Dell PowerVault MD3200i Series Guida di riferimento rapido

Dell PowerVault MD3200i and

MD3220i Storage Arrays

Deployment Guide

book.book Page 1 Sunday, September 11, 2011 10:24 PM

Notes, Cautions, and Warnings

NOTE: A NOTE indicates important information that helps you make better use of

your computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss of data if

instructions are not followed.

WARNING: A WARNING indicates a potential for property damage, personal

injury, or death.

____________________

Information in this publication is subject to change without notice.

Reproduction of these materials in anymanner whatsoever without the written permissionof Dell Inc.

is strictly forbidden.

Trademarks used in this text: Dell™, the DELL logo, and PowerVault™ are trademarks of Dell Inc.

Intel®and Pentium®are registered trademarks of Intel Corporation in the U.S. and other countries.

Microsoft®, Windows®, and Windows Server®are either trademarks or registered trademarks of

Microsoft Corporation in the United States and/or other countries. Red Hat®and Red Hat®Enterprise

Linux®are registered trademarks of Red Hat, Inc. in the United States and other countries. SUSE®is

aregisteredtrademarkofNovell,Inc.,intheUnitedStatesandothercountries.VMware®isaregistered

trademark of VMware, Inc. in the United States or other countries. Citrix™ is a trademark of Citrix

Systems, Inc. and/or more of its subsidiaries, and may be registered in the United States Patent and

Trademark Office and in other countries.

Othertrademarksandtradenamesmaybeusedinthispublicationtorefertoeithertheentitiesclaiming

the marks and names or their products. Dell Inc. disclaims any proprietary interest in trademarks and

trade names other than its own.

2011 - 09 Rev. A01

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Contents 3

Contents

1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . 7

System Requirements . . . . . . . . . . . . . . . . . . . 7

Management Station Requirements . . . . . . . . . 7

Introduction to Storage Arrays . . . . . . . . . . . . . . 8

2 Hardware Installation . . . . . . . . . . . . . . . 11

Planning the Storage Configuration. . . . . . . . . . . 11

Connecting the Storage Array. . . . . . . . . . . . . . 12

Cabling the Storage Array . . . . . . . . . . . . . . . . 12

Redundant and Non-Redundant

Configurations . . . . . . . . . . . . . . . . . . . 12

Direct-Attached Configurations . . . . . . . . . . 13

Network-Attached Configurations . . . . . . . . . 20

Cabling PowerVault MD1200 Series

Expansion

Enclosures . . . . . . . . . . . . . . . . . . . . . . . . 23

Expanding With Previously Configured

PowerVault MD1200 Series Expansion

Enclosures . . . . . . . . . . . . . . . . . . . . . 23

Expanding With New PowerVault MD1200

Series Expansion Enclosures. . . . . . . . . . . . 25

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4Contents

3 Installing PowerVault MD Storage

Software . . . . . . . . . . . . . . . . . . . . . . . . . 27

Graphical Installation (Recommended). . . . . . . 28

Console Installation. . . . . . . . . . . . . . . . . 30

Silent Installation . . . . . . . . . . . . . . . . . . 30

Upgrading PowerVault MD Storage Software . . . . . 31

4 Post Installation Tasks. . . . . . . . . . . . . . 33

Before You Begin. . . . . . . . . . . . . . . . . . . . . 33

iSCSI Configuration Worksheet . . . . . . . . . . . . . 34

IPv4 Settings . . . . . . . . . . . . . . . . . . . . 35

IPv6 Settings . . . . . . . . . . . . . . . . . . . . 36

Configuring iSCSI on Your Storage Array . . . . . . . . 38

Automatic Configuration Using the Modular

Disk Configuration Utility . . . . . . . . . . . . . . 39

Post Connection Establishment Steps. . . . . . . . . . 48

5 Guidelines for Configuring Your

Network for iSCSI . . . . . . . . . . . . . . . . . . 49

Microsoft Windows Host Setup . . . . . . . . . . . . . 49

Linux Host Setup . . . . . . . . . . . . . . . . . . . . . 51

6 Uninstalling PowerVault MD

Storage Software . . . . . . . . . . . . . . . . . . 53

Uninstalling Dell PowerVault MD Storage

Software From Windows . . . . . . . . . . . . . . . . 53

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Contents 5

Uninstalling PowerVault MD Storage Software

From Linux . . . . . . . . . . . . . . . . . . . . . . . . 54

A Appendix—Manual Configuration

of iSCSI . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Step 1: Discover the Storage Array

(Out-of-band Management Only) . . . . . . . . . . . . 56

Default Management Port Settings . . . . . . . . 56

Automatic Storage Array Discovery . . . . . . . . 57

Manual Storage Array Discovery . . . . . . . . . 57

Setting Up the Array . . . . . . . . . . . . . . . . 57

Step 2: Configure the iSCSIPorts on the

Storage Array . . . . . . . . . . . . . . . . . . . . . . 58

Step 3: Perform Target Discovery From the

iSCSI Initiator . . . . . . . . . . . . . . . . . . . . . . 60

Step 4: Configure Host Access . . . . . . . . . . . . . 62

Understanding CHAP Authentication . . . . . . . . . . 63

What is CHAP? . . . . . . . . . . . . . . . . . . . 63

Target CHAP . . . . . . . . . . . . . . . . . . . . 63

Mutual CHAP . . . . . . . . . . . . . . . . . . . . 63

CHAP Definitions . . . . . . . . . . . . . . . . . . 64

Step 5: Configure CHAP Authentication on

the Storage Array (Optional). . . . . . . . . . . . . . . 64

Configuring Target CHAP Authentication on the

Storage Array. . . . . . . . . . . . . . . . . . . . 65

Configuring Mutual CHAP Authentication on the

Storage Array. . . . . . . . . . . . . . . . . . . . 66

Step 6: Configure CHAP Authentication on the

Host Server (Optional) . . . . . . . . . . . . . . . . . . 66

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6Contents

Step 7: Connect to the Target Storage Array From

he Host Server . . . . . . . . . . . . . . . . . . . . . . 70

Step 8: (Optional) Set Up In-Band Management. . . . . 74

B Appendix—Using Internet Storage

Naming Service . . . . . . . . . . . . . . . . . . . . 75

C Appendix—Load Balancing. . . . . . . . . . 77

Load Balance Policy . . . . . . . . . . . . . . . . . . . 77

Round Robin With Subset. . . . . . . . . . . . . . 77

Least Queue Depth With Subset . . . . . . . . . . 78

Least Path Weight With Subset. . . . . . . . . . . 78

Changing Load Balance Policies on the

Windows Server 2008 Operating System . . . . . . 78

Increasing Bandwidth With Multiple

iSCSI Sessions . . . . . . . . . . . . . . . . . . . 79

D Appendix—Stopping and Starting

iSCSI Services in Linux . . . . . . . . . . . . . . 83

book.book Page 6 Sunday, September 11, 2011 10:24 PM

Introduction 7

Introduction

This guide provides information about deploying Dell PowerVault MD

MD3200i and Dell PowerVault MD3220i storage arrays. The deployment

process includes:

• Hardware installation

• Modular Disk Storage Manager (MDSM) software installation

• Initial system configuration

Other information provided include system requirements, storage array

organization, and utilities.

NOTE: For more information on product documentation see,

support.dell.com/manuals.

MDSM enables an administrator to configure and monitor storage arrays for

optimum usability. The version of MDSM included on the PowerVault MD

series resource media can be used to manage both the PowerVault MD3200i

series and the earlier PowerVault MD series storage arrays. MDSM is

compatible with both Microsoft Windows and Linux operating systems.

System Requirements

Before installing and configuring the PowerVault MD3200i series hardware

and software, ensure that the operating system is supported and minimum

system requirements are met. For more information, see the Dell PowerVault

Support Matrix available on support.dell.com/manuals.

Management Station Requirements

A management station uses MDSM to configure and manage storage arrays

across the network. A management station must meet the following

minimum system requirements:

• Intel Pentium or an equivalent processor (1333 MHz or faster) with 512

MB RAM (1024 MB recommended)

• 1 GB disk space

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8Introduction

• Display resolution of 1024x768 with 16 million colors (1280x1024 32-bit

recommended)

• Microsoft Windows, Red Hat Enterprise Linux, and SUSE Linux

Enterprise Server.

NOTE:Operatingsysteminstallationscanbeeithernativeorhypervisorguest

configurations.

NOTE: Supported hypervisors include Microsoft Hyper-V, Citrix XenServer,

and VMware. For information about the supported versions, see the Support

Matrix at support.dell.com.

• Administrator or equivalent permissions

Introduction to Storage Arrays

A storage array includes various hardware components, such as physical disks,

RAID controller modules, fans, and power supplies, gathered into enclosures.

An enclosure containing physical disks accessed through RAID controller

modules is called a storage array.

One or more host servers attached to the storage array can access the data on

the storage array. You can also establish multiple physical paths between the

host(s) and the storage array so that loss of any single path (for example,

through failure of a host server port) does not result in loss of access to data

on the storage array.

The storage array is managed by MDSM running on a:

• Host server—On a host server, MDSM and the storage array communicate

management requests and event information using iSCSI ports.

• Management station—On a management station, MDSM communicates

with the storage array either through an Ethernet connection to the

storage array management port or though an Ethernet connection to a

host server. The Ethernet connection passes management information

between the management station and the storage array using iSCSI ports.

Using MDSM, you can configure the physical disks in the storage array into

logical components called disk groups and then divide the disk groups into

virtual disks. Disk groups are created in the unconfigured capacity of a storage

array. Virtual disks are created in the free capacity of a disk group.

book.book Page 8 Sunday, September 11, 2011 10:24 PM

Introduction 9

Unconfigured capacity comprises of physical disks not already assigned to a

disk group. When a virtual disk is created using unconfigured capacity, a disk

group is automatically created. If the only virtual disk in a disk group is

deleted, the disk group is also deleted. Free capacity is space in a disk group

that is not assigned to any virtual disk.

Data is written to the physical disks in the storage array using RAID

technology. RAID levels define the way in which data is written to physical

disks. Different RAID levels offer different levels of accessibility, redundancy,

and capacity. You can set a specified RAID level for each disk group and

virtual disk on your storage array.

For more information about using RAID and managing data in your storage

solution, see the Owner’s Manual

support.dell.com/manuals

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10 Introduction

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