Fujitsu ETERNUS Instruction Manual

ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 3Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
Preface
This document briefly explains the operations that need to be performed by the user in order to
connect an ETERNUS2000 model 100 or 200, ETERNUS4000 model 300, 400, 500, or 600, or
ETERNUS8000 model 700, 800, 900, 1100, 1200, 2100, or 2200 Disk storage system to a
server running SUSE Linux Enterprise Server via an iSCSI interface.
This document should be used in conjunction with any other applicable user manuals, such as
those for the ETERNUS2000 model 100 or 200, ETERNUS4000 model 300, 400, 500, or 600, or
ETERNUS8000 model 700, 800, 900, 1100, 1200, 2100, or 2200 Disk storage system, server,
OS used, adapters, drivers, etc.
This document references the following documents:
•Server Support Matrix
•ETERNUS Disk storage systems Server Connection Guide (iSCSI) ETERNUS Disk Storage
System Settings for ETERNUS ETERNUS2000
•ETERNUS Disk storage systems Server Connection Guide (iSCSI) ETERNUS Disk Storage
System Settings for ETERNUS4000, ETERNUS8000
•ETERNUSmgr Install Guide
•ETERNUSmgr User Guide
Also, note that in this document the ETERNUS2000 models 100 and 200, ETERNUS4000 mod-
els 300, 400, 500, and 600, and ETERNUS8000 models 700, 800, 900, 1100, 1200, 2100, and
2200 Disk storage systems are collectively referred to as ETERNUS Disk storage systems.
Second Edition
December 2010
The Contents and Structure of this Manual
This document is composed of the following nine chapters.
•Chapter 1 Workflow
This describes how to connect the ETERNUS Disk storage systems to a server running
Linux.
•Chapter 2 Checking the Server Environment
This describes which servers can be connected to ETERNUS Disk storage systems.
•Chapter 3 LAN Switch Connection
This describes how to connect the ETERNUS Disk storage system to the server via a LAN
switch.

Preface
ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 4Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
•Chapter 4 Notes
This describes issues that should be noted when connecting the ETERNUS Disk storage
systems and server.
•Chapter 5 Setting Up the Linux Server
This describes how to install and set up the Linux server.
•Chapter 6 Installing and Setting Up ETERNUSmgr
This describes how to install ETERNUSmgr.
•Chapter 7 Setting Up the ETERNUS Disk Storage Systems
This describes how to set up the ETERNUS Disk storage systems using ETERNUSmgr.
•Chapter 8 ETERNUS Disk Storage System Logical Unit Recognition
This describes how to recognize the ETERNUS Disk storage system LUNs from server.
•Chapter 9 Setting Up and Checking the device-mapper multipath
This describes how to set up and check the device-mapper multipath.
Safe Use of this Product
■Using this manual
This manual contains important information to ensure the safe use of this product. Be sure to
thoroughly read and understand its contents before using the product. After reading, store this
manual in a safe place for future reference.
FUJITSU has made every effort to ensure the safety of the users and other personnel, and to
prevent property damage. When using this product, carefully follow the instructions described in
this manual.
Acknowledgments
•Linux is a trademark or registered trademark of Linus Torvalds in the USA and other
countries.
•SUSE is a registered trademark of SUSE Linux AG., a subsidiary of Novell, Inc.
•The company names, product names and service names mentioned in this document are
registered trademarks or trademarks of their respective companies.

Preface
ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 5Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
Naming Conventions
■Product Names
•"SLES" refers to SUSE Linux Enterprise Server.
•"SLES11" refers to the following products:
-SUSE Linux Enterprise Server 11
•"SLES10" refers to the following products:
-SUSE Linux Enterprise Server 10
■Other names
•"iSCSI port" or "Channel Adapter" (CA) refers to the iSCSI interface module used in the
ETERNUS Disk storage systems to connect to the server.
•"LAN card" refers to the iSCSI interface module normally used in the server. A "Network
Interface Card" (NIC), "LAN adapter", or "LAN board" may be used instead, depending on the
server.
Copyright 2010 FUJITSU LIMITED

ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 6Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
Contents
Chapter 1 Workflow ...................................................................................8
Chapter 2 Checking the Server Environment........................................10
2.1 Hardware .......................................................................................................... 10
2.2 Basic Software ................................................................................................. 10
2.3 LAN Cards ........................................................................................................ 10
2.4 Multipath Driver ................................................................................................ 10
Chapter 3 LAN Switch Connection.........................................................11
Chapter 4 Notes .......................................................................................12
4.1 LAN Environment Notes ................................................................................... 12
4.2 Server Startup and Power Supply Control Notes ............................................. 12
4.3 SLES Notes ...................................................................................................... 12
Chapter 5 Setting Up the Linux Server ..................................................13
5.1 Preparation ....................................................................................................... 13
5.1.1 Installing the "open-iscsi" package ............................................................................................ 13
5.1.2 Preparing the device-mapper multipath setup ........................................................................... 13
5.2 Setting Up Automatic iSCSI Service ................................................................ 14
5.3 Setting Up the Network Environment ............................................................... 14
5.4 Checking the iSCSI Initiator Name ................................................................... 14
Chapter 6 Installing and Setting Up ETERNUSmgr ..............................15
Chapter 7 Setting Up the ETERNUS Disk Storage Systems................16
Chapter 8 ETERNUS Disk Storage System Logical Unit
Recognition.............................................................................17
8.1 When CHAP Authentication is not Used .......................................................... 17
8.2 When Unidirectional CHAP Authentication is Used ......................................... 18
8.3 When Bidirectional CHAP Authentication is Used ........................................... 19
8.4 Rebooting the Linux Server .............................................................................. 20
8.5 Recognizing LUNs ........................................................................................... 20
Chapter 9 Setting Up and Checking the device-mapper multipath.....21
9.1 Editing "/etc/multipath.conf" .............................................................................. 21

Contents
ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 7Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
9.2 Enabling the device-mapper multipath ............................................................. 22
9.3 Rebooting the Linux Server .............................................................................. 22
9.4 Recognizing the Post device-mapper multipath LUNs ..................................... 23
9.5 Checking the device-mapper multipath Status ................................................. 23

ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 8Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
Chapter 1 Workflow
Which documents need to be referred to varies with the connection environment. Refer to the
workflow that follows to determine which documents are required.
Required Documents
•ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux (SUSE Linux
Enterprise Server) (This manual)
•Server Support Matrix
•ETERNUS Disk storage systems Server Connection Guide (iSCSI) ETERNUS Disk Storage
System Settings for ETERNUS2000
•ETERNUS Disk storage systems Server Connection Guide (iSCSI) ETERNUS Disk Storage
System Settings for ETERNUS4000, ETERNUS8000
•ETERNUSmgr Install Guide
•ETERNUSmgr User Guide
•Other manuals provided with each product (server, Multipath Driver, and LAN card)
Workflow
Set Up the Linux Server
Set up the OS, hardware, software, and iSCSI environment.
Refer
-"Chapter 5 Setting Up the Linux Server" (page 13)

Chapter 1 Workflow
>
ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 9Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
Install ETERNUSmgr and Set Up the ETERNUS Disk Storage System
If ETERNUSmgr is to be used, install it and set up the ETERNUS Disk storage system.
Refer
-"Chapter 6 Installing and Setting Up ETERNUSmgr" (page 15)
-"Chapter 7 Setting Up the ETERNUS Disk Storage Systems" (page 16)
-Installing ETERNUSmgr
•"ETERNUSmgr Install Guide"
-Checking the setup and maintenance operations
•"ETERNUSmgr User Guide"
-Setting up the ETERNUS Disk storage system
•"ETERNUS Disk storage systems Server Connection Guide (iSCSI) ETERNUS
Disk Storage System Settings for ETERNUS2000"
•"ETERNUS Disk storage systems Server Connection Guide (iSCSI) ETERNUS
Disk Storage System Settings for ETERNUS4000, ETERNUS8000"
Set the Server to Recognize the Logical Units
Set up the server so that it can recognize the ETERNUS Disk storage systems' LUN
(logical units).
Refer
-"Chapter 8 ETERNUS Disk Storage System Logical Unit Recognition" (page 17)
Set Up and Check the device-mapper multipaths
If device-mapper multipathing is used, set up and check the device-mapper multipaths.
Refer
-"Chapter 9 Setting Up and Checking the device-mapper multipath" (page 21)

ETERNUS Disk storage systems Server Connection Guide (iSCSI) for Linux
(SUSE Linux Enterprise Server) 10 Copyright 2010 FUJITSU LIMITED
P3AM-4152-02ENZ0
Chapter 2 Checking the Server Environment
Refer to the "Server Support Matrix" to check the server environment.
2.1 Hardware
Refer to the "Server Support Matrix".
2.2 Basic Software
Refer to the "Server Support Matrix".
2.3 LAN Cards
Refer to the "Server Support Matrix".
2.4 Multipath Driver
Refer to the "Server Support Matrix".