HP StorageWorks 2000s User manual

User Guide
hp StorageWorks
iSCSI Feature Pack
Product Version: Version 1.5
First Edition (September 2004)
Part Number: T3662-90901
HP StorageWorks iSCSI Feature Pack for HP NAS products provides virtualization, allocation of disk
storage, and centralized management for iSCSI host applications.

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hp StorageWorks iSCSI Feature Pack User Guide
First Edition (September 2004)
Part Number: T3662-90901

HP StorageWorks iSCSI Feature Pack User Guide 1
Contents
1 Introduction
HP StorageWorks iSCSI Feature Pack. . . . . . . . . . . . . . . . . . . . . 3
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Getting Help. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Configuring Your iSCSI System
iSNS Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Default Portal Template . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
License and Version Information . . . . . . . . . . . . . . . . . . . . . . . 12
Server Configuration Files . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Server Diagnostic File . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3 Logical Units
Creating a New Logical Unit . . . . . . . . . . . . . . . . . . . . . . . . . 14
Importing a Logical Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Viewing Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Expanding a Logical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Assigning/Unassigning a Host to a Logical Unit. . . . . . . . . . . . . . . . 17
Viewing Logical Unit Properties . . . . . . . . . . . . . . . . . . . . . . . 18
Deleting Logical Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4Hosts
Creating a New Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2 HP StorageWorks iSCSI Feature Pack User Guide
Managing Host Initiators . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Managing the LUs Assigned to a Host . . . . . . . . . . . . . . . . . . . . . 21
Managing Portals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Viewing Host . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Deleting Hosts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Command Line Interface
Command Line Basics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Global Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Device Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
File Storage Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Storage Pool Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Host Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Logical Unit Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Configuration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
iSNS Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
iSCSI Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6 Glossary

HP StorageWorks iSCSI Feature Pack User Guide 3
Introduction
With an ever-expanding need for storage, it has become increasingly desirable for small and
medium-sized businesses to consolidate and centralize all of their data.
While Windows-powered HP StorageWorks NAS products have addressed some of their
file-level needs, consolidation/centralization of block-level storage for applications such as
databases and messaging servers has been difficult for these businesses because of a lack
of resources to address the costs and complexity of supporting a Storage Area Network. As
a result, the majority of small and medium business databases and messaging servers are
still using direct attached storage and storage administrators are facing increasing
manageability problems.
The advent of a standard iSCSI protocol holds the promise of allowing these businesses to
have their applications access centralized storage using their existing, familiar IP network
infrastructure.
What is iSCSI?
You are probably already familiar with the Small Computer Systems Interface (SCSI) which
enables host computers to perform block-level data I/O to a variety of peripheral devices
(such as disk and tape devices and printers). The Internet SCSI (iSCSI) protocol adds
dimension to SCSI and eliminates the distance limitation associated with it by enabling
block-level I/O over the IP network.
With its ability to simply attach servers and storage devices into your existing network
infrastructure, iSCSI enables your organization to cost-effectively build and manage a
storage area network based on technologies (SCSI, IP) you already understand and use.
HP StorageWorks iSCSI Feature Pack
HP StorageWorks iSCSI Feature Pack for HP StorageWorks NAS products provides
virtualization, allocation of disk storage, and centralized management for iSCSI host
applications.
HP iSCSI Feature Pack is comprised of a Windows-compatible iSCSI target driver and an
iSNS (Internet Storage Name Service) server. All software management has been integrated
under a tabular “iSCSI” window in the Windows Server 2003
Web Administration screen.

HP StorageWorks iSCSI Feature Pack User Guide 4
The following figure illustrates how your NAS system provides file-level storage for your
workstations, and how your iSCSI Feature Pack provides block-level storage for your
application and file servers.

HP StorageWorks iSCSI Feature Pack User Guide 5
Getting Started
The following steps provide an overview of the tasks you must complete to configure your
system. To install the iSCSI Feature Pack software:
1. For systems with a DVD/CD-ROM drive:
a. Insert the iSCSI Feature Pack installation CD into your CD-ROM.
b. Click
setup.exe .
2.
For systems without a DVD/CD-ROM drive , you can either share the CD from
another system, or copy the CD across the network.
a. To share the CD from another system:
• Insert the CD into another system and share out that system’s DVD/CD-ROM drive.
• From the NAS storage server, map a drive to the CD share and install from it. You
can map to the DVD/CD share from your iSCSI storage server via Windows
Terminal Services client,or via Remote Desktop if you do not have a monitor on your
NAS storage server.
b. To copy the CD across the network:
• Create a directory on the C: drive of the NAS system (e.g. C:\iSCSI), and make it a
share with Full Control (read/write permission).
• Connect to the share from a remote system that has a CD-ROM drive using the
Microsoft File Explorer.
• From the remote system, copy the contents of the CD-ROM to the share on the
NAS system.
• On the NAS system, use My Computer or the File Explorer to browse the directory
that was created (e.g. C:\iSCSI). The contents of the iSCSI Feature Pack CD will
now be in the directory. Click
setup.exe to start the installation.
If your system does not have a monitor, you can use the Windows 2000 Terminal
Services client or
Remote Desktop (available from the Maintenance tab in the Web
Administration console) to install the software.
NOTICE: The name of your iSCSI Feature Pack system cannot exceed 15 characters. This is a
NetBIOS restriction. If your server name is longer, you must rename it before installing
the iSCSI Feature Pack software.
NOTICE: You must use the ANSI machine name for the iSCSI Feature Pack system if you are
running the system on a non-English language machine.
NOTE: Your system will be rebooted after the installation.

HP StorageWorks iSCSI Feature Pack User Guide 6
3. Start your Web Administration console (consult your HP StorageWorks NAS server
documentation for instructions). An
iSCSI tab appears on the Web Administration
console. All features related to the iSCSI Feature Pack can be found under this tab.
4. Click on the
Status: Information message that appears at the top of the console. You
will see an alert that your iSCSI Feature Pack system has not been configured. Click to
configure the following:
• Enter key codes to activate the iSCSI Feature Pack.
• Specify an Internet Storage Name Service (iSNS) server. iSNS facilitates device
discovery in storage networks. For the iSCSI Feature Pack, iSNS facilitates the
naming, registration, and discovery of iSCSI Logical Units (LU) by host initiators. By
default, iSNS is disabled. If you have an external iSNS server, you can set the
system to use it. If you do not have an external iSNS server, you can use the local
one that is provided by the iSCSI Feature Pack (and runs as an independent
Windows service when enabled).
• The HP NAS 500s, 1200s, and 1500s systems have a single pre-allocated LUN and
single file system. To allocate storage to the iSCSI target, create a virtual file-based
device using NTFS (NT File System) volume space. You will need to specify how
large it should be.
5. Install an iSCSI initiator on each of your host systems.
iSCSI initiator software/hardware is available from many sources and needs to be
installed and configured on all servers that will access shared storage.
• For Windows hosts, you can download a software initiator from Microsoft’s website:
http://www.microsoft.com/windowsserversystem/storage/iscsi.mspx
• For Linux hosts, you can download a software initiator from SourceForge.net:
http://sourceforge.net/projects/unh-iscsi
• For NetWare hosts, you can download a software initiator from Novell’s website:
http://download.novell.com/pages/PublicSearch.jsp
6. Create your LUs. Refer to the Logical Units section for more details.
7. Add all of your hosts and assign them to your LUs. Refer to the Hosts section for more
details.
This document provides all of the information you need to get started with your iSCSI
Feature Pack.

HP StorageWorks iSCSI Feature Pack User Guide 7
Getting Help
If you still have a question after reading this guide, contact an HP authorized service
provider or access our web site: http://www.hp.com.
HP Technical Support
Telephone numbers for worldwide technical support are listed on the following HP web site:
http://www.hp.com/support. From this web site, select the country of origin.
NOTE: For continuous quality improvement, calls may be recorded or monitored.
Be sure to have the following information available before calling:
• Technical support registration number (if applicable)
• Product serial numbers
• Product model names and numbers
• Applicable error messages
• Operating system type and revision level
• Detailed, specific questions
HP Storage Web Site
The HP web site has the latest information on this product, as well as the latest drivers.
Access the storage site at: http://www.hp.com/country/us/eng/prodserv/storage.html. From
this web site, select the appropriate product or solution.
HP Authorized Reseller
For the name of your nearest HP authorized reseller:
• In the United States, call 1-800-345-1518
• In Canada, call 1-800-263-5868
Elsewhere, see the HP web site for locations and telephone numbers:
http://www.hp.com.

HP iSCSI Feature Pack User Guide 8
Configuring Your iSCSI System
When you select Configuration from the main iSCSI screen, the following functions are
available:
• iSNS Configuration - Specify which iSNS Server to use.
• Storage - Manage iSCSI storage devices and pools.
• Default Portal Template - Add/delete portals that will be assigned to hosts.
• License and Version Information - Enter key codes for licensed components.
• Server Configuration Files - Back up and restore the server configuration.
• Server Diagnostic File - Capture an X-ray for technical supprort.
iSNS Configuration
iSNS facilitates device discovery in storage networks. For the iSCSI Feature Pack, iSNS
facilitates the naming, registration, and discovery of iSCSI Logical Units (LU) by host
initiators.
By default, iSNS is disabled. If you have an external iSNS server, you can set the system to
use it. If you do not have an external iSNS server, you can use the local one that is provided
by the iSCSI Feature Pack. When enabled, it runs as an independent Windows service.
1. Select
Configuration from the main iSCSI screen.
2. Select
iSNS Configuration .
3. To use the local iSNS server, select
Use local iSNS or to use an external iSNS server,
select
Use remote iSNS at and enter the server’s IP address.
NOTE: If you do not enable iSNS, you will need to register client initiators with your iSCSI
Feature Pack. This enables the server to see the available initiators. Since this
procedure can vary by vendor, you should refer to the documentation provided by the
vendor.