ATTO Technology iPBridge 1550D User manual

iPBridge 1550D
Installation and Operation Manual

ATTO Technology, Inc.
155 CrossPoint Parkway
Amherst, New York 14068 USA
www.attotech.com
Tel [phone]
Fax [phone]
Sales support: [email protected]
Technical support: Monday -- Friday, 8am-8pm EST
[email protected]
© 2007 ATTO Technology, Inc. All rights reserved. All brand or product names are trademarks of their respective
holders. No part of this manual may be reproduced in any form or by any means without the express written
permission of ATTO Technology, Inc.
9/2007
........................................................................................................ Document Control Number: PRMA-0369-000

Contents
1 ATTO iPBridge provides storage options ........................................1
Features
1.1 Physical components ..........................................................3
Dimensions
Environment
Power
SCSI port
Ethernet port
Serial port
Reset switch
LED indicators
2 Installation ..........................................................................................5
Unpacking the packing box; verifying contents
Installing the iPBridge
Installing Windows drivers
Discovering the IP address.
Installing MS iSCSI Initiator for Windows
Installing iSCSI Initiator for Mac OS X
Setting up Internet Explorer
Beginning initial configuration
3 Configure the iPBridge ......................................................................7
Preliminary steps
ExpressWizard
3.1 Target management .............................................................9
Target names
Default target node
Automatically configure a single target
Map devices manually
Multiple target nodes
Automatically configure multiple targets
Manually configure multiple target nodes
3.2 iSCSI configuration ..............................................................12
Ethernet
iSCSI
CHAP commands
3.3 Optional changes .................................................................13
Preliminary steps
Modify passwords
Set up a VLAN: Virtual Local Area Network
Enhance performance
iSCSI performance configuration tool (Windows only)
4 Remote system monitoring ...............................................................15
SNMP

5 Updating firmware ..............................................................................16
Using ATTO ExpressNAV
Using FTP
6 Troubleshooting .................................................................................17
Inside out method
Check basic diagnostic tools
Check the host event log
Check the iPBridge event and trace logs
Visually inspect LEDs
Check for problems on attached devices
Check host versions
Check iPBridge product versions
Check components
Check SCSI devices
Check the iPBridge SCSI port
Check the serial port
Check the iPBridge internal configuration
Check the iPBridge Ethernet port
Check the LAN/WAN
Check the iSCSI Host Adapter or NIC
Check the iSCSI OS driver
Check the Operating System
Check the applications
Performance issues
Check SCSI devices
Check the iPBridge SCSI port
Check the iPBridge Ethernet port
Check the LAN/WAN
Check the Ethernet Host Adapter or NIC
Check the applications
Check the host system
Check the Operating System
Use the ATTO iSCSI performance configuration tool (Windows only)
Optimize ATTO ExpressNAV in Internet Explorer
Reset to factory defaults
7 Interface options ................................................................................23
Using ExpressNAV
Opening an ExpressNAV session
Optimizing ExpressNAV in Internet Explorer
Using the serial port
Using Telnet
Appendix A Cabling ...............................................................................i
SCSI cabling
Cable types
Examples
Connecting SCSI devices to the SCSI port
Ethernet connections
Appendix B CLI provides an ASCII-based interface ...........................iii
CLI error messages
CLI summary
Alphabetical CLI command explanations
Appendix C Safety standards and compliances .................................xiv

1
ATTO Technology Inc. iPBridge Installation and Operation Manual
1 ATTO iPBridge provides storage options
The ATTO bridge family of products provides GbE-to-SCSI GbE-to-Fibre Channel or Fibre Channel-
to-SCSI bridges available as embeddable boards, stand alone enclosures that can be fitted for
rackmount integration, or desktop units, depending on the model and your needs.
The ATTO iPBridge and ATTO FibreBridge
family of products share common configuration
options and functions to provide the most
versatile connectivity options available. Each
product has been engineered to address specific
customer needs. New capabilities are integrated
into products throughout the family as much as
possible, requiring only an upgrade of firmware to
incorporate them into your SAN (Storage Area
Network) or NAS (Network Attached Storage).
The ATTO iPBridge 1550 is a cost-effective way
of expanding your existing storage capacity
without sacrificing performance. The ATTO
iPBridge 1550 is ideally suited to the SME or for
corporate IT departments seeking to expand
storage requirements with minimal disruption
while making existing SCSI equipment accessible
over an Ethernet network to all network users.
To make sure you have the most up-to-date
version of the firmware, visit the ATTO
Technology website,
www.attotech.com .
Features
• One independent Gigabit Ethernet port and one
independent Ultra 320 SCSI port
• ATTO ExpressNAV™, integrated web server for
configuration, upgrades, monitoring and
management
• ATTO ExpressWizard, one-button initial setup
for most configurations
• Inband LAN-based monitoring and management
• Command Line Interface (CLI) for configuration
and management
• RS-232 serial port with RJ-11 connector
• Diagnostic capabilities
• Support for manual and auto LUN mapping
• intelligent Bridging Architecture™ for optimized
performance
• Near wire speed sustained throughput
• Ideal solution for connecting high performance
tape and disk devices to an IP Storage Area
Network (SAN)

2
Exhibit 1.0-1 Possible storage solutions using the iPBridge.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
1.1 Physical components
The ATTO iPBridge 1550D is a 1-Gigabit Ethernet to Ultra 320 SCSI desktop bridge which produces a
cost-effective iSCSI solution for SMB/SME environments.
Dimensions
Width: 7.5 inches wide
Depth: 5.0 inches long
Height: 1.76 inches
Environment
Operating Temperature: 0-70 °C external
Ambient air
should not exceed 40 °C
Humidity: 10-90% non-condensing
Power
The iPBridge 1550 uses a 12-volt power brick
connected to an appropriate power source. The
power source must be connected to a protective
earth ground and comply with local electrical
codes. Improper grounding may result in an
electrical shock or damage to the unit.
Input voltage: [email protected]
100-240 VAC, 0.5A@100v, 47-63 Hz
SCSI port
The SCSI port is an Ultra 320 LVD/SE SCSI bus
with 68-pin “P” interface; downward compatible
with all forms of low voltage differential and
single-ended SCSI.
Ethernet port
The 10/100/1000 GbE RJ-45 Ethernet port uses
the Intel 8254x family gigabit Ethernet chipset to
support iSCSI data transfer and inbound
management. GbE cables must be at least CAT-
5E certified.
Serial port
An RS-232 serial port provides support for remote
monitoring and management. The serial port is set
at the factory at 115,200 bps.
Reset switch
A manual reset switch is mounted on the back
panel. Insert a tool in the hole in the back panel to
activate the switch, wait until the Activity LED on
the top of the iPBridge becomes green, then cycle
power. The iPBridge is reset to factory defaults
LED indicators
Ready/SCSI Port Activity: a green LED on the
top and on the back of the iPBridge lights solid
green to indicate ready and blinks to show SCSI
activity and to identify the iPBridge when
commanded by software.
Ethernet port: two LEDs are integrated into the
Ethernet connector. One lights solid green to
denote a complete link and blinks green to show
activity. A bicolor green/yellow LED lights
yellow to indicate 1 Gb/sec. transmission speed
and lights green to show 100 Mb/sec. speed.

4
Exhibit 1.1-1 iPBridge 1550D back panel

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ATTO Technology Inc. iPBridge Installation and Operation Manual
2 Installation
If you have not already completed the instructions on the Quick Start packed with your iPBridge, use
the following instructions to install the iPBridge.
Unpacking the packing box; verifying
contents
• The iPBridge
Note the serial number of your iPBridge,
located on the bottom of the unit, for later use:
____________________________________
• Power cord
• Power brick
• CD which includes the iPBridge firmware, the
Installation and Operation Manual, the ATTO
QuickNAV program and ATTO iPBridge drivers.
Installing the iPBridge
1 Place the iPBridge on a stable flat surface.
2 Connect the host computer to the Ethernet port.
3 Connect SCSI devices to the iPBridge using the
proper SCSI cables. For details refer to Cabling
on page i of the Appendix.
4 Power up the SCSI devices. Proper termination
is required.
Note
You must power up attached devices before
adding power to the iPBridge.
5 Connect the iPBridge Ethernet port to your
network using at least Cat5e cable. For details
refer to Cabling on page i of the Appendix.
6 Connect the AC power cord from the iPBridge
to the proper AC source outlet, connect the AC
power cord to the power brick and connect the
brick to the iPBridge.
CAUTIONCAUTION
The power source must be connected to a
protective earth ground and comply with
local electrical codes. Improper grounding
may result in an electrical shock or damage
to the unit.
7 Wait for the iPBridge Ready LED to light
indicating the bridge has completed its power-
on self test sequence.
8 Windows
® users continue to Installing
Windows drivers; Mac ® users continue to
Discovering the IP address.
Installing Windows drivers
1 Windows automatically detects the iPBridge
and asks for the driver in the Add Hardware
wizard. Select Install from a list or specific
location
2 Click Next
3 Choose Don’t Search
4 Click Next
5 Choose Have disk
6 Specify the driver as found in the PC folder in
the setup CD. The files are in a folder based on
your operating system: Win2K drivers for
Windows 2000 and Windows XP/2003 drivers
for all 2003 Server products.
Note
Use the files directly from the CD or copy them
onto a floppy or to a local directory on your
hard drive.
7 Follow the remaining instructions to complete
the installation procedure.
8 After the driver is installed, the iPBridge is listed
in the System Devices folder.
Discovering the IP address.
1 From the CD supplied with your iPBridge, run
the QuickNav Utility QuickNAV-windows.exe
for Windows or QuickNAV-Mac for Mac OS X.
2 Locate the iPBridge with the serial number
recorded earlier.
3 Highlight the serial number.
4 Click Next.
If a DHCP server is available on your network,
an address is assigned automatically by the
server. Note the assigned address:
_____________________________________
If you do not have a DHCP server, get an IP
address and subnet mask from your network
administrator, type it into the area provided, and
select Next. Note the IP address and subnet
mask here._____________________________
5 Click on Launch Browser
Your browser points to the ATTO ExpressNAV
splash screen.

6
Windows users continue to Installing MS iSCSI
Initiator for Windows; Mac users continue to
Installing iSCSI Initiator for Mac OS X.
If you use Internet Explorer, use Setting up
Internet Explorer if needed.
Installing MS iSCSI Initiator for Windows
1 Download the latest version of Microsoft® iSCSI
Software Initiator from
www.microsoft.com/downloads. Searching
on iSCSI Initiator usually helps to locate it.
2 Launch the Initiator installation program and
follow the instructions.
3 Find the Microsoft iSCSI Initiator icon on your
desktop and launch the program.
4 Click on the Discovery tab.
5 Click on the Add button under the target portal
heading.
6 Type in the iPBridge IP address previously-
recorded in Discovering the IP address. on
page 5.
7 Click on OK
8 Click the Targets tab.
9 Click on Log on button.
10 Select Automatically restore this connection
when the system reboots.
11 Click OK to complete logon.
12 If the Found New Hardware Wizard appears,
follow the instructions and install the iPBridge
driver from the CD that came with your
iPBridge.
13 Click OK to close the iSCSI Initiator utility.
You should now have storage you can manage
through Windows Disk Management.
Continue to Beginning initial configuration.
Installing iSCSI Initiator for Mac OS X
Contact your ATTO sales representative or go to
www.attotech.com to purchase the ATTO
Technology Xtend SAN, iSCSI Initiator for Mac
OS X.
Setting up Internet Explorer
1 Open your browser
2SelectInternet Options.
3 In the Internet Options screen, select the
Security tab.
4 Click on the Trusted Sites icon.
5 Click on the Sites button.
6 In the text box Add this Web site to the zone,
add the IP address of the iPBridge. You may
use wild cards.
7 Click on Add
8 Uncheck the Require server verification
check box.
9 Click OK.
10 At the bottom of the Internet Options box, click
on OK and close the box.
Beginning initial configuration
1 Return to the ExpressNAV interface welcome
screen. Click on Enter Here
2 Type in the user name and password.
Note
The default values are user name root and
password
Password . The user name is case
insensitive and the password is case
sensitive.It is best practice to change the
default user name and password. Refer to
Modify passwords on page 13.
3TheStatus page appears. Continue to
Configure the iPBridge on page 7.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
3 Configure the iPBridge
To configure the ATTO iPBridge, use ATTO ExpressNAV. Default values are appropriate for most
configurations, but may be modified. The ExpressWizard simplifies initial configuration of the iPBridge.
Default values are appropriate for most applications. If
you wish to change these values, use ATTO
ExpressNAV, a browser-based graphical interface.
Other methods are also available. Refer to
Interface
options on page 23.
If you do not use the ExpressWizard, continue to
• Mapping and addressing, also known as Target
management on page 9
• iSCSI configuration on page 12
• Optional changes on page 13
Preliminary steps
1 If you are not already in
the ExpressNAV
interface, type the IP
address of your
iPBridge in a standard
browser as found in
Using ExpressNAV on
page 23, click Enter
Here, type in your user
name and password,
and click OK.
2TheStatus page
appears.
You may view the
default settings by
clicking on each
element in the left hand
menu, then continue in
one of three ways:
• Review the settings, keeping the automatic
settings created when you powered up your
iPBridge and do nothing now.
• Use the ExpressWizard, accessed from the
side menu, to initially set up your iPBridge
and its attached storage for specific
applications automatically.
• Use the individual pages listed on the side
menu to make changes or use other features
as needed.
ExpressWizard
Most applications may be set up automatically using
the ExpressWizard from the ExpressNAV interface.
The ExpressWizard simplifies initial configuration of
the iPBridge
1 Follow the Preliminary steps.
2 From the side menu select ExpressWizard.
3 Select your storage type
• Digital video disk storage: optimized for
digital video (sequential access)
configurations
• Digital audio disk storage: optimized for
audio applications (sequential access)
• IT/database disk storage optimized for
general IT and database applications
(random access).
• Tape storage
• Optical storage
4 Click Next.
5 In the Devices Detected page, click on
Rescan to ensure all the devices you wish in
your storage configuration are present. The
ExpressWizard uses all attached storage for
the configuration.
6 When all devices are listed, click Next.
7 Set your administrator password.
8 Click Next.

8
9 Select the answer to the question Does your
network support Jumbo Frames?
10 Click Next.
11 Data port IP address, subnet mask and
gateway information is listed. Change any
elements as needed.
12 Click Next.
13 The configuration for the iPBridge based on
your input in the previous screens appears. If
the information is correct, click Commit.
14 The ExpressWizard configures your iPBridge
and storage. You may select items on the left
side menu to view the current configuration or
to change the configuration at any time.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
3.1 Target management
Storage devices are mapped using the designations for the iSCSI LUN. The easiest way to map devices
is to use the Automatic Target Management feature in the ATTO ExpressNAV interface.
CAUTIONCAUTION
Changing the device map can affect the
host’s view of devices and your application
configuration.
To map SCSI devices, you must connect the
devices to the iPBridge SCSI port. To access
mapped SCSI devices over Ethernet, you must
have a host computer connected to the iPBridge
Ethernet data port.
If you decide to change the automatic mapping set
up when you powered up the iPBridge, you have
two options to map devices after you disable
automatic mapping:
• You may map devices manually to the single
default node.
• You may map each device to its own target,
breaking the single iSCSI target node into
multiple nodes. Multiple target nodes allow
flexibility to grant or deny access between
initiators and devices.
If you divide the default single target node into
multiple target nodes, you must set up access to
each node separately.
Target names
Each iSCSI target node is identified by a unique
world-wide iSCSI-qualified name which
references the iPBridge serial number and target
node name:
iqn.1995-12.com.attotech:ipbridge:
serialnumber <targetname>
Default target node
The default target is set as a single target with
Access Control (ACL) disabled and CHAP
authentication disabled. The default target node
cannot be deleted.
Use the ExpressNAV interface to map devices
automatically or manually. Refer to
Opening an
ExpressNAV session on page 23 for information
about ExpressNAV.
Automatically configure a single target
1 If you have not already, open an ExpressNAV
session. For instructions, refer to Opening an
ExpressNAV session on page 23 , click Enter
Here, type in your user name and password,
and click OK.
2TheStatus page appears. From the
ExpressNAV menu, select Auto Target Mgt.
3 Click on the Map all devices to default target
button.
4 When the action is complete, the iSCSI Target
Management page appears. Make any
adjustments to the mapping or begin a
discovery session.
5 When the action is complete, the iSCSI Target
Management page appears. From there you
may make adjustments to the mapping or begin
a discovery session.
If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.
Map devices manually
1 If you have not already, open an ExpressNAV
session. For instructions, refer to Opening an
ExpressNAV session on page 23 , click Enter
Here, type in your user name and password,
and click OK.
2TheStatus page appears. Select the Manual
Target Mgt menu item on the left panel.
3 Click on the Device Maps link of the default
target.
4 Select the devices from the box on the right
panel and drag to the appropriate LUN on the
central panel.
5 Click Submit.
If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.

10
Multiple target nodes
Multiple targets allow you to create a more
configurable mapping scheme which can
segregate storage into different iSCSI nodes
within the iPBridge, with each iSCSI target
having its own set of access criteria.
For example, if you have two servers and a library
with four tapes and a media changer, the default
node would provide both servers access to all
tapes and the media changer (default target
mode).
If you configured multiple target nodes, you are
able to map some devices to one server and other
devices to the other server, requiring separate user
names and passwords for access using various
methods including Access Control Lists, iSNS
and CHAP authentication. Consult with your
network administrator and refer to Exhibit 3.1-1.
Note
If you map actual storage to more than one
iSCSI target and a server has authorization for
both targets, the server could show duplicate
storage without any warning.
Automatically configure multiple targets
1 If you have not already, open an ExpressNAV
session. For instructions, refer to Opening an
ExpressNAV session on page 23
2 From the ExpressNAV main menu, click on the
Automatic Target Management menu item on
the left side of the screen.
3 Click on the Map each device to its own
target button.
A target name suffix is attached to the iqn of
each SCSI device such as
vendorid-devicename-xxx
• vendorid is the SCSI device vendor ID
• devicename is the SCSI device’s inquiry
device name.
• xxx is a device index
When the action is complete, the iSCSI Target
Management page appears.
If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.
Manually configure multiple target nodes
1 If you have not already, open an ExpressNAV
session. For instructions, refer to Opening an
ExpressNAV session on page 23
2TheStatus page appears. Select Auto Target
Mgt menu item on the left side of the screen.
3 In the iSCSI Target Management page, type
[name] in the Add an iSCSI target box
The name is a suffix appended to the standard
IPBridge iqn name. The suffix name can be up
to 24 characters.
4 Click on the device map link of your target.
5 After the next mapping page opens, drag the
boxes representing devices to the LUNs you
want.
6 Click Submit.
7 Repeat from Step 3 for each node you want to
configure.
8 If you are prompted to restart the iPBridge, go
to the Firmware Restart page and restart the
iPBridge.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
Exhibit 3.1-1 Target node configurations.

12
3.2 iSCSI configuration
You may fine-tune the iPBridge using the ATTO ExpressNAV interface.
Several special iPBridge features may be
accessed using the ExpressNAV graphical user
interface. For details on each command, refer to
CLI provides an ASCII-based interface on page
iii of the Appendix
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 23, click Enter Here,
type in your user name and password, and click
2TheStatus page appears. Click on the menu
item which regulates the parameter you wish to
change.
• Ethernet: iSCSI port number
• iSCSI iSCSI Alias, ISNS Login Control,
iSNSServer, Speedwrite
• CHAP commands: iSCSI Chap Secret, iSCSI
Target in the Manual Target Mgt menu
3 Click Submit on each page after you make
changes to save your choices. When you have
completed all changes, go to the Restart page
and click on Restart.
Ethernet
Click on the Ethernet menu item.
iSCSI Port Number
Specifies the port number whereby the iPBridge listens
for iSCSI connections. The port number must be between
1024 and 65535 except for port 860. The default is 3260.
iSCSI
Click on the iSCSI menu item.
iSCSI Alias
Provides a human-readable name assigned to the
iPBridge. Aliases may be 1 to 64 characters long and may
contain spaces if spaces are enclosed in quotation
marks. The default is a blank space.
iSNS Login Control
Specifies whether the iPBridge will delegate its access
control/authorization to an iSNS server. Default is
disabled.
Note
iSNS Login Control cannot be used with
Access Control found on the
iSCSI Target
Management
page.
iSNSServer
Specifies whether the IP address of a valid iSNS server
from which the iPBridge will attempt iSCSI initiator
discovery. Setting to 0.0.0.0 disables the iSNS server
lookup. Default is 0.0.0.0.
SpeedWrite
When enabled, improves the performance of WRITE
commands to SCSI devices attached to the iPBridge.
CHAP commands
To find the CHAP commands,
1 Click on the Manual Target Mgt menu item
2 Click on the Target Management page
3 Click on the iSCSI CHAP table entry next to the
iSCSI target you wish to use.
iSCSI CHAP
iSCSI CHAP controls whether CHAP (Challenge
Handshake Authentication Protocol) is used for the iSCSI
protocol. If CHAP is enabled, the target requires the
initiator to negotiate CHAP authentication using CHAP
secrets (passwords). An initiator may reject this
negotiation.
iSCSI Chap Secret
Specifies the incoming and outgoing secrets (passwords)
for iSCSI CHAP sessions. Secrets are case sensitive, 12
to 32 characters (16 for Microsoft iSCSI initiator), and
cannot contain spaces.
In and out secrets must be
different.
An
in secret is for authentication of the server to the
iPBridge. The iPBridge can store up to 32 in secrets.
An
out secret is for authentication of the iPBridge to the
server. There is only one out secret per target that cannot
be deleted.
iSCSI Target
Creates or deletes an iSCSI target name. The target
name acts as a suffix to the standard bridge iSCSI-
qualified name. The target name may not exceed 24
characters.

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ATTO Technology Inc. iPBridge Installation and Operation Manual
3.3 Optional changes
Default values, even if you have not used the ExpressWizard, are appropriate for most configurations,
but may be modified.
Preliminary steps
1 If you are not already in the ExpressNAV
interface, type the IP address of your iPBridge
in a standard browser as found in Using
ExpressNAV on page 23, click Enter Here,
type in your user name and password, and click
OK.
2TheStatus page appears.
View the default settings by clicking on each
element in the left hand menu, then use the
individual pages listed on the side menu to
make changes or use other features.
Modify passwords
1 Follow the Preliminary steps
2 Click Bridge.
The Bridge Configuration page is displayed.
The Administrator user name that you are
currently logged in with and the current read
only user name, if present, are displayed in
their text boxes.
3 Enter the Administrator (Admin) password
where indicated.
4 Enter appropriate information into the New
Admin Password, Confirm New Admin
Password or New Read Only Password and
Confirm New Read Only Password text
boxes.
5 Click Submit.
6 Go to the Restart page and restart the
iPBridge.
Set up a VLAN: Virtual Local Area Network
A Virtual LAN (VLAN) is a group of devices on
the same physical LAN which can communicate
with each other as if they were all on different
physical LANs. This creates a network that is
independent of physical location, allows grouping
of users into logical workgroups, increases
efficient use of resources, and adds security
options by allowing some users into the LAN and
keeping other users out.
You may create up to eight Virtual LAN IDs for
each Ethernet data port. Each VLAN ID is
assigned a VLAN name of up to 64 characters. If
no VLAN Id exists for a data port, VLAN is
disabled for that port.
1 Follow the Preliminary steps
2 Click on the Ethernet menu item.
3TheEthernet Port Configuration page
appears. Add a VLAN ID number and name in
the appropriate boxes.
4 Press Submit.
5 Go to the Restart page and restart the
iPBridge.
After rebooting, Virtual LAN takes effect.

14
Enhance performance
Note
If you used ExpressWizard to set up your
iPBridge, changing these parameters may
interfere with ExpressWizard settings.
Default values, even if you have not used the
ExpressWizard, are appropriate for most
configurations, but may be modified.
1 Follow the Preliminary steps.
2 On the iSCSI page, enable SpeedWrite.
3 On the Ethernet page, change MTU to 9014.
Note
If you change the MTU on the iPBridge, you
must enable jumbo frames on your initiator
and change the MTU on the initiator.
4 For Windows operating systems, use the ATTO
iSCSI performance configuration tool
(Windows only).
iSCSI performance configuration tool
(Windows only)
The ATTO iSCSI performance configuration tool
changes the Windows registry parameters for
Microsoft iSCSI Initiator and TCP/IP to enhance
overall data throughput.
1 From the CD which came with your iPBridge,
copy the Perftune.exe file to your hard drive.
2 Execute the program.
3 Click on Use ATTO Performance Settings.
Settings take effect on the next system reboot.
The following settings are affected:
FirstBurstLength
The maximum amount, in bytes, of unsolicited data an
iSCSI initiator may send to the target during the
execution of a single SCSI command including the
immediate data and the sequence of unsolicited Data-Out
PDUs which follow the command.
FirstBurstLength
cannot exceed
MaxBurstLength
ATTO value: 1048576 decimal 00100000 hex
MaxBurstLength
The maximum SCSI data payload, in bytes, in a Data-In
or a solicited Data-Out iSCSI sequence. A sequence
consists of one or more consecutive Data-In or Data-Out
PDUs that end with a Data-In or Data-Out PDU with the
F bit set to one.
ATTO value: 1048576 decimal 00100000 hex
MaxRecvDataSegmentLength
The maximum data segment length, in bytes, that a
transmitter (initiator or target) can receive in an iSCSI
PDU. The transmitter is required to send PDUs with a
data segment that does not exceed
MaxRecvDataSegmentLength of the receiver.
ATTO value: 1048576 decimal 00100000 hex
MaxTransferLength
The maximum number of bytes that may be transferred by
a single SCSI request block (SRB).
ATTO value 1048576 decimal 00100000 hex
SrbTimeoutDelta
The maximum amount of time, in seconds, before an SRB
request will time out.
ATTO value 300 decimal 0000012c hex
Tcp1323Opts
This parameter controls RFC 1323 time stamps and
window-scaling options. Time stamps and window
scaling are enabled by default, but can be manipulated
with flag bits. Bit 0 controls window scaling and bit 1
controls time stamps.
ATTO value: 1

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ATTO Technology Inc. iPBridge Installation and Operation Manual
4 Remote system monitoring
You may set up the iPBridge to send notifications when certain events occur.
You may set up the iPBridge to send notifications
when certain events occur using the
Remote
Management
page of the ExpressNAV
interface.
You designate the person receiving notification of
conditions and the level of severity which prompt
notification using the Simple Network
Management Protocol (SNMP).
For both methods, the severity level which is
report can be
critical, warning or all .
• Critical means only critical event notifications
are sent.
• Warning means only warnings and critical event
notifications are sent.
• All means warnings, critical events and
informational messages are sent.
SNMP
An agent resides in the iPBridge which takes
information from the iPBridge and translates it
into a form compatible with SNMP. If certain
conditions arise, the agent sends notifications
(traps) to a client.
Contact your network administrator for the MIB
software and appropriate MIB file for your
iPBridge.
1 Follow the Preliminary steps on page 13.
2 Click on Remote Mgt from the side menu. The
Remote Management page appears.
3 In the SNMP line, click on the enabled button.
4 In the SNMP Traps or SNMP Extended Traps
line, click on Enable. For details, refer to
SNMPTraps and SNMPExtendedTraps on
page xi of the Appendix.
5 In the SNMP Trap Recipient IP addresses
section, enter the IP address of each person you
want to notify.
6 From the drop-down box next to each trap
address, select the level of severity for which
you want each address to be notified: None, All,
Critical or Warning.
7 Click on Submit.
8 Go to the Restart page and restart the iPBridge.
After rebooting, the iPBridge sends notifications
as you set them up.