eSATA/USB 2.0 2-BAY RAID SYSTEM
2-bay RAID Systems
for 3.5 ” SATA HDD
Easy RAID Storage Management for High Productivity
USB 2.0
eSATA/USB 2.0
USB2.0/FireWire800
User’s Manual
This User’s Manual provides instructions
on assembly and usage of the 3 models
Rev.
Rev.0607
Table of Contents
GENERAL INFORMATION
COPYRIGHT
NOTICES AND CLASSIFICATIONS
CONTACT US
4
4
4
4
INTRODUCTION
FEATURES
5
5
PRECAUTIONS FOR THE RAID SYSTEM
6
USB 2.0 2-BAY RAID SYSTEM
SYSTEM REQUIREMENTS
PACKAGE CONTENTS
USB 2.0 2-BAY RAID SYSTEM VIEWS
FRONT VIEW
REAR VIEW
INSTALLING/REPLACING THE HARD DRIVES IN THE RAID SYSTEM
SETTING THE RAID MODE
CONNECTING THE RAID SYSTEM TO A COMPUTER
SAFE REMOVAL OF THE RAID SYSTEM
LED INDICATORS
SYSTEM LED x 1
HDD LED x 2
REBUILD
ONLINE REBUILD
REBUILD EXISTING DATA TO A BACKUP HDD
HOT SWAP
EXTERNAL BOOTUP
7
7
7
8
6
6
9
13
15
17
17
17
17
18
18
18
19
19
eSATA/USB 2.0 2-BAY RAID SYSTEM
SYSTEM REQUIREMENTS
PACKAGE CONTENTS
eSATA/USB 2.0 2-BAY RAID SYSTEM VIEWS
FRONT VIEW
REAR VIEW
INSTALLING/REPLACING THE HARD DRIVES IN THE RAID SYSTEM
SETTING THE RAID MODE
CONNECTING THE RAID SYSTEM TO A COMPUTER
SAFE REMOVAL OF THE RAID SYSTEM
LED INDICATORS
SYSTEM LED x 1
HDD LED x 2
REBUILD
ONLINE REBUILD
REBUILD EXISTING DATA TO A BACKUP HDD
HOT SWAP
EXTERNAL BOOTUP
eSATA PCI EXPRESS CARD INSTALLATION
SYSTEM REQUIREMENTS
20
20
20
21
19
19
22
26
27
29
29
29
29
30
30
30
31
31
32
32
2
HARDWARE INSTALLATION
DRIVER INSTALLATION
VERIFY DRIVER INSTALLATION
32
33
33
USB 2.0/FIREWIRE 800 2-BAY RAID SYSTEM
SYSTEM REQUIREMENTS
PACKAGE CONTENTS
USB 2.0/FIREWIRE 800 2-BAY RAID SYSTEM VIEWS
FRONT VIEW
REAR VIEW
INSTALLING/REPLACING THE HARD DRIVES IN THE RAID SYSTEM
SETTING THE RAID MODE
CONNECTING THE RAID SYSTEM TO A COMPUTER
SAFE REMOVAL OF THE RAID SYSTEM
LED INDICATORS
SYSTEM LED x 1
HDD LED x 2
REBUILD
ONLINE REBUILD
OFFLINE REBUILD
REBUILD EXISTING DATA TO A BACKUP HDD
HOT SWAP
EXTERNAL BOOTUP
35
35
35
36
34
34
37
41
43
45
45
45
45
46
46
46
46
47
47
RAID SYSTEM and MODES
JBOD
SPANNING
STRIPING
MIRRORING
48
48
48
49
50
APPENDIX: SPECIFICATIONS
51
3
GENERAL INFORMATION
COPYRIGHT
Copyright @ 2008 ONNTO Corporation. All rights reserved. No part of this
publication may be reproduced, stored in a retrieval system, or transmitted in any
form or by any means, electronic, mechanical, photocopying, recording or
otherwise, without the prior written consent of ONNTO Corporation.
The product information provided in this manual is subject to change without prior
notice and does not represent a commitment on behalf of the vendor. The vendor
assumes no liability or responsibility for any errors that may appear in this manual.
NOTICES AND CLASSIFICATIONS
FCC-B Radio Frequency Interference Statement
This device complies with Part 15 of the FCC rules. Operation is subject to the
following two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that
may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications.
CONTACT US
We are committed to offer economical, high-quality connectivity and storage
enclosure solutions to the market. Your questions, inquiries or comments are
welcomed.
For Technical Support, please go to our website at www.onnto.com.tw
ONNTO Corporation
3F, No. 60, Lane 321, Yang Guang St.,
Nei Hu, Taipei 114 Taiwan
Tel: +886-2-8797-8868
Fax: +886-2-8797-4801
Email: question@onnto.com.tw
4
INTRODUCTION
Thank you for purchasing the 3.5” SATA HDD 2-bay RAID System. The 2-bay
RAID System provides massive storage capacity and advanced RAID
configuration options in a desktop storage device. The Mode switches allow
easy configuration of Striping (RAID 0), Spanning, Mirroring (RAID 1) and JBOD
RAID Modes.
FEATURES
Provides Striping, Spanning, Mirroring, and JBOD RAID Modes for effective
storage management
Supports easy RAID Mode configuration with convenient Mode switches
Offers easy monitoring of system status via LED indicators
Dissipates heat efficiently with aluminum housing
Maximizes airflow and product life with a silent, durable fan
Increases data transfer speed with the Serial ATA technology
Supports hot-plug and HDD hot-swap
Enables flexible eSATA, USB 2.0 or 1394b connectivity
Any loss, corruption, or destruction of data is the sole responsibility of the
user of the RAID System. Under no circumstances will the manufacturer be held
liable for the recovery or restoration of any data.
This User’s Manual provides instructions on assembly and usage of the following
products:
USB 2.0 2-bay RAID System
eSATA/USB 2.0 2-bay RAID System
USB 2.0/FireWire 800 2-bay RAID System
Please thoroughly read and follow the instructions provided in this manual.
Failure to do so may result in damage to the RAID System, and any or all of the
connected devices.
5
PRECAUTIONS FOR THE RAID SYSTEM
♦ The main circuit board of the RAID System is susceptible to static
electricity. Proper grounding is required to prevent electrical damage to
the RAID System or other connected devices, including the computer host.
Always place the RAID System on a smooth surface and avoid all
dramatic movement, vibration and percussion.
♦ Do NOT allow water to enter the RAID System.
♦ Installation of additional equipment in the host computer may be required.
Visit our website to download the latest product information updates.
♦ Do NOT attempt to service this unit yourself. Opening or removing the
back cover will expose you to dangerous voltages or other hazards.
♦ Do NOT block the front and rear ventilation. Proper airflow is required to
ensure reliable operation and to prevent overheating.
♦ Do unplug the RAID System from the electrical outlet when not in use to
provide an ecological friendly environment.
♦ Use only the power supply cable provided with the RAID System.
6
USB 2.0 2-BAY RAID SYSTEM
SYSTEM REQUIREMENTS
PC
266MHz or faster CPU (Microsoft Vista requires a minimum 800MHz CPU)
64MB of RAM (Microsoft Vista requires a minimum 512MB of RAM)
Microsoft Windows 2000, XP, 2003, or Vista
One available USB 2.0 port
MAC
PowerPC or Intel Core Duo processor
64MB of RAM (Mac OS X 10.4 requires 256MB of RAM)
Mac OS 10.2 or higher (PowerPC) or Mac OS X 10.4 (Intel)
One available USB 2.0 port
SATA compatible hard drive is required for the RAID System. Once the
HDDs are formatted, the actual available storage capacity can vary depending on
selected operating environment (normally 5-10 % less).
PACKAGE CONTENTS
2-bay RAID System
USB Type A to mini-B Cable
AC Adapter
Fastening Screws x 8
Quick Start Guide
RAID System
USB Cable
AC Adapter
Fastening Screw
Quick Start Guide
Please keep all package contents and packaging material in the event that
the product must be returned.
7
USB 2.0 2-BAY RAID SYSTEM VIEWS
FRONT VIEW
1.
2.
3.
1
System LED
Indicator
HDD LED Indicator
HDD Trays
2
3
4
REAR VIEW
4.
Quick HDD release
levers
5.
USB mini-B port
6.
Reset Button
7.
Mode Switch
8.
Power Switch
9.
DC IN
10. Fan
11. Lock Port
5
6
8
7
9
10
11
8
INSTALLING/REPLACING THE HARD DRIVES IN THE RAID
SYSTEM
When the HDD is not installed, simply slide the tray out of the drive bay without
using the lever and be cautious when lifting the RAID System with the trays
inside. When the HDD is installed, after lifting the level, the tray should easily be
released from the drive bay.
1.
Lift the quick HDD release lever to release the selected HDD tray from the
desired drive bay.
2.
Slide the HDD tray out of the drive bay.
9
Due to the design tolerance of the SATA HDD connector, however, the
HDD tray may not always be released from the drive bay easily, or may not be
released at all. If this occurs, carefully slide the HDD tray out of the drive bay
after lifting the quick HDD release lever.
3.
When removed, the HDD tray appears as shown below.
4.
Carefully slide the HDD into the drive tray.
10
5.
Ensure that the interface connectors are oriented toward the rear of the
drive tray.
Data & power connectors
are on this side.
6.
Locate the screws included in the package. Ensure that the screw guides on
the side of the HDD are aligned with the openings on the side of the drive
tray. Fasten the HDD to the drive tray by inserting and tightening the
screws.
11
7.
Align the drive tray with the guide rails and slide it into the drive bay. Ensure
that the tray is completely inserted and that the interface connectors are
properly seated.
In most cases, you would need to firmly push the trays to a close until a
“click” sound is heard.
8.
Now, the RAID System is ready for connection to a host
12
SETTING THE RAID MODE
Deleting the current partition prior to changing RAID modes is highly
recommended.
For the USB 2.0 model, after deleting the current partition and turning “off” the
power switch, set the new RAID mode and power the RAID system “on” again.
The RAID system can then be used with the updated RAID mode.
Pressing the reset button is not required.
1.
Power “off” the RAID System.
2.
Use a small, flat-blade screwdriver to select the RAID Mode.
2
1
13
3.
After setting the new RAID mode, power the RAID System “on”.
3
USB 2.0 RAID Modes:
Changing the RAID Mode deletes all data stored on the device. If you have
saved data in the drives, backup all data before changing the RAID Mode.
14
CONNECTING THE RAID SYSTEM TO A COMPUTER
Complete the following steps to connect the RAID System to a host computer.
1.
Connect the AC/DC power adapter.
2.
Insert both ends of the USB 2.0 cable into the corresponding port of the
RAID System and the host.
15
2.
Turn the power switch to the “on” position.
3.
When connected, the System LED lights will become steadily orange.
You are now ready to begin using your RAID System!
16
SAFE REMOVAL OF THE RAID SYSTEM
Safe removal of the RAID System from the host controller requires the steps.
First, you would need to eject the device from your host controller. Next, press
the “off” button on the RAID System if necessary.
Most current USB host controllers handle USB devices as external devices,
thus, it is highly recommended that the RAID System be safely removed from the
host.
LED INDICATORS
SYSTEM
HDD 1
Color 1
Color 2
HDD 2
Color 1
Color 2
SYSTEM LED x 1
Indicators
Power on
Power off
Color
Orange
None
HDD LED x 2
Indicators
Disk error
Data access
Disk
Source HDD
rebuild
Target HDD
RAID Mode
Stripe, Span, Mirror, JBOD
Stripe, Span, Mirror, JBOD
Mirror
Mirror
Color 1
Red
None
None
Red
Color 2
None
Flash Blue
Blink Blue
Blink Blue
The difference between a flashing LED and a blinking LED is that flashing
refers to the read/write activity, and blinking refers to slow but regular pulses.
17
REBUILD
In Mirror mode, if one of the HDDs fails and is replaced with a functional HDD,
the RAID System will automatically rebuild the target HDD (the new functional
HDD) with data from the source HDD (the remaining functional HDD) sector by
sector. After the rebuild is completed, data in both HDDs will be identical. The
use of two identical HDDs from the same manufacturer, having the same
capacity and RPM is highly recommended.
When the chipset is processing the Rebuild task, if data is accessed during
this period, the speed of data access is around 2 ~ 3 MB/sec; thus, access of the
HDD during a Rebuild is not recommended.
ONLINE REBUILD
In most cases, Rebuild refers to “Online Rebuild”, meaning the rebuild is initiated
when the RAID System is connected to the host. When the Online Rebuild is
initiated, the RAID System cannot rebuild if it is not connected to the host.
For the USB 2.0 model, it can only support Online Rebuild.
REBUILD EXISTING DATA TO A BACKUP HDD
Due to the Rebuild behavior, the first HDD inserted into one of the HDD trays and
recognized by the RAID System becomes the source HDD. To rebuild existing
data from a source HDD to a backup HDD (target HDD), the source HDD must
first be inserted into one of the two drive bays. After the host detects the source
HDD (in 10 to 15 seconds), and the RAID System indicates the target HDD tray
is empty via the LED disk error light, the target HDD should then be inserted in
the other HDD tray. The RAID System will then recognize the target HDD, the
disk error LED will stop, and the rebuild process will begin automatically. These
actions ensure that the RAID System recognizes the correct source and target
HDDs and to prevent the source data from being overwritten.
The Rebuild Speed of the USB 2.0 Model is 100 GB per hour or 28.4 MB
per second, approximately.
18
HOT SWAP
Hot Swap here refers to HDD Hot Swap (Hard Disk Hot Swap), not True Hot
Swap.
The USB 2.0 model does not support HDD Hot Swap in JBOD or Mirror. It is
also not recommended to perform Hot Swapping in Span or Stripe modes.
Ensure that the RAID System is powered "off" before replacing the HDDs.
HDD Hot Swap (Hard Disk Hot Swap) refers to the ability to add or remove
a device from the host computer without powering “off” the device; the system
automatically recognizes the change after the hot swapping is done. True Hot
Swap refers to the ability to add or remove a device from the host computer
when the data is still accessing.
EXTERNAL BOOTUP
The External Bootup can only work for the USB 2.0 Model under DOS for PC
operating system, and Intel-based CPU for Mac OS.
Please review the Troubleshooting section on our website for more
information.
19
eSATA/USB 2.0 2-BAY RAID SYSTEM
SYSTEM REQUIREMENTS
PC
266MHz or faster CPU (Microsoft Vista requires a minimum 800MHz CPU)
64MB of RAM (Microsoft Vista requires a minimum 512MB of RAM)
Microsoft Windows 2000, XP, 2003, or Vista
One available USB or eSATA port
MAC
PowerPC or Intel Core Duo processor
64MB of RAM (Mac OS X 10.4 requires 256MB of RAM)
Mac OS 10.2 or higher (PowerPC) or Mac OS X 10.4 (Intel)
One available USB or eSATA port
OPTIONAL ACCESSORIES
eSATA PCI, PCI-X, or PCI-Express Card
SATA compatible hard drive is required for the RAID System. Once the
HDDs are formatted, the actual available storage capacity can vary depending on
selected operating environment (normally 5-10 % less).
PACKAGE CONTENTS
2-bay RAID System
USB Type B to A Cable
eSATA Cable
AC Adapter
Fastening Screws x 8
Quick Start Guide
RAID System
USB Cable
eSATA Cable
AC Adapter
Fastening Screw
Quick Start Guide
Please keep all package contents and packaging material in the event that
the product must be returned.
20
eSATA/USB 2.0 2-BAY RAID SYSTEM VIEWS
FRONT VIEW
1
1.
2.
3.
System LED Indicator
HDD LED Indicator
HDD Trays
2
3
REAR VIEW
4
4.
Quick HDD release
levers
5.
Reset Button
6.
Mode Switch
7.
Power Switch
8.
USB Type B Port
9.
eSATA Port
10. DC IN
11. Fan
12. Lock Port
5
7
6
8
10
9
11
12
21
INSTALLING/REPLACING THE HARD DRIVES IN THE RAID
SYSTEM
When the HDD is not installed, simply slide the tray out of the drive bay without
using the lever and be cautious when lifting the RAID System with the trays
inside. When the HDD is installed, after lifting the level, the tray should easily be
released from the drive bay.
1.
Lift the quick HDD release lever to release the selected HDD tray from the
desired drive bay.
2.
Slide the HDD tray out of the drive bay.
22
Due to the design tolerance of the SATA HDD connector, however, the
HDD tray may not always be released from the drive bay easily, or may not be
released at all. If this occurs, carefully slide the HDD tray out of the drive bay
after lifting the quick HDD release lever.
3.
When removed, the HDD tray appears as shown below.
4.
Carefully slide the HDD into the drive tray.
23
5.
Ensure that the interface connectors are oriented toward the rear of the
drive tray.
Data & power connectors
are on this side.
6.
Locate the screws included in the package. Ensure that the screw guides on
the side of the HDD are aligned with the openings on the side of the drive
tray. Fasten the HDD to the drive tray by inserting and tightening the screws.
24
7.
Align the drive tray with the guide rails and slide it into the drive bay. Ensure
that the tray is completely inserted and that the interface connectors are
properly seated.
In most cases, you would need to firmly push the trays to a close until a
“click” sound is heard.
8.
Now, the RAID System is ready for connection to a host.
25
SETTING THE RAID MODE
Deleting the current partition prior to changing RAID modes is highly
recommended.
Due to the chipset of the eSATA/USB 2.0 model, after deleting the current
partition and setting the new RAID mode, the reset button on the right side of the
Mode switch must be pressed in order for the updated RAID mode to take effect.
Pressing the reset button for at least 3 ~ 5 seconds is highly recommended.
1.
Use a small, flat-blade screwdriver to select the RAID mode.
2.
Press the reset button.
1
2
eSATA/USB 2.0 RAID Modes:
JBOD Span Stripe Mirror
Changing the RAID Mode deletes all data stored on the device. If you have
saved data in the drives, backup all data before changing the RAID Mode.
26
CONNECTING THE RAID SYSTEM TO A COMPUTER
Complete the following steps to connect the RAID System to a host computer.
1.
Connect the AC/DC power adapter.
2.
Insert both ends of the eSATA or USB 2.0 cable into the corresponding port
of the RAID System and the host.
Due to compatibility issues, the Silicon Image eSATA host controller is
highly recommended.
27
3.
Turn the power switch to the “on” position.
4.
When connected, the System LED lights will become steadily orange.
The RAID System should only be connected to a host computer via one
interface. Connection of the system to a computer via two or more interfaces
simultaneously is not recommended.
You are now ready to begin using your RAID System!
28
SAFE REMOVAL OF THE RAID SYSTEM
Safe removal of the RAID System from the host controller requires the steps.
First, you would need to eject the device from your host controller. Next, press
the “off” button on the RAID System if necessary.
Most current USB host controllers handle USB devices as external devices;
thus, it is highly recommended that the RAID System be safely removed from the
host if you use USB interface. However if you use eSATA interface, the host,
depending on the eSATA controller, may handle external eSATA HDD devices
as internal HDD devices, if so, safe removal of the RAID System from the host is
unnecessary.
LED INDICATORS
SYSTEM
HDD 1
Color 1
Color 2
HDD 2
Color 1
Color 2
SYSTEM LED x 1
Indicators
Power on
Power off
Color
Orange
None
HDD LED x 2
Indicators
Disk error
Disk error
Data access
Disk rebuild
Source HDD
Target HDD
RAID Mode
Stripe, Span, Mirror
JBOD
Stripe, Span, Mirror, JBOD
Mirror
Mirror
Color 1
Blink Green
None
Green
Green
Blink Green
Color 2
Blink Blue
None
Flash Blue
Blue
Blue
The difference between a flashing LED and a blinking LED is that flashing
refers to the read/write activity, and blinking refers to slow but regular pulses.
29
REBUILD
In Mirror mode, if one of the HDDs fails and is replaced with a functional HDD,
the RAID System will automatically rebuild the target HDD (the new functional
HDD) with data from the source HDD (the remaining functional HDD) sector by
sector. After the rebuild is complete, data in both HDDs will be identical. The
use of two identical HDDs from the same manufacturer, having the same
capacity and RPM is highly recommended.
When the chipset is processing the Rebuild task, if data is accessed during
this period, the speed of data access is around 2 ~ 3 MB/sec; thus, access of the
HDD during a Rebuild is not recommended.
ONLINE REBUILD
In most cases, Rebuild refers to “Online Rebuild”, meaning the rebuild is initiated
when the RAID System is connected to the host. When the Online Rebuild is
initiated, the RAID System cannot rebuild if it is not connected to the host.
For the eSATA/USB 2.0 model, it only supports Online Rebuild.
REBUILD EXISTING DATA TO A BACKUP HDD
Due to the Rebuild behavior, the first HDD inserted into one of the HDD trays and
recognized by the RAID System becomes the source HDD. To rebuild existing
data from a source HDD to a backup HDD (target HDD), the source HDD must
first be inserted into one of the two drive bays. After the host detects the source
HDD (in 10 to 15 seconds), and the RAID System indicates the target HDD tray
is empty via the LED disk error light, the target HDD should then be inserted in
the other HDD tray. The RAID System will then recognize the target HDD, the
disk error LED will stop, and the rebuild process will begin automatically. These
actions ensure that the RAID System recognizes the correct source and target
HDDs and to prevent the source data from being overwritten.
The Rebuild Speed of the eSATA/USB 2.0 Model is 100 GB per hour or
28.4 MB per second, approximately.
30
HOT SWAP
Hot Swap here refers to HDD Hard Disk (Hard Disk Hot Swap), not True Hot
Swap.
The eSATA/USB 2.0 model supports HDD Hot Swap in JBOD or Mirror.
However, since it refers to Hard Disk Hot Swap, it is not recommended to
perform Hot Swapping when the HDD is transferring data. When one HDD is Hot
Swapped, the system will reset while interrupting data transfer and causing data
loss.
HDD Hot Swap (Hard Disk Hot Swap) refers to the ability to add or remove
a device from the host computer without powering off the device; the system
automatically recognizes the change after the hot swapping is done. True Hot
Swap refers to the ability to add or remove a device from the host computer
when the data is still accessing.
EXTERNAL BOOTUP
PC
The External Bootup with different interface:
OS \ Interfaces
Windows
DOS
Linux
USB 2.0
No
Yes
No
eSATA
Yes
Yes
Yes
MAC
The External Bootup varies with different platform and interfaces:
Platform \ Interfaces
Power Mac G3 or older
models
Power PC CPU
Intel-based CPU
eSATA
Mac driver built-in
No driver built-in
No
No
USB 2.0
No
No
Yes
Yes
Yes
No
No
If the computer does not come with eSATA interface and an optional eSATA
card is added, choosing the card that comes with the built-in driver in the
operation system is highly recommended. Please refer to the Troubleshooting
section on our website for more information.
31
eSATA PCI EXPRESS CARD INSTALLATION
Complete the steps provided in this section to install the eSATA PCI Express
Card to use with the eSATA/USB 2.0 RAID System. The eSATA PCI Express
Card provides a host computer with two Windows and Mac compatible eSATA
ports.
SYSTEM REQUIREMENTS
♦
♦
♦
♦
♦
♦
Windows 2000 with Service Pack 4 or later
Windows XP with Service Pack 2 or later
Windows 2003 with Service Pack 1 or later
Mac OS 10.4.x or later
An available PCI-Express slot
CD-ROM or DVD-ROM drive
HARDWARE INSTALLATION
1. Power “off” and unplug your computer.
2. Remove the housing of your computer and locate an available PCI-Express
slot on your motherboard.
3. Insert the card in the available PCI-Express slot. Ensure that the card is firmly
seated in the slot.
4. Replace the housing of your computer.
Screw
System
Frame
PCIExpress
Mounting
Bracket
PCIExpress
32
DRIVER INSTALLATION
In the Windows system, the “Add New Hardware Wizard” will open automatically.
Insert the installation CD included in the package, navigate to and open the
installation file. Follow the provided prompts to complete the driver installation.
For Mac OS, insert the installation CD and locate the Mac driver installation file.
Follow the provided prompts to complete the driver installation.
VERIFY DRIVER INSTALLATION
Windows OS:
1. Right click the My Computer icon on your desktop and choose Manage from
the pop-up menu.
2. Double click Device Manager.
3. Double-click SCSI and RAID controllers.
4. Verify that the SiI 3132 SATALink Controller appears, as shown below.
Windows 2003 and XP:
33
Windows 2000:
Mac OS:
If a driver installation failure error message appears after restarting the computer,
follow the recommendations provided in the error message.
Please refer to User’s Manual for eSATA Host Card on our website.
34
USB 2.0/FIREWIRE 800 2-BAY RAID SYSTEM
SYSTEM REQUIREMENTS
PC
266MHz or faster CPU (Microsoft Vista requires a minimum 800MHz CPU)
64MB of RAM (Microsoft Vista requires a minimum 512MB of RAM)
Microsoft Windows 2000, XP, 2003, or Vista
One available USB 2.0 or IEEE 1394b (FireWire 800) port
MAC
PowerPC or Intel Core Duo processor
64MB of RAM (Mac OS X 10.4 requires 256MB of RAM)
Mac OS 10.2 or higher (PowerPC) or Mac OS X 10.4 (Intel)
One available USB 2.0 or IEEE 1394b (FireWire 800) port
SATA compatible hard drive is required for the RAID System. Once the
HDDs are formatted, the actual available storage capacity can vary depending on
selected operating environment (normally 5-10 % less).
PACKAGE CONTENTS
2-bay RAID System
USB Type A to mini-B Cable
IEEE 1394b (FireWire 800) Cable
AC Adapter
Fastening Screws x 8
Quick Start Guide
RAID System
USB Cable
IEEE 1394b Cable
AC Adapter
Fastening Screw
Quick Start Guide
Please keep all package contents and packaging material in the event that
the product must be returned.
35
USB 2.0/FIREWIRE 800 2-BAY RAID SYSTEM VIEWS
FRONT VIEW
1
1.
2.
3.
System LED Indicator
HDD LED Indicator
HDD Trays
2
3
REAR VIEW
4
4.
Quick HDD release
levers
5.
Reset Button
6.
Mode Switch
7.
FireWire 800 Ports
8.
USB Port
9.
Power Switch
10. DC IN
11. Fan
12. Lock Port
7
5
9
6
8
10
11
12
36
INSTALLING/REPLACING THE HARD DRIVES IN THE RAID
SYSTEM
When the HDD is not installed, simply slide the tray out of the drive bay without
using the lever and be cautious when lifting the RAID System with the trays
inside. When the HDD is installed, after lifting the level, the tray should easily be
released from the drive bay.
1.
2.
Lift the quick HDD release lever to release the selected HDD tray from the
desired drive bay.
Slide the HDD tray out of the drive bay.
37
Due to the design tolerance of the SATA HDD connector, however, the
HDD tray may not always be released from the drive bay easily, or may not be
released at all. If this occurs, carefully slide the HDD tray out of the drive bay
after lifting the quick HDD release lever.
3.
When removed, the HDD tray appears as shown below.
4.
Carefully slide the HDD into the drive tray.
38
5. Ensure that the interface connectors are oriented toward the rear of the
drive tray.
Data & power connectors
are on this side.
6. Locate the screws included in the package. Ensure that the screw guides on
the side of the HDD are aligned with the openings on the side of the drive tray.
Fasten the HDD to the drive tray by inserting and tightening the screws.
39
7. Align the drive tray with the guide rails and slide it into the drive bay. Ensure
that the tray is completely inserted and that the interface connectors are
properly seated.
In most cases, you would need to firmly push the trays to a close until a
“click” sound is heard.
8.
Now, the RAID System is ready for connection to a host.
40
SETTING THE RAID MODE
Deleting the current partition prior to changing RAID modes is highly
recommended.
For the USB 2.0/FireWire 800 model, alternatively, after deleting the current
partition and turning “off” the power switch, set the new RAID mode and power
the RAID system “on” again. The RAID system can then be used with the
updated RAID mode.
Pressing the reset button is not required.
1.
Power “off” the RAID System.
2.
Use a small, flat-blade screwdriver to select the RAID Mode.
2
1
41
3.
After setting the new RAID mode, power the RAID System “on”.
3
USB 2.0/FireWire 800 RAID Modes:
Changing the RAID Mode deletes all data stored on the device. If you have
saved data in the drives, backup all data before changing the RAID Mode.
42
CONNECTING THE RAID SYSTEM TO A COMPUTER
Complete the following steps to connect the RAID System to a host computer.
1.
Connect the AC/DC power adapter.
2.
Insert both ends of the USB 2.0 or FireWire 800 cable into the corresponding
port of the RAID System and the host.
43
3.
Turn the power switch to the “on” position.
4.
When connected, the System LED lights will become steadily orange.
The RAID System should only be connected to a host computer via one
interface. Connection of the system to a computer via two or more interfaces
simultaneously is not recommended.
You are now ready to begin using your RAID System!
44
SAFE REMOVAL OF THE RAID SYSTEM
Safe removal of the RAID System from the host controller requires the steps.
First, you would need to eject the device from your host controller. Next, press
the “off” button on the RAID System if necessary.
Most current USB and 1394b host controllers handle USB and 1394b
devices as external devices; thus, it is highly recommended that the RAID
System be safely removed from the host.
LED INDICATORS
SYSTEM
HDD 1
Color 1
Color 2
HDD 2
Color 1
Color 2
SYSTEM LED x 1
Indicators
Power on
Power off
Color
Orange
None
HDD LED x 2
Indicators
Disk error
Data access
Disk rebuild
Source HDD
Target HDD
RAID Mode
Stripe, Span, Mirror, JBOD
Stripe, Span, Mirror, JBOD
Mirror
Mirror
Color 1
Red
None
None
Red
Color 2
None
Flash Blue
Blink Blue
Blink Blue
The difference between a flashing LED and a blinking LED is that flashing
refers to the read/write activity, and blinking refers to slow but regular pulses.
45
REBUILD
In Mirror mode, if one of the HDDs fails and is replaced with a functional HDD,
the RAID System will automatically rebuild the target HDD (the new functional
HDD) with data from the source HDD (the remaining functional HDD) sector by
sector. After the rebuild is complete, data in both HDDs will be identical. The
use of two identical HDDs from the same manufacturer, having the same
capacity and RPM is highly recommended.
When the chipset is processing the Rebuild task, if data is accessed during
this period, the speed of data access is around 2 ~ 3 MB/sec; thus, access of the
HDD during a Rebuild is not recommended.
ONLINE REBUILD
In most cases, Rebuild refers to “Online Rebuild”, meaning the rebuild is initiated
when the RAID System is connected to the host. When the Online Rebuild is
initiated, the RAID System cannot rebuild if it is not connected to the host.
OFFLINE REBUILD
Due to the chipset, some systems also support an Offline Rebuild function. After
an Offline Rebuild is activated and the RAID System rebuild begins, even if the
RAID System loses connection to the host, the rebuild continues. If the RAID
System is powered off, the RAID System will retain the rebuild status in memory.
When the RAID System is powered “on” again, the rebuild process will resume
from the previous status.
The USB 2.0/FireWire 800 Model supports both Online Rebuild and Offline
Rebuild.
REBUILD EXISTING DATA TO A BACKUP HDD
Due to the Rebuild behavior, the first HDD inserted into one of the HDD trays and
recognized by the RAID System becomes the source HDD. To rebuild existing
data from a source HDD to a backup HDD (target HDD), the source HDD must
first be inserted into one of the two drive bays. After the host detects the source
HDD (in 10 to 15 seconds), and the RAID System indicates the target HDD tray
is empty via the LED disk error light, the target HDD should then be inserted in
the other HDD tray. The RAID System will then recognize the target HDD, the
disk error LED will stop, and the rebuild process will begin automatically. These
actions ensure that the RAID System recognizes the correct source and target
HDDs and to prevent the source data from being overwritten.
The Rebuild Speed of the USB 2.0/FireWire 800 Model is 100 GB per hour
or 28.4 MB per second, approximately.
46
HOT SWAP
Hot Swap here refers to HDD Hot Swap (Hard Disk Hot Swap), not True Hot
Swap.
The USB 2.0/FireWire 800 model does not support HDD Hot Swap in JBOD or
Mirror. It is also not recommended to perform Hot Swapping in Span or Stripe
modes. Ensure that the RAID System is powered "off" before replacing the
HDDs.
HDD Hot Swap (Hard Disk Hot Swap) refers to the ability to add or remove
a device from the host computer without powering off the device; the system
automatically recognizes the change after the hot swapping is done. True Hot
Swap refers to the ability to add or remove a device from the host computer
when the data is still accessing.
EXTERNAL BOOTUP
PC
The External Bootup with different interface:
OS \ Interfaces
Windows
DOS
Linux
USB 2.0
No
Yes
No
IEEE 1394b
No
No
No
MAC
The External Bootup varies by different platforms and interface:
Platform \ Interfaces
USB 2.0
Power Mac G3 or older
models
Power PC CPU
Intel-based CPU
FireWire 800
No
No
No
Yes
Yes
Yes
Please review the Troubleshooting section on our website for more
information.
47
RAID SYSTEM and MODES
A Redundant Array of Independent (or Inexpensive) Disks (RAID) is a system
that utilizes multiple hard drives to share or replicate data among the disks. The
benefit, depending on the selected RAID Mode (combinations of disks), is one or
more of increased data integrity, fault-tolerance, throughput or capacity when
compared to single drives.
JBOD
Just a Bunch of Disks (JBOD) refers to a group of hard drives. In JBOD, the
number of logical drives is equal to the number of physical drives. This mode
allows the RAID System to operate as a multi-disk storage enclosure, but
provides no data redundancy.
In JBOD mode, if one disk in the RAID System fails, all data in that disk will
be lost. However, the data in the second disk is still accessible.
SPANNING
Spanning provides another maximum capacity solution. Spanning combines
multiple hard drives into a single logical unit. Unlike Striping, Spanning writes
data to the first physical drive until it reaches full capacity. When the first disk
reaches full capacity, data is written to the second physical disk. Spanning
provides the maximum possible storage capacity but does not increase
performance.
Data
Host
Read/ Write
Hard Disk
RAID
9GB
A
B
C
D
E
F
G
H
READ
RAID
CONTROLLER
WRITE
A
B
C
D
+ =
9GB
E
F
G
H
Physical Drive
18GB
A
B
C
D
E
F
G
H
Logical Drive
In Spanning mode, if one disk in the RAID System fails, all data in that disk
will be lost. However, the data in the second disk is still accessible.
48
STRIPING
Striping (RAID 0) is a performance-oriented, non-redundant data mapping
technique. It combines multiple hard drives into a single logical unit. Instead of
seeing several different hard drives, the operating system sees only one large
drive. Striping splits data evenly across two or more disks simultaneously,
dramatically increasing performance.
Striping can be implemented in disks of differing sizes, but the storage space
added to the array by each disk is limited to the size of the smallest disk. For
example, if a 220 GB disk is striped with a 200 GB disk, the size of the array will
be 400 GB. Striping is typically used for high performance applications, such as,
video editing, video playback, and 3D multimedia design. Although Striping is an
easily implemented, simple configuration, Striping should never be used for
mission critical applications.
Data
Host
Read/ Write
Hard Disk
RAID
9GB
A
B
C
D
E
F
G
H
READ
A
C
E
G
WRITE
9GB
RAID
CONTROLLER
+ =
B
D
F
H
Physical Drive
18GB
A
B
C
D
E
F
G
H
Logical Drive
In Striping mode, if one disk in the RAID System fails, all data in both
installed disks will be lost.
49
MIRRORING
Mirroring (RAID 1) consists of at least two drives storing duplicate copies of the
same data. In this mode, the data is simultaneously written to two disks. Thus,
the storage capacity of a two-disk array is combined into a single disk and the
capacity is limited to the size of the smallest disk. In Mirroring mode, identical
HDDs of the same capacity and RPM from the same manufacturer are highly
recommended for best capacity utilization.
Mirroring offers the highest level of data protection. Mirroring is typically used in
mission-critical systems, such as payroll, accounting, and ERP databases.
Data
Host
Read/ Write
Hard Disk
RAID
9GB
READ
A
B
C
D
RAID
CONTROLLER
WRITE
A
B
C
D
+ =
9GB
9GB
A
B
C
D
A
B
C
D
Physical Drive
Logical Drive
In Mirroring mode, if one disk in the array fails, the data in the backup disk is
still available.
50
APPENDIX: SPECIFICATIONS
MODEL
Connector
USB 2.0
2-Bay RAID
System
eSATA / USB 2.0
2-Bay RAID
System
USB 2.0 x 1
USB 2.0 x 1
eSATA x 1
USB 2.0 /
FIREWIRE 800
2-Bay RAID
System
USB 2.0 x 1
IEEE 1394b x 2
HDD Support
3.5” SATA HDD
*Identical HDD recommended:
Same manufacturer, capacity and RPM
RAID Level
Striping (RAID 0), Spanning, Mirroring (RAID 1), JBOD
Data Transfer
Speed
USB 2.0: up to
480Mb/sec
eSATA: up to
3000Mb/sec
USB 2.0: up to
480Mb/sec
USB 2.0: up to
480Mb/sec
1394b: up to
800Mb/sec
System
Material
Aluminum case with plastic front and rear panels
LED
Power On / Power Off / Access / Rebuild / Error
Power Supply
Input: AC 90-264V; Output: DC +12V/2A, +5V/2A
Peak current: +12V/4A, +5V/3A
Fan
40 x 40 x 10 mm
Dimension
220 x 85 x 130 mm
Weight
(Without HDD)
Package
Content
915g
920g
2-bay RAID
System
USB Type
A to mini-B
Cable
AC Adapter
Fastening
Screws x 8
Quick Start
Guide
2-bay RAID
System
USB Type B to
A Cable
eSATA Cable
AC Adapter
Fastening
Screws x 8
Quick Start
Guide
51
920g
2-bay RAID
System
USB Type A to
mini-B Cable
IEEE 1394b
(FireWire 800)
Cable
AC Adapter
Fastening
Screws x 8
Quick Start
Guide
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