Dell PowerVault MD3260i Series Mode d'emploi

Troubleshooting the

Dell PowerVault MD-Series

Storage Array

Configuring the Ethernet Management Port

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June 2012

Contents

About this Document .....................................................................................................4

Managing the MD-Series Storage Array ................................................................................5

Out-of-Band Management vs. In-Band Management..............................................................5

Setting Up Management Using MD Storage Manager .............................................................5

Troubleshooting the Ethernet Management Port ....................................................................8

Locating the Management Port ......................................................................................8

Default Port IP Addresses .............................................................................................8

Recognizing Issues Involving the Ethernet Management Port...................................................9

Basics: Cabling, Power and Network Switches ....................................................................9

Troubleshooting Physical Connectivity Problems............................................................... 11

Troubleshooting Management Port IP Addressing and Configuration ....................................... 12

Using a Serial Cable to Configure Your Management Port .................................................... 15

Troubleshooting Management Port Device Discovery Issues.................................................. 16

About this Document

To understand the scope and organization of this document, refer to the following table.

Topic Description

What does this document

contain? An overview of the management features of thePowerVault MD-series storage arrays

Recommended recommended out-of-band managementconfiguration and setup

Potential errors that that may occur if the Ethernetmanagement port is incorrectly configured, including

steps on how to resolve

Other troubleshooting information relating to the MD-series iSCSI storage arrays

What is the intended

audience? Users experiencing problems setting up out-of-band

management of the MD storage array or experiencing

problems with the Ethernet management port of the

storage array

How is information

categorized? This document is divided into three broad sections:

Understanding physical connectivity between the

Ethernet management port and management station

Recognizing and correcting management port IP address

problems

Recognizing and correcting device discovery errors

For more information See the following:

MD-series user documentation at

support.dell.com/manuals

MD-series video series at del.ly/PowerVaultMD

Managing the MD-Series Storage Array

One of the most critical issues in establishing an efficient storage management architecture is placing

data traffic and management traffic on the proper networks. When setting up management on any Dell

PowerVault MD-Series storage array, Dell recommends that you always separate management traffic

from the server-to-storage array data path using different subnetworks, or subnets.

This management method is commonly called out-of-band management.

Out-of-Band Management vs. In-Band Management

Out-of-band management prevents traffic on the Ethernet management ports of your storage array

from interfering with critical data I/O between the storage array and server. While in-band

management −routing management traffic and data I/O on the same data path −is supported on the

MD storage array, it will likely result in an across-the-board reduction in performance and/or

throughout.

Setting Up Management Using MD Storage Manager

Dell PowerVault MD Storage Manager is a graphically based tool that allows you to fully manage,

configure and provision your MD-series storage arrays.

To set up your Ethernet management port in MD Storage Manager:

Launch MD Storage Manager

From the Setup tab, choose Configure Ethernet Management Ports

Using the Change Network Configuration wizard, enter the port and IP address information for the

management port on both RAID controller modules.

Figure 1. MD Storage Manager Summary View

Figure 2. MD Storage Manager Setup View

Figure 3. MD Storage Manager Configure Management Ports

NOTE: IPv4 and IPv6 are both supported protocols on the MD-series iSCSI storage arrays. Whichever

one you use, be aware of the following:

It is possible to enable both IPv6 and IPv4 on your host server. However, Dell

recommends that you disable the one you are not using before setting up your storage

array. Having both enabled may cause miscommunication between the storage array and

host server.

Make sure that the protocol you choose is enabled on both the storage array and host

server. Mixing protocols (for example, enabling IPv4 on the storage array and IPv6 on the

host server) will cause session interrupts and possible loss of data.

Once the storage array is successfully added to MD Storage Manager, all physical and logical

components of your storage array are manageable using the menu-based interface. For more

information on installing and using MD Storage Manager, see the Getting Started Guide and

Deployment Guide that shipped with your storage array. The Help option from the MD Storage

Manager main window also offer additional guidance.

Troubleshooting the Ethernet Management Port

The Ethernet management ports on the MD-series RAID controllers allow you to manage your storage

array via a separate management network from the host server data path (known as out-of-band

management).

Dell recommends always using out-of-band management to manage your storage array.

Locating the Management Port

Each RAID controller module contains a 100/1000 Mbps Ethernet management port. Whether you are

using SAS, iSCSI or Fibre Channel, the management port is located in same same position.

Figure 4 shows the management ports on an MD3600i-series iSCSI storage array.

Figure 4. Management Ports on an MD3600i-series storage array

Default Port IP Addresses

Each port on the storage array is assigned a default, factory-set IP address. Since DHCP is enabled by

default for the management ports at the factory (however, not for the host server ports), these

addresses should be discoverable when the storage array is initially powered on.

Table 1. Default IP Addresses on MD-series storage array (all models)

Port ID Controller 0 Controller 1 Subnet mask

iSCSI port 0 192.168.130.101 192.168.130.102 255.255.255.0

iSCSI port 1 192.168.131.101 192.168.131.102 255.255.255.0

iSCSI port 2 *192.168.132.101 192.168.132.102 255.255.255.0

iSCSI port 3 *192.168.133.101 192.168.133.102 255.255.255.0

Ethernet

management port 192.168.128.101 192.168.128.102 255.255.255.0

* Port 2 and 3 are available on 1Gb iSCSI MD3200i-series storage arrays only

Recognizing Issues Involving the Ethernet Management Port

Problems occurring due to misconfigured or nonfunctional Ethernet management ports on your storage

array's RAID controller modules can appear in a number of different ways. However, typical

management port issues may include:

−Status LEDs on iSCSI ports not lit or indicating fault (refer to Table 2 for LED values)

−Unable to ping an iSCSI port from the host server on the same subnet

−Dynamic Host Configuration Protocol (DHCP) is unable to assign an IP address for one or more

of your RAID controller modules

−Duplicate IP addresses appear (either manually set or multiple arrays with the same factory

default IP addresses)

Basics: Cabling, Power and Network Switches

Simple issues, such as an improperly seated Ethernet cable or a defective and/or powered-down

hardware component, are often the root cause of a number of problems. If a physical link error occurs

or you are unable to connect to a storage array in MD Storage Manager, it is always useful to perform a

simple, standard troubleshooting protocol:

1. Verify you have a solid, well-seated connection between the RAID controller module's Ethernet

management port(s) and your host server and/or network switch.

2. If you are using a network switch, verify the following:

- All active link and link status LEDs are lit (an unlit activity LED is not necessarily a

problem)

- The Ethernet switch you are using is compatible with your RAID controller module (for

example, is compatible with 1Gb MD3200i-series and/or 10Gb MD3600i-series arrays)

- Do not connect an Ethernet switch with a speed of less than 1Gb to the storage array

3. Verify that MD-series storage array enclosures and RAID controller modules are powered on and

show the proper LED status configurations. (See Table 2.) For additional MD-specific LED

diagnostic information, see support.dell.com/manuals.

4. Ensure that all cabling and connectors are functional. If uncertain, swap current cables with

known good cables to determine if the problem is related.

Figure 5. Enclosure Status LEDs (Front)

Table 2. Enclosure Status LED Values

LED

Function

Enclosure status

Solid blue: Normal operation

Blinking blue: Host identifying

Solid amber: Enclosure rebooting or being reset

Blinking amber: Enclosure fault or host not using

preferred path to virtual disks

Enclosure power

Solid green: At least one power supply active

Figure 6. Enclosure/RAID Controller Module Status LEDs (Back)

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