HP iSCSI User manual

HP Accelerated iSCSI for Multifunction
Network Adapters
User Guide
Part Number 410538-00J
December 2007 (Ninth Edition)

© Copyright 2006, 2007 Hewlett-Packard Development Company, L.P.
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Corporation.
Audience assumptions
This document is for the person who installs, administers, and troubleshoots servers and storage systems.
HP assumes you are qualified in the servicing of computer equipment and trained in recognizing hazards
in products with hazardous energy levels.

Contents 3
Contents
Overview..................................................................................................................................... 4
iSCSI protocol........................................................................................................................................... 4
HP Accelerated iSCSI capability.................................................................................................................. 4
iSCSI supported operating systems .............................................................................................................. 4
Supported iSCSI targets ............................................................................................................................. 4
Download latest drivers, firmware, and documentation .................................................................................. 5
Configuring an iSCSI device .......................................................................................................... 6
iSCSI configuration through the NCU........................................................................................................... 6
Install the Network Configuration Utility software................................................................................. 6
iSCSI Settings tab...................................................................................................................................... 6
iSCSI Devices tab...................................................................................................................................... 9
iSCSI VLAN tab ........................................................................................................................................ 9
iSCSI Information tab............................................................................................................................... 11
iSCSI Statistics tab................................................................................................................................... 13
iSCSI Diagnostics tab............................................................................................................................... 13
Acronyms and abbreviations........................................................................................................ 14
Index......................................................................................................................................... 15

Overview 4
Overview
iSCSI protocol
The HP iSCSI protocol transports block-level storage requests over TCP connections. Using the iSCSI
protocol, systems can connect to remote storage and use it as a physical disk although the remote storage
provider or target may actually be providing virtual physical disks. HP Accelerated iSCSI supports all
targets that are certified and supported by Microsoft iSCSI Software Initiator.
HP Multifunction Server Adapters can be enabled as iSCSI devices or virtual iSCSI host bus adapters
(HBAs). iSCSI HBAs provide the capability to run iSCSI protocol over offloaded TCP connections. By
offloading the TCP connection processing to an HP Multifunction Server Adapter, CPU utilization is
reduced allowing additional processing capacity for applications.
HP Accelerated iSCSI capability
The HP Accelerated iSCSI capability is available as a standard feature with standup and mezzanine HP
Multifunction Server Adapters and HP Multifunction Server Adapters for HP BladeSystem servers. It is
available as a licensable option, through the purchase of an HP ProLiant Accelerated iSCSI license, for
embedded HP Multifunction Server Adapters.
iSCSI supported operating systems
iSCSI capabilities are available on the following operating systems:
•Windows Server 2008
•Windows Server 2008 x64
•Windows Server 2003
•Windows Server 2003 x64
To enable iSCSI on adapters running Windows Server 2003 and Windows Server 2003 x64 systems,
the Microsoft® iSCSI Software Initiator version 2.0 or later software must be installed. This software is
required to configure the iSCSI protocol, including discovery portals, iSCSI targets, authentication, and so
on.
To enable iSCSI on adapters running on Windows Server 2003 (SP1) and Windows Server 2003 x64
(SP1), an updated Storport storage driver from article number KB932755 must be downloaded from the
Microsoft (http://www.microsoft.com) website.
Supported iSCSI targets
HP Accelerated iSCSI supports all targets that are certified and supported by Microsoft iSCSI Software
Initiator.

Overview 5
Download latest drivers, firmware, and
documentation
HP updates networking software frequently to include new functionality and features. For the latest driver,
firmware, and documentation updates go to the HP website
(http://h18004.www1.hp.com/products/servers/networking/index.html).

Configuring an iSCSI device 6
Configuring an iSCSI device
iSCSI configuration through the NCU
Complete the steps in the following sections to enable and configure an iSCSI device or to view iSCSI
information through the NCU.
Install the Network Configuration Utility software
If you do not have HP NCU software installed on your server, complete the following steps to install the
NCU for Windows operating systems:
1. Go to the HP website (http://www.hp.com).
2. Click Software & Driver Downloads from the left menu bar.
3. Type the product name in the For product box and press Enter. For example, type NC373T.
4. Select an operating system.
5. Click HP Network Configuration Utility.
6. Click download and save the HP SoftPaq (sp#####.exe) file to a directory on your hard drive. The
SoftPaq file is a self-extracting executable with a file name based on the SoftPaq number.
7. Click the SoftPaq file to extract the files and then open the cmponent.htm file.
iSCSI Settings tab
To enable iSCSI:
1. Select an HP Multifunction Adapter in the NCU Main window and click Properties to display the
Multifunction Adapter Properties Settings tab. Alternatively, hold down the Alt key and enter p to
display the Settings tab.

Configuring an iSCSI device 7
2. Select Enable iSCSI Device to enable iSCSI on the multifunction adapter. iSCSI cannot be enabled on
the device if the adapter is in an Automatic, 802.3ad Dynamic with Fault Tolerance, or Switch-
Assisted Load Balancing with Fault Tolerance (SLB) team.
3. (Optional steps). Type a user-defined MAC address for the iSCSI device in the Locally Administered
Address box. The default MAC address is used if an address is not entered.

Configuring an iSCSI device 8
4. Click iSCSI IP Settings. The iSCSI IP Settings window appears so that you can specify how the IP
Address is obtained.
5. On the iSCSI IP Settings window, select one of the following:
a. Obtain an IP Address automatically. This is the default. If this option is selected, DHCP is used to
acquire an IP configuration for the iSCSI device.
b. Use the following IP address. This option allows you to specify the IP configuration for the iSCSI
device. The IP address MUST be different from IP addresses that are assigned to other iSCSI
devices and Ethernet adapters.
—IP Address. Enter the IPv4 address (dotted decimal).
—Subnet Mask. Enter the network subnet mask (dotted decimal).
—Default Gateway. Enter the default route.
6. Click OK to save all changes and return to the Multifunction Adapter Properties Settings tab.
After a Multifunction Server Adapter is enabled as an iSCSI device, it becomes a virtual iSCSI HBA. These
devices are displayed on the iSCSI Devices tab on the NCU Main window.

Configuring an iSCSI device 9
iSCSI Devices tab
The iSCSI Devices tab lists all HP ProLiant Gigabit Ethernet Multifunction server adapters that are iSCSI
enabled. A sample iSCSI Devices tab for Windows Server 2003 is shown below.
If you upgrade the Network Configuration Utility (NCU) to version 8.20 or later, the following team types
are converted to the Transmit Load Balancing (TLB) team type if they include an iSCSI-enabled adapter.
•Automatic
•802.3ad Dynamic with Fault Tolerance
•Switch-assisted Load Balancing with Fault Tolerance (SLB)
iSCSI VLAN tab
To create an iSCSI VLAN device for an iSCSI-enabled adapter:

Configuring an iSCSI device 10
1. Select an HP Multifunction Adapter in the NCU Main window or the iSCSI Devices tab and click
VLAN (802.1Q) to display the VLAN tab. Alternatively, hold down the Alt key and enter v to display
the VLAN tab.
The iSCSI VLAN/QOS (802.1p/Q) window displays the following information:
oiSCSI VLAN Id.Shows the identifier value used for the iSCSI VLAN device.
oiSCSI VLAN Name. Shows the descriptive name for the VLAN ID.