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Oracle Solaris SAN Configuration and Multipathing Guide     Oracle Solaris 10 1/13 Information Library
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Document Information


1.  Solaris I/0 Multipathing Overview

2.  Configuring Solaris I/O Multipathing Features

3.  Configuring Fabric-Connected Devices

4.  Configuring Oracle Solaris iSCSI Initiators

Oracle Solaris iSCSI Technology (Overview)

Identifying Solaris iSCSI Software and Hardware Requirements

Oracle Solaris iSCSI Terminology

Recommended iSCSI Configuration Practices

Configuring Solaris iSCSI Initiators

Configuring Dynamic or Static Target Discovery

How to Configure an iSCSI Initiator and Target Discovery

How to Access iSCSI Disks

How to Access iSCSI Disks Upon Reboot

How to Remove Discovered iSCSI Targets

Configuring Authentication in Your iSCSI-Based Storage Network

How to Configure CHAP Authentication for Your iSCSI Initiator

How to Configure CHAP Authentication for Your iSCSI Target

Using a Third-Party RADIUS Server to Simplify CHAP Management in Your iSCSI Configuration

Oracle Solaris iSCSI and RADIUS Server Error Messages

Setting Up Solaris iSCSI Multipathed Devices

How to Enable Multiple iSCSI Sessions for a Target

Monitoring Your iSCSI Configuration

Modifying iSCSI Initiator and Target Parameters

How to Modify iSCSI Initiator and Target Parameters

Troubleshooting iSCSI Configuration Problems

No Connections to the iSCSI Target From the Local System

How to Troubleshoot iSCSI Connection Problems

iSCSI Device or Disk Is Not Available on the Local System

How to Troubleshoot iSCSI Device or Disk Unavailability

Use LUN Masking When Using the iSNS Discovery Method

General iSCSI Error Messages

5.  Configuring SAS Domains

6.  Configuring IPFC SAN Devices

7.  Booting the Oracle Solaris OS From Fibre Channel Devices on x86 Based Systems

8.  Persistent Binding for Tape Devices

A.  Manual Configuration for Fabric-Connected Devices

B.  Supported FC-HBA API

C.  Troubleshooting Multipathing-Related Problems


Oracle Solaris iSCSI Technology (Overview)

iSCSI is an acronym for Internet SCSI (Small Computer System Interface), an Internet Protocol (IP)-based storage networking standard for linking data storage subsystems.

By carrying SCSI commands over IP networks, the iSCSI protocol enables you to access block devices from across the network as if they were connected to the local system.

If you want to use storage devices in your existing TCP/IP network, the following solutions are available:

Here are the benefits of using iSCSI targets and initiators in Oracle Solaris:

Here are the current limitations or restrictions of using the Solaris iSCSI initiator software:

Identifying Solaris iSCSI Software and Hardware Requirements

Oracle Solaris iSCSI Terminology

Review the following terminology before configuring Oracle Solaris iSCSI initiators.

The process that presents the initiator with a list of available targets.
Discovery method
The way in which the iSCSI targets can be found. Three methods are currently available:
  • Internet Storage Name Service (iSNS) – Potential targets are discovered by interacting with one or more third-party iSNS servers.

  • SendTargets – Potential targets are discovered by using a discovery-address.

  • Static – Static target addressing is configured.

The driver that initiates SCSI requests to the iSCSI target.
Initiator group
A set of initiators. When an initiator group is associated with a LUN, only initiators from that group may access the LUN.
iqn or eui address format
An iqn (iSCSI qualified name) address is the unique identifier for a device in an iSCSI network using the form An iSCSI initiator or target is assigned an IQN name automatically when the iSCSI initiator or target is initialized.

An eui (extended unique identifier) address consists of 16 hexadecimal digits, and identifies a class of GUIDs that is used in both the SCSI and InfiniBand standards. SRP devices use the eui address format.

Logical unit
A uniquely numbered component in a storage system. When a is associated with one or more SCSI targets, the target can be accessed by one or more SCSI initiators.
Target device
The iSCSI storage component.
Target group
A set of targets. A can be made available to all targets in one target group.
Target portal group
A list of IP addresses that determines which interfaces a specific iSCSI target will listen to. A TPG contains IP addresses and TCP port numbers

Recommended iSCSI Configuration Practices

Review the following iSCSI recommendations before configuring iSCSI devices in your network.