HP StorageWorks 2000s Manuale utente

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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Corporation.

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

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.

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