn green or turns orange once
again, repeat the procedure, starting with step 2.
Important
If you mistakenly replace the correctly functioning drive unit,
the drive status indicator for both drive units will not light.
Then the access indicator will flash orange. The host
computer will be unable to operate the Mirror Drive.
In this case, turn off the host computer. Replace the failed
drive unit with the new drive unit, and replace the correctly
functioning drive unit. Turning on the host computer will begin
data rebuilding.
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● Replacement Procedure (with power off)
1. Prepare the new drive unit specified in "Appendix D Replacement Parts."
2. Confirm the identify of the failed drive unit by the drive status indicator or buzzer.
3. Turn off the host computer.
4. Turn the key of the bezel clockwise, remove a lock, and open the bezel.
5. Remove the screw with the drive unit intended to replace in the left side.
Caution
The drive unit cannot remove when the screw for the drive
unit is fixed.
6. Carefully pull out the failed drive unit from the Mirror Drive.
(E.g.) When drive unit 1 failed
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5.25-inch Mirror Drive SCSI Model User's Manual
7. Insert to slide the new drive unit firmly to the backplane with your both hands.
(E.g.) When drive unit 1 failed
8. Tighten the screw with the designated torque (0.29 Nm Recommended).
Caution
Do not tighten the screw in case of improper connection.
Misalignment may lead to malfunction.
9. Close a bezel and lock a key.
10. Turn on the host computer.
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11. In seconds, data rebuilding will start, while the drive status indicator for the replaced drive unit will
light green. The drive status indicator for the correctly functioning drive unit will not light. The
access indicator will flash orange.
Important
Do not remove the drive unit while data is rebuilding.
12. When data rebuilding is complete, the drive status indicator will go out.
13. If the drive status indicator for the replaced drive unit does not turn green or turns orange once
again, repeat the procedure, starting with step 2.
Important
24
If you mistakenly replace the correctly functioning drive unit,
the drive status indicator for both drive units will not light.
Then the access indicator will flash orange. The host
computer will be unable to operate the Mirror Drive.
In this case, turn off the host computer. Replace the failed
drive unit with the new drive unit, and replace the correctly
functioning drive unit. Turning on the host computer will begin
data rebuilding.
5.25-inch Mirror Drive SCSI Model User's Manual
6.2.2 Replacing Both Drive Units
Important
Because this is an emergency recovery procedure, data
corruption may occur.
To avoid further data loss, back up all important data stored
on the Mirror Drive to a suitable storage medium, such as
tape drive or MO drive.
1. Prepare the new drive unit specified in "Appendix D Replacement Parts."
2. Turn off the host computer.
3. Turn the key of the bezel clockwise, remove a lock, and open the bezel.
4. Remove the screw with the drive unit intended to replace in the left side.
Caution
The drive unit cannot remove when the screw for the drive
unit is fixed.
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5. Carefully pull out the failed drive unit from the Mirror Drive.
(E.g.) When drive unit 1 failed first
6. Turn on the host computer.
7. Confirm that the host computer recognizes the Mirror Drive.
8. After confirming that the host computer recognizes the Mirror Drive, insert to slide the new drive
unit firmly to the backplane with your both hands.
(E.g.) When drive unit 1 failed
9. In seconds, data rebuilding will start, while the drive status indicator for the replaced drive unit will
light green. The drive status indicator for the correctly functioning drive unit will not light. The
access indicator will flash orange.
Important
Do not remove the drive unit while data is rebuilding.
10. When data rebuilding is complete, the drive status indicator will go out. Turn off the host
computer.
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5.25-inch Mirror Drive SCSI Model User's Manual
11. Carefully pull out the failed other drive unit from the Mirror Drive.
(E.g.) When drive unit 2 was the next to fail
12. Insert to slide the new drive unit firmly to the backplane with your both hands.
(E.g.) When drive unit 2 was the next to fail
13. Tighten the screw with the designated torque (0.29 Nm Recommended).
Caution
Do not tighten the screw in case of improper connection.
Misalignment may lead to malfunction.
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14. Close a bezel and lock a key.
15. Turn on the host computer.
16. In seconds, data rebuilding will start, while the drive status indicator for the replaced drive unit will
light green. The drive status indicator for the correctly functioning drive unit will not light. The
access indicator will flash orange.
Important
Do not remove the drive unit while data is rebuilding.
17. When data rebuilding is complete, the drive status indicator will go out.
18. If the drive status indicator for the replaced drive unit does not turn green or turns orange once
again, repeat the procedure, starting with step 2.
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5.25-inch Mirror Drive SCSI Model User's Manual
6.3 Replacing the controller unit
If the access indicator remains light orange, or the drive status indicator light orange despite
replacement of the drive unit, the controller unit may be defective. Replace the controller unit
immediately. Replace the controller unit with a new controller unit while power is off. There are two
replacement procedures, depending on the condition of the drive unit, as follows:
<1> If both drive units are function normally:
Transfer both drive units to the new controller unit.
Ensure that each drive unit is inserted into the appropriate drive bays.
<2> If one drive unit fails:
Transfer only the correctly functioning drive unit to the new controller unit.
Before replacing controller units, check to confirm that the
host computer has been turned off.
Caution
Before handling the controller unit or drive unit while
replacing the controller unit, touch a metal object, such as
the metal enclosure of the host computer, to discharge static
electricity from your body.
Avoid subjecting the drive unit or controller unit to vibrations
or shock when replacing. Subjecting the drive unit or
controller unit to vibration or shock may result in malfunction
or failure.
Do not insert hands or tools into empty slots, which may lead
to electrical shock or malfunctions.
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6.3.1 Replacing the Controller Unit (with both drive units functioning normally)
● Replacement Procedure
1. Prepare the new controller unit specified in "Appendix D Replacement Parts."
2. Turn off the host computer.
3. Disconnect the SCSI cable and 4-pin internal power cable and remove the Mirror Drive from the
host computer.
Caution
When replacing controller units, place the antistatic bag in
which this product was originally packed on a flat, level
surface. Work on the Mirror Drive in this area.
4. Turn the key of the bezel clockwise, remove a lock, and open the bezel.
5. Remove the screw with the drive unit intended to replace in the left side.
Caution
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The drive unit cannot remove when the screw for the drive
unit is fixed.
5.25-inch Mirror Drive SCSI Model User's Manual
6. Carefully pull out the failed drive unit from the Mirror Drive.
7. Setting the DIP switch 1 and DIP switch 2 of the controller unit for exchange to the same setting as
the DIP switch of the failed controller unit.
DIP switch 2
DIP switch 1
location of DIP switch 1 and DIP switch 2
8. Insert the drive unit into the same numbered bay. Insert to slide the drive unit firmly to the
backplane with your both hands.
Drive unit number
Drive unit number display location
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Insert drive unit 1 Insert drive unit 2
9. Tighten the screw with the designated torque (0.29 Nm Recommended).
Caution
Do not tighten the screw in case of improper connection.
Misalignment may lead to malfunction.
10. Close a bezel and lock a key.
11. Mount the Mirror Drive in the host computer and firmly connect the SCSI cable and 4-pin internal
power cable.
12. Turn on the host computer.
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5.25-inch Mirror Drive SCSI Model User's Manual
6.3.2 Replacing the Controller Unit (with one drive unit failed)
With the controller unit failed, you cannot see if the drive units are functioning correctly. Check first
the condition of the drive units, and follows the procedure below.
Important
When the one drive unit failed, exchange a drive unit
promptly.
● Unit Replacement Procedure
1. Prepare the new controller unit in "Appendix D Replacement Parts."
2. Turn off the host computer.
3. Disconnect the SCSI cable and 4-pin internal power cable and remove the Mirror Drive from the
host computer.
Caution
When replacing controller units, place the antistatic bag in
which this product was originally packed on a flat, level
surface. Work on the Mirror Drive in this area.
4. Turn the key of the bezel clockwise, remove a lock, and open the bezel.
5. Remove the screw with the drive unit intended to replace in the left side.
Caution
The drive unit cannot remove when the screw for the drive
unit is fixed.
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6. Carefully pull out the failed drive unit from the Mirror Drive.
7. Setting the DIP switch 1 and DIP switch 2 of the controller unit for exchange to the same setting as
the DIP switch of the failed controller unit.
DIP switch 2
DIP switch 1
location of DIP switch 1 and DIP switch 2
8. Insert the correctly functioning drive unit into the same numbered bay.
Insert to slide the drive unit firmly to the backplane with your both hands.
Drive unit number
Drive unit number display location
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5.25-inch Mirror Drive SCSI Model User's Manual
(E.g.) When drive unit 1 is normal
9. Close a bezel and lock a key.
10. Mount the Mirror Drive in the host computer. Firmly connect the SCSI cable and 4-pin internal
power cable.
11. Turn on the host computer. Confirm that the host computer recognizes the Mirror Drive. If the
drive unit inserted in the controller unit for exchange is normal, it will start only in the drive unit.
(The drive status indicator of a drive unit which is not inserted will light orange.)
12. Turn the key of the bezel clockwise, remove a lock, and open the bezel.
13. Insert to slide the new drive unit firmly to the backplane with your both hands.
(E.g.) When replacing drive unit 2.
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14. In seconds, data rebuilding will start, while the drive status indicator for the replaced drive unit will
light green. The drive status indicator for the correctly functioning drive unit will not light. The
access indicator will flash orange.
Important
Do not remove the drive unit while data is rebuilding.
15. When data rebuilding is complete, the drive status indicator will go out.
16. Tighten the screw with the designated torque (0.29 Nm Recommended).
Caution
Do not tighten the screw in case of improper connection.
Misalignment may lead to malfunction.
17. Close a bezel and lock a key.
18. If the drive status indicator for the replaced drive unit does not turn green or turns orange once
again, repeat the procedure, starting with step 2.
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5.25-inch Mirror Drive SCSI Model User's Manual
6.4 Other problems
If the problem persists even after you replace the drive unit or the controller unit, please contact your
distributor.
6.5 Data Rebuilding
If a failed drive unit was correctly replaced, data rebuilding (the copying of all data on the correctly
functioning drive unit to the replaced new drive unit) will start automatically.
During data rebuilding, the drive status indicator for the correctly functioning drive unit will light green.
The drive status indicator for the replaced drive unit will light orange.
If one of the drive units fails, the Mirror Drive will continue to function, maintaining data integrity.
Caution
Do not turn off the host computer while the Mirror Drive is
rebuilding data, which may result in loss of data or failure.
When the correctly functioning drive unit fails during data reconstruction, the Mirror Drive omits copy
of bad the sector and continues to reconstruct the remaining data. These skipped sectors will no
longer be readable. In order to avoid copying incorrect data, the data pattern of an ECC error is
written in the replaced drive unit. This function is named "Skip Reconstruction." When data rebuilding
is complete, becomes normal mode. The drive status indicator for the correctly functioning drive unit
will light orange and the access indicator will not light.
Important
If the data recovery process skips errors during data
rebuilding, then the data on those sectors will be lost.
It is recommended you make periodic backups.
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Appendix A Specifications
A. 1 Product Specification
Model name
AXRA-N402S
RAID levels
1
Storage capacity
40 GB
Number of LBA
80,414,080
Number of Cylinders
79,775
Number of Heads
16
Sectors
63
Host interface
Ultra Wide SCSI (LVD or SE)
Data transfer rate (max.)
Number of HDDs
2
External dimensions
Weight (max.)
Operational
environment
(1)
146.0 mm (W) x 219.6 mm (L) x 81.9 mm (H)
2.8 Kg
Temperature
Humidity
Voltage (Vcc)
In operation 5 to 45 °C (4)
Not in operation -40 to 65 °C
In operation 8 to 90%
Not in operation 5 to 95%
4.85 to 5.25 VDC / 11.15 to 13.20 VDC
Power supply ripple (2) (max.)
Power startup time (3)
Power
consumption
40 MB/s
100 mV p-p (0 to 20 MHz)
5 to 100 ms
Startup (max.)
3.2 A (5 VDC) / 3.6 A (12 VDC)
Idle (max.)
1.5 A (5 VDC) / 0.8 A (12 VDC)
Read/Write (max.)
1.9 A (5 VDC) / 1.5 A (12 VDC)
Note:
(1): With no condensation.
(2): Including startup time.
(3): Time until Vcc reaches 4.85 V and 11.15 V.
(4): When mounting in your host computer, provide sufficient cooling to keep the surface temperature
of the drive unit below 60 °C.
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5.25-inch Mirror Drive SCSI Model User's Manual
A.2 External Output Signal Specifications
A.2.1 Status Output Signal
This table shows the pin configurations, status definitions, internal circuitry, electrical specifications,
and connector specifications for the status output signal.
The connector signal pins are configured as follows:
Pin Number
Signal
Pin configuration
1
GND
2
VCC
3
Status bit 2
4
Status bit 1
5
Status bit 0
6
GND
7
Reserved
8
GND
8642
7531
Status output is transmitted in 3-bit signals, as follows:
Number
Status bit 2
Status bit 1
Status bit 0
0
1
2
3
4
5
6
7
L
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
Status
Normal operation
Drive unit 1 has failure
Drive unit 2 has failure
Data rebuilding
Controller unit failure (1)
Reserved
Mirror Drive startup processing
Initializing
H: TTL level output high.
L: TTL level output low.
Note:
(1) The following may indicate damage to the controller unit.
- If both drive units fail to power on.
- If both drive units are properly connected, with power on
- If the correctly functioning drive unit is erroneously replaced, rather than the drive unit that failed.
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The internal circuitry of status output signals indicate as follows:
+5 VDC
+5 VDC
10 KΩ
10 KΩ
10 KΩ
200 mA Fuse
Status bit
connector
Pin1
Pin2
Status bit 2
Pin3
Status bit 1
Pin4
Pin5
Status bit 0
LS06
+5 VDC
Pin6
10 KΩ
Pin7
Pin8
Status output signal uses LS06 (open corrector).
Each output has a 10 KΩpull-up resistor.
Connector specifications
Mirror Drive header
External connectors – connector side
(recommended)
External connectors – connector crimp
contacts (recommended)
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Part name
Manufacturer
DF11-8DP-2DSA
HIROSE Electric Co., Ltd.
DF11-8DS-2C
HIROSE Electric Co., Ltd.
DF11-2428SCF/SC
HIROSE Electric Co., Ltd.
5.25-inch Mirror Drive SCSI Model User's Manual
A.2.2 External LED Output Signal
This table shows the pin configuration, status definitions, external connection circuit diagram,
electrical specifications, and connector specifications for the external LED connector.
The connector signal pins are configured as follows:
Pin Number
Signal
1
Drive unit 1 green LED
2
GND
3
Drive unit 1 red LED
4
Drive unit 2 green LED
5
GND
6
Drive unit 2 red LED
Pin configuration
1
3
5
2
4
6
Output signals and drive status indicators Mirror Drive of correspond as below.
External LED output signal
Mirror Drive – Drive status indicators
Pin 1
Pin 3
Pin 4
Pin 6
Drive unit 1 green LED
ON
OFF
OFF
OFF
Drive unit 1 orange LED
ON
ON
OFF
OFF
Drive unit 2 green LED
OFF
OFF
ON
OFF
Drive unit 2 orange LED
OFF
OFF
ON
ON
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The internal circuitry of external LED output signal indicate as follows:
330 Ω
Drive unit 1 green LED
Pin 1
Pin 2
330 Ω
Pin 3
Drive unit 1 red LED
330 Ω
Pin 4
Drive unit 2 green LED
Source driver
ON: +5 VDC
OFF: Open
Pin 5
330 Ω
Pin 6
Drive unit 2 red LED
External LED output signal electrical specifications. (The signal pins 1, 3, 4, 6)
Source current (output: High)
Caution
Max. 15 mA
The output signal voltage will vary with internal control
resistance.
Connector specifications
Part name
Manufacturer
DF11-6DP-2DS22
HIROSE Electric Co., Ltd.
External connectors – connector side
(recommended)
DF11-6DS-2C
HIROSE Electric Co., Ltd.
External connectors – connector crimp
contacts (recommended)
DF11-2428SCF/SC
HIROSE Electric Co., Ltd.
Mirror Drive header
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5.25-inch Mirror Drive SCSI Model User's Manual
Appendix B Accessories
5.25-inch Mirror Drive SCSI Model AXRA-N Series is shipped with following accessories.
y 5.25-inch Mirror Drive SCSI Model AXRA-N Series user's manual. (This manual)
y Mounting screws. (x4)
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Appendix C Factory Default Setting
The Mirror Drive's factory default setting is as follows:
Setting DIP switch 1
Factory default setting
Setting
Normal mode
DIP switch No.
DIP switch setting
1
OFF
2
ON
3
OFF
4
OFF
5
OFF
6
OFF
7
OFF
8
ON
Mirror mode
SCSI ID
0
Write cache mode
ON
Setting DIP switch 2
Factory default setting
Setting
DIP switch No.
DIP switch setting
Single ended mode
OFF
1
OFF
Reserved
OFF
2
OFF
Auto spin mode
ON
3
ON
Reserved
OFF
4
OFF
Setting TERMPWR switch
Factory default setting
TERMPWR switch
Setting
Switch setting
ON
ON
Setting buzzer switch
Factory default setting
Buzzer switch
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Setting
Switch setting
ON
ON
5.25-inch Mirror Drive SCSI Model User's Manual
Appendix D Replacement Parts
The following are supplied as user-replaceable parts.
Replacement Parts
Part name
Part number
40 GB drive unit
A202760
Replacement drive unit for AXRA-N402S.
Controller unit
A202749
Replacement controller unit for AXRA-N series
SCSI.
Part name
Part number
SCSI cable
(With
terminator)
A202790
Option
SCSI cable for AXRA-N402S. (With terminator)
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Information
For more information about this product, please contact your distributor.
Distributor's information
- Product Records
Model Name :
Model / Type :
Serial Number :
- Manufacturer
This product is manufactured by
Storage Vision Co., Ltd. in Japan.
http://www.str-v.com
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