Dell PowerVault MD3200 Series Guida di riferimento rapido

Dell PowerVault MD3200 and

MD3220 Storage Arrays

Deployment Guide

book.book Page 1 Wednesday, September 7, 2011 12:34 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. . . . . . . . . . . . . . . . . . . . . . . . 5

System Requirements . . . . . . . . . . . . . . . . . . . 5

Management Station Requirements . . . . . . . . . 5

Introduction to Storage Arrays . . . . . . . . . . . . . . 6

2 Hardware Installation . . . . . . . . . . . . . . . . 9

Planning the Storage Configuration. . . . . . . . . . . . 9

Connecting the Storage Array. . . . . . . . . . . . . . 10

Cabling the Storage Array . . . . . . . . . . . . . . . . 10

Redundant and Non-Redundant

Configurations . . . . . . . . . . . . . . . . . . . 11

Single Controller Configurations . . . . . . . . . . 11

Dual Controller Configurations . . . . . . . . . . . 14

Cabling PowerVault MD1200 Series Expansion

Enclosures . . . . . . . . . . . . . . . . . . . . . . . . 20

Expanding With Previously Configured

PowerVault MD1200 Series Expansion

Enclosures . . . . . . . . . . . . . . . . . . . . . 20

Expanding With New PowerVault MD1200

Series Expansion Enclosures. . . . . . . . . . . . 22

book.book Page 3 Wednesday, September 7, 2011 12:34 PM

4Contents

3 Installing PowerVault MD Storage

Software . . . . . . . . . . . . . . . . . . . . . . . . . 25

Graphical Installation (Recommended). . . . . . . 26

Console Installation. . . . . . . . . . . . . . . . . 27

Silent Installation . . . . . . . . . . . . . . . . . . 27

Upgrading PowerVault MD Storage Software . . . . . 28

4 Post Installation Tasks. . . . . . . . . . . . . . 29

Verifying Storage Array Discovery . . . . . . . . . 30

5 Uninstalling PowerVault MD

Storage Software . . . . . . . . . . . . . . . . . . 33

Uninstalling MD Storage Software

From Windows . . . . . . . . . . . . . . . . . . . . . . 33

Uninstalling MD Storage Software

From Linux . . . . . . . . . . . . . . . . . . . . . . . . 34

A Appendix—Load Balancing. . . . . . . . . . 35

Windows Load Balance Policy . . . . . . . . . . . . . 35

Round Robin With Subset. . . . . . . . . . . . . . 35

Least Queue Depth With Subset . . . . . . . . . . 36

Changing Load Balance Policies in

Windows Sever 2008 . . . . . . . . . . . . . . . . 36

Setting Load Balance Policies in Linux. . . . . . . 37

book.book Page 4 Wednesday, September 7, 2011 12:34 PM

Introduction 5

Introduction

This guide provides information about deploying Dell PowerVault MD3200

and Dell PowerVault MD3220 storage arrays. The deployment process

includes:

• Hardware installation

• Modular Disk Storage Manager (MDSM) software installation

• Initial system configuration

Other information includes 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 MD3200

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 MD3200 series hardware

and software, ensure that a supported operating system is installed and the

minimum system requirements are met. For more information, see the

Support Matrix at 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.

book.book Page 5 Wednesday, September 7, 2011 12:34 PM

6Introduction

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

recommended).

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

Server.

NOTE: Operating system installations can be either native or hypervisior

guest configurations.

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

andVMwareESX andESXi.Forinformationabout thesupportedversions, see

the Support Matrix at support.dell.com/manuals.

• Administrator or equivalent permissions.

Introduction to Storage Arrays

An enclosure containing physical disks accessed through RAID controller

modules is called a storage array. A storage array includes various hardware

components, such as physical disks, RAID controller modules, fans, and

power supplies, gathered into enclosures.

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 system, MDSM and the storage array

communicate management requests and event information using

SAS connections.

• Management station—On a management station, MDSM communicates

with the storage array either through an Ethernet connection to the

storage array management port or through an Ethernet connection to a

host server. The Ethernet connection passes management information

between the management station and the storage array using SAS

connections.

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.

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Introduction 7

Unconfigured capacity comprises 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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8Introduction

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Hardware Installation 9

Hardware Installation

Before using this guide, ensure that you review the instructions in the:

•

Getting Started Guide

—The

Getting Started Guide

that shipped with the

storage array providesinformation to configure the initial setup of the system.

• Planning section of the

Owner’s Manual—

The planning section provides

information

about important concepts you must know before setting up

your storage solution. See the

Owner’s Manual

support.dell.com/manuals

Planning the Storage Configuration

Consider the following before installing your storage array:

• Evaluate data storage needs and administrative requirements.

• Calculate availability requirements.

• Decide the frequency and level of backups, such as weekly full backups

with daily partial backups.

• Consider storage array options, such as password protection and e-mail

alert notifications for error conditions.

• Design the configuration of virtual disks and disk groups according to a data

organization plan. For example, use one virtual disk for inventory, a second

for financial and tax information, and a third for customer information.

• Decide whether to allow space for hot spares, which automatically replace

failed physical disks.

book.book Page 9 Wednesday, September 7, 2011 12:34 PM

10 Hardware Installation

Connecting the Storage Array

The storage array is connected to a host using two hot-swappable RAID

controller modules. The RAID controller modules are identified as RAID

controller module 0 and RAID controller module 1.

For more information, see the

Getting Started

Guide.

Each RAID controller module has four SAS In port connectors that provide

SAS connections to the host or node. Each RAID controller module also

contains an Ethernet management port and a SAS Out port connector. The

Ethernet management port allows you to install a dedicated management

station (server or stand-alone system). The SAS Out port allows you to

connect the storage array to optional expansion enclosures for additional

storage capacity. For more information, see the

Getting Started

Guide

Each Dell PowerVault MD3200 series storage array can be expanded to a

maximum of120 (or 192, if enabledthrough thePremium Featureactivation)

physical disks through a maximum of seven PowerVault MD1200 series

expansion enclosures.

NOTE: When you connect a host server to a storage array SAS In port connector,

any Out port connector of the server's host bus adapter (HBA) can be used.

Cabling the Storage Array

You can cable the storage array to host servers with:

• Single path data configuration—A single path configuration allows you to

connect a maximum of eight hosts. This is a non-redundant configuration.

• Dual path data configuration—A dual path configuration allows you to

connect a maximum of four hosts.

Choose the data configuration based on:

• Number of hosts required

• Level of data redundancy required

book.book Page 10 Wednesday, September 7, 2011 12:34 PM

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