Dell MD3200I, MD3220I User Manual

0 (0)
Dell PowerVault MD3200i and
MD3220i Storage Arrays
Deployment Guide
Notes, Cautions, and Warnings
NOTE: A NOTE indicates important information that helps you make better use of
your computer.
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.
© 2011 Dell Inc.Allrightsreserved.
Reproduction of these materials in any manner whatsoever without the written permission of 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
a registered trademark of Novell, Inc., in the United States and other countries. VMware
®
is a registered
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Other trademarks and trade names may be used in this publication to refer to either the entities claiming
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trade names other than its own.
2011 - 09 Rev. A01
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
4 Contents
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
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 iSCSI Ports 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
6 Contents
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 A ppendix—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
Introduction 7
1

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
8 Introduction
Display resolution of 1024x768 with 16 million colors (1280x1024 32-bit
recommended)
Microsoft Windows, Red Hat Enterprise Linux, and SUSE Linux
Enterprise Server.
NOTE: Operating system installations can be either native or hypervisor guest
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.
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
at
support.dell.com/manuals
.
10 Introduction
Hardware Installation 11
2

Hardware Installation

Befo re using thi s guide, ensure that y ou review the instructions in the:
Getting Started Guide
—The
Getting Started Guide
that shipped with
the storage array provides information to configure the initial setup of
the system.
Planning section of the
Owner’s Manual—
The planing section provides
information
about important concepts you must know before setting
up your storage solution. See the
Owner’s Manual
at
support.dell.com
.

Planning the Storage Configuration

Consider the following before installing your storage array:
Evaluate data storage needs and administrative re quirements.
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 r eplace
failed physical disks.
12 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.
Each RAID controller module has four iSCSI In port connectors that provide
Ethernet connections to the host server or switches. Each RAID controller
module also contains an Ethernet management port and a SAS Out port. 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 PowerVault MD1200 series e xpansion
enclosures for additional storage capacity.
Each PowerVault MD3200i series storage array can be expanded to a
maximum of 120 (or 192, if enabled using Premium Feature activation)
physical disks through a maximum of seven PowerVault MD1200 series
expansion enclosures.

Cabling the Storage Array

The iSCSI interface enables different host-to-controller configurations. The
figures in this chapter are grouped according to the following categories:
Direct-attached configurations (no Ethernet switches are used)
Network-attached (SAN) configurations (Ethernet switches are used)

Redundant and Non-Redundant Configurations

Non-redundant configurations are configurations that provide only a single
data path from a host to the storage array. This type of configuration is only
recommended for non-critical data storage. Path failure from a failed or
removed cable, a failed NIC, or a failed or removed RAID controller module
results in loss of host access to storage on the storage array.
Redundancy is established by installing separate data paths between the host
and the storage array, in which each path is to one of the two RAID controller
modules installed in the storage array. Redundancy protects the host from
losing access to data in the event of path failure, because both RAID
controller modules can access all the disks in the storage array.
Hardware Installation 13

Direct-Attached Configurations

You can connect the Ethernet ports of the host servers directly to the storage
array RAID controller module iSCSI ports.
Single Path Data Configurations
With a single path configuration, a group of heterogeneous hosts can be
connected to the storage array through a single physical Ethernet port. Since
there is only one port, there is no redundancy, although each iSCSI portal
supports multiple connections. This configuration is supported for both
single controller and dual controller modes.
14 Hardware Installation
Figure2-1 shows a non-redundant cabling configuration to the RAID
controller modules using a single path data configuration.
Figure 2-1. Four Hosts Connected to a Single Controller
Corporate, public,
or private network
Storage array
Server 1 Server 2 Server 3 Server 4
Hardware Installation 15
Figure 2-2 shows two hosts connected to a single controller array.
Figure 2-2. T wo Hosts Connected to a Single Controller
Corporate, public,
or private network
Storage array
Server 1
Server 2
16 Hardware Installation
Figure2-3 shows eight stand-alone hosts supported in a dual controller array
configuration with a single data path.
Figure 2-3. Eight Hosts in a Dual-Controller Configuration
Corporate, public,
or private network
Storage array
Server 1
Server 2
Server 3 Server 4
Server 8
Up to 8 hosts
Hardware Installation 17
Dual-Path Data Configuration
In Figure2-4, up to four servers are directly attached to the RAID controller
modules. If the host server has a second Ethernet connection to the array,
it can be attached to the iSCSI ports on the array's second controller.
This configuration provides improved availability by allowing two separate
physical paths for each host, which ensures full redundancy if one of the
paths fail.
In Figure2-5, up to four cluster nodes are directly attached to two RAID
controller modules. Since each cluster node has redundant paths, loss of a
single path would still allow access to the to the storage array through the
alternate path.
18 Hardware Installation
Figure 2-4. Four Hosts Connected to Two Controllers
Storage array
Server 1 Server 2 Server 3 Server 4
Corporate, public,
or private network
Hardware Installation 19
Figure 2-5. Four Hosts Connected in a Dual-Controller Configuration
Corporate, public,
or private network
Storage array
Four node cluster server
20 Hardware Installation

Network-Attached Configurations

You can also cable the host servers to the RAID controller module iSCSI ports
through industry-standard 1GB Ethernet switches. An iSCSI configuration
that uses Ethernet switches is frequently referred to as an IP SAN. By using an
IP SAN, the PowerVault MD3200i series storage array can support up to 64
hosts simultaneously. This configuration supports either single- or dual-path
data configurations and either single or dual controller modules.
Figure2-6 shows up to 64 stand-alone servers attached (using multiple
sessions) to a single RAID controller module through a network. Hosts that
have a second Ethernet connection to the network allow two separate
physical paths for each host, which ensures full redundancy if one of the paths
fail. Figure2-7 shows how the same number of hosts can be similarly attached
to a dual RAID controller module configuration.
Hardware Installation 21
Figure 2-6. 64 Servers Connected to a Single Controller
Corporate, public,
or private network
Up to 64 hosts
Switch
Storage array
22 Hardware Installation
Figure 2-7. 64 Servers Connected to Two Controllers
Corporate, public,
or private network
Switch
Storage array
Up to 64 hosts
Hardware Installation 23
Cabling PowerVault MD1200 Series
Expansion
Enclosures
You can expand the capacity of your PowerVault MD3200i series storage array
by adding PowerVault MD1200 series expansion enclosures. You can expand
the physical disk pool to a maximum of 120 (or 192, if enabled using
Premium Feature activation) physical disks using a maximum of seven
expansion enclosures.
Expanding With Previously Configured PowerVault MD1200 Series
Expansion Enclosures
Use this procedure if your expansion enclosure is directly attached to and
configured on a Dell Po werEdge RAID Controller (PER C)H800 adapter. Data
from virtual disks created on a PERC H800 adapter cannot be directly
migrated to a PowerVault MD3200i series storage array or to a PowerVault
MD1200 series expansion enclosure connected to a PowerVault MD3 200i
series storage array.
CAUTION: If a PowerVault MD1200 series expansion enclosure that was
previously attached to PERC H800 adapter is used as an expansion enclosure to a
PowerVault MD3200i series storage array, the physical disks of the expansion
enclosure are reinitialized and data is lost. You must backup all data on the
expansion enclosure before attempting the expansion.
To attach previously configured PowerVault MD1200 series expansion
enclosures to the PowerVault MD3200i series storage array:
1
Back up all data on the expansion enclosure(s).
2
While the enclosure is still attached to the PERC H800 controller,
upgrade the expansion enclosure firmware to the latest version available
at
support.dell.com
.
Windows systems users can reference the
DUP.exe
package and Linux
kernel users can reference the
DUP.bin
package.
3
Ensure that the storage array software is installed and up to date before
adding the expansion enclosure(s).
For more information, see the
Support Matrix
at
support.dell.com/manuals
.
24 Hardware Installation
a
Install the software and driver package included on the PowerVault
MD series resource media.
For information about installing the software, see "Installing
PowerVault MD Storage Software" on page 25.
b
Update the storage array RAID controller module firmware and
NVSRAM to the latest versions available at
support.dell.com
, using
PowerVault MDSM.
c
Click
Tools
Upgrade RAID Controller Module Firmware
in the
Enterprise Management Window (EMW).
4
Stop all I/O and turn off the system and attached units.
a
Stop all I/O to the storage array and turn off the host systems attached
to the storage array.
b
Turn off the storage array .
c
Turn off the expansion enclosure(s) in the affected system.
5
Cable the expansion enclosure(s) to the storage array.
6
Turn on attached units:
a
Turn on the expansion enclosure(s). Wait for the enclosure status
LED to turn blue.
b
Turn on the storage array and wait for the status LED to indicate that
the unit is ready:
If the status LEDs are solid amber, the storage array is still coming
online.
If the status LEDs are blinking amber, there is an error that can be
viewed using the PowerVault MDSM.
If the status LEDs are solid blue, the storage array is ready.
c
When the storage array is online and ready, turn on any attached host
systems.
7
After the PowerVault MD1200 series expansion enclosure is configured as
an expansion enclosure of the storage array, restore the data that was
backed up in step 1.
After the expansion enclosures are online, they can be accessed as a part of
the storage array.
Hardware Installation 25

Expanding With New PowerVa ult MD1200 Series Ex pan sion Enclo s ures

Perform the following steps to attach new PowerVault MD1200 series
expansion enclosures to a PowerVault MD3200 i series sto r age array:
1
Before adding the expansion enclosure(s), ensure that the storage array
software is installed and up to date. For more information, see the
Support
Matrix
at
support.dell.com/manuals
.
a
Install the software and driver package included on the PowerVault
MD series resource media.
For information about installing the software, see "The PowerVault
MD series storage software installer provides features that include the
core software, providers, and optional utilities. The core software
feature includes the host-based storage agent, multipath driver, and
MD Storage Manager (MDSM) application used to configure,
manage, and monitor the storage array solution. The providers feature
includes providers for the Microsoft Virtual Disk Service (VDS) and
Microsoft Volume Shadow-Copy Service (VSS) framework. The
PowerVault Modular Disk Configuration Utility (MDCU) is an
optional utility that provides a consolidated approach for configuring
the management ports, iSCSI host ports, and creating sessions for the
iSCSI Modular Disk storage arrays. It is recommended that you install
and use PowerVault MDCU to configure iSCSI on each host
connected to the storage array." on page 27.
b
Set up the PowerVault MD1200 series expansion enclosure(s).
For information about setting up the PowerVault MD1200 series
expansion enclosure(s), see the
Hardware Owner’s Manual
at
support.dell.com/manuals
.
c
Using PowerVault MDSM, update the RAID controller module
firmware and NVSRAM to the latest versions available on
support.dell.com
. From the Enterprise Management Window
(EMW).
d
Click
Tools
Upgrade RAID Controller Module Firmware
.
2
Stop I/O and turn off all systems:
a
Stop all I/O to the storage array and turn off affected host systems
attached to the storage array.
b
Turn off the storage array .
26 Hardware Installation
c
Turn off any expansion enclosure(s) in the affected system.
3
Cable the expansion enclosure(s) to the storage array.
4
Turn on attached units:
a
Turn on the expansion enclosure(s). Wait for the enclosure status
LED to turn blue.
b
Turn on the storage array and wait for the status LED to indicate that
the unit is ready:
If the status LEDs are solid amber, the storage array is still coming
online.
If the status LEDs are blinking amber, there is an error that can be
viewed using PowerVault MDSM.
If the status LEDs are solid blue, the storage array is ready.
c
After the storage array is online and ready, turn on any attached host
systems.
5
Using PowerVault MDSM, update all attached expansion enclosure
firmware if it is out of date:
a
From the EMW, select the enclosure that you want to update and
enter the
Array Management Window
(AMW).
b
Click
Advanced

Maintenance
Download

EMM Firmware
.
c
Select
Select All
to update all the attached expansion enclosures
simultaneously.
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